CN113046604B - Preparation method of tube cavity type high-strength 6-series aluminum alloy - Google Patents

Abstract

A preparation method of a pipe cavity type high-strength 6-series aluminum alloy comprises magnesium, copper, chromium, iron, titanium and aluminum elements, wherein the mass percent of magnesium is 0.80-0.95; the silicon content is 0.55-0.65; the mass percent of copper is 0.25-0.3; the mass percentage of the chromium is 0.04-0.045; the mass percent of iron is less than or equal to 0.15; the mass percent of titanium is 0.10-0.20; the balance being aluminum. The invention can improve the strength of the tube cavity aluminum alloy by properly adding the contents of magnesium, silicon and copper, simultaneously strictly controls the contents of iron, chromium and magnesium, well welds in the extrusion process of extrusion forming, has smaller crystal grains at the welding seam, and obtains good welding line for the tube cavity aluminum alloy formed by extrusion forming. The aluminum alloy of the invention can achieve high strength and good welding line without homogenization treatment, thereby saving a large amount of cost. The tube cavity aluminum alloy adopts three-stage cooling after extrusion forming, so that grain refinement can be promoted, and the strength of the tube cavity aluminum alloy is improved through the characteristic of fine grain strengthening.

Description

Preparation method of tube cavity type high-strength 6-series aluminum alloy

Technical Field

The invention relates to the technical field related to preparation of tube cavity type aluminum alloy, in particular to a preparation method of tube cavity type high-strength 6 series aluminum alloy.

Background

With the rapid development of industrial lightweight, the aluminum alloy is widely applied due to the characteristics of the aluminum alloy, and is suitable for the design of automobile lightweight and the like; as an aluminum alloy with medium strength, 6-series alloy has wide application scenes in the automobile industry. The existing extrusion forming mode often has the phenomena of obvious welding line and lower strength. The peak value of the tensile strength of the tube cavity type aluminum alloy formed by the existing 6 series aluminum alloy is 280.20MPa, and the peak value of the yield strength is 277.13 MPa.

According to the traditional theory, in order to improve the strength of the 6 series aluminum alloy, silicon, magnesium and copper must be added, and a proper amount of chromium and magnesium must be added to refine grains. However, experiments show that when the alloy contains excessively high three-dimensional manganese, the manganese generates serious intragranular deflection in an alpha phase, the recrystallization of the alloy is influenced, particularly, the temperature of crystal grains in a contact part of a die and a mould in the die is higher due to friction, the crystal grains at a welding line grow excessively, and the welding line is obvious after the product is oxidized.

Disclosure of Invention

The invention provides a preparation method of a tube cavity type high-strength 6-series aluminum alloy, which aims to overcome the defects in the prior art. The aluminum alloy of the invention can achieve high strength and good welding line without homogenization treatment, thereby saving a large amount of cost. The tube cavity aluminum alloy adopts three-stage cooling after extrusion forming, so that grain refinement can be promoted, and the strength of the tube cavity aluminum alloy is improved through the characteristic of fine grain strengthening. Has strong practicability.

In order to achieve the purpose of the invention, the following technology is adopted:

a preparation method of a pipe cavity type high-strength 6 series aluminum alloy,

the aluminum alloy comprises magnesium, copper, chromium, iron, titanium and aluminum elements, wherein the mass percent of the magnesium is 0.80-0.95; the silicon content is 0.55-0.65; the mass percent of copper is 0.25-0.3; the mass percentage of the chromium is 0.04-0.045; the mass percent of iron is less than or equal to 0.15; the mass percent of titanium is 0.10-0.20; the balance being aluminum;

the preparation method comprises the following steps:

step 1: proportioning the components according to the component proportion of magnesium, silicon, copper, chromium, iron, titanium and aluminum elements in the aluminum alloy;

step 2: smelting the alloy, and slagging off in the smelting process;

and step 3: adding a refining agent to refine the alloy, wherein the refining temperature is 700-740 ℃, and slag is required to be removed in the refining process;

and 4, step 4: casting the alloy liquid obtained in the step (3) into an aluminum alloy bar;

and 5: extruding the bar obtained in the step (4) into a pipe cavity piece;

step 6: and (5) cooling the tubular member obtained in the step (5) by a three-stage cooling mode.

Further, the melting temperature is 700-.

Further, the refining temperature is 700-.

Further, nitrogen gas is used as the refining agent used in step 3.

Furthermore, the three-stage cooling mode is a mode of cooling by adopting a first-stage air cooling mode and a second-stage fog cooling mode in the extruder, and a three-stage water cooling mode is adopted outside the extruder.

Furthermore, a slag removing device is adopted during slag removing.

The technical scheme has the advantages that:

1. the invention can improve the strength of the tube cavity aluminum alloy by properly adding the contents of magnesium, silicon and copper, simultaneously strictly controls the contents of iron, chromium and magnesium, well welds in the extrusion process of extrusion forming, has smaller crystal grains at the welding seam, and obtains good welding line for the tube cavity aluminum alloy formed by extrusion forming.

2. The aluminum alloy of the invention can achieve high strength and good welding line without homogenization treatment, thereby saving a large amount of cost.

3. The tube cavity aluminum alloy adopts three-stage cooling after extrusion forming, so that grain refinement can be promoted, and the strength of the tube cavity aluminum alloy is improved through the characteristic of fine grain strengthening.

Drawings

FIG. 1 shows the microstructure morphology of a 6-series aluminum alloy.

Fig. 2 shows the microstructure morphology of the luminal 6 series aluminum alloy.

Fig. 3 shows a first three-dimensional structure of the slag removing device.

Fig. 4 shows a three-dimensional structure diagram II of the slag removing device.

Fig. 5 shows a three-dimensional structure diagram of the slag removing device.

Fig. 6 shows a fourth three-dimensional structure of the slag removing device.

Fig. 7 shows a fifth three-dimensional structure diagram of the slag removing device.

Fig. 8 shows an enlarged view at a.

Fig. 9 shows an enlarged view at B.

Fig. 10 shows an enlarged view at C.

Fig. 11 shows an enlarged view at D.

Fig. 12 shows an enlarged view at E. A

Fig. 13 shows an enlarged view at F.

Fig. 14 shows an enlarged view at G.

Fig. 15 shows an enlarged view at H.

Fig. 16 shows an enlarged view at I.

Fig. 17 shows an enlarged view at J.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.

Furthermore, the terms "substantially", and the like are intended to indicate that the relative terms are not necessarily strictly required, but may have some deviation. For example: "substantially equal" does not mean absolute equality, but because absolute equality is difficult to achieve in actual production and operation, certain deviations generally exist. Thus, in addition to absolute equality, "substantially equal" also includes the above-described case where there is some deviation. In this case, unless otherwise specified, terms such as "substantially", and the like are used in a similar manner to those described above.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

A preparation method of a pipe cavity type high-strength 6-series aluminum alloy comprises magnesium, copper, chromium, iron, titanium and aluminum elements, wherein the mass percent of magnesium is 0.80; the silicon content percentage was 0.55; the mass percent of copper is 0.25; the mass percent of chromium is 0.04; the mass percent of iron is 0.15; the mass percent of titanium is 0.10; the balance being aluminum.

The preparation method comprises the following steps:

step 1: proportioning the components according to the component proportion of magnesium, silicon, copper, chromium, iron, titanium and aluminum elements in the aluminum alloy;

step 2: smelting the alloy at the smelting temperature of 700-750 ℃, and slagging off by using a slagging-off device in the smelting process;

and step 3: introducing nitrogen to refine the alloy, wherein the refining temperature is 700-740 ℃, the refining time is 10 minutes, and a slagging-off device is adopted to carry out slagging-off in the refining process;

and 4, step 4: casting the alloy liquid obtained in the step (3) into an aluminum alloy bar;

and 5: extruding the bar obtained in the step (4) into a pipe cavity piece;

step 6: and (5) cooling the tubular member obtained in the step (5) by a three-stage cooling mode. The three-stage cooling mode is that the inside of the extruder is cooled by adopting a first-stage air cooling mode and a second-stage fog cooling mode, and the outside of the extruder is cooled by adopting a three-stage water cooling mode.

After the preparation of the tube cavity alloy is finished, the part of the tube cavity alloy is taken down from the tube cavity fitting in a wire cutting mode and the like, then the tensile strength, the yield strength and the welding line of the tube cavity alloy are detected, multiple times of detection are carried out in the detection process for improving the reliability of detection data, the detection data are averaged after the detection, the averaged tensile strength value is 298.16MPa and the yield strength is 280MPa, and when the welding line is observed, no obvious welding line appears.

Example 2

A preparation method of a tube cavity type high-strength 6-series aluminum alloy comprises the following steps of (1) preparing an aluminum alloy, wherein the aluminum alloy comprises magnesium, silicon, copper, chromium, iron, titanium and aluminum elements, and the mass percent of magnesium is 0.90; the silicon content percentage is 0.60; the mass percent of copper is 0.27; the mass percent of chromium is 0.042; the mass percent of iron is 0.15; the mass percent of titanium is 0.15; the balance being aluminum.

The preparation method comprises the following steps:

step 1: proportioning the components according to the component proportion of magnesium, copper, chromium, iron, titanium and aluminum elements in the aluminum alloy;

step 2: smelting the alloy at the smelting temperature of 700-750 ℃, and slagging off by using a slagging-off device in the smelting process;

and step 3: introducing nitrogen to refine the alloy, wherein the refining temperature is 700-740 ℃, the refining time is 10 minutes, and a slagging-off device is adopted to carry out slagging-off in the refining process;

and 4, step 4: casting the alloy liquid obtained in the step (3) into an aluminum alloy bar;

and 5: extruding the bar obtained in the step (4) into a pipe cavity piece;

step 6: and (5) cooling the tubular member obtained in the step (5) by a three-stage cooling mode. The three-stage cooling mode is that the inside of the extruder is cooled by adopting a first-stage air cooling mode and a second-stage fog cooling mode, and the outside of the extruder is cooled by adopting a three-stage water cooling mode.

After the preparation of the tube cavity alloy is finished, the part of the tube cavity alloy is taken down from the tube cavity part in a wire cutting mode and the like, then the tensile strength, the yield strength and the welding line of the tube cavity alloy are detected, in the detection, the detection data are detected for a plurality of times in order to improve the reliability of the detection data, the detection data are averaged after the detection, the averaged tensile strength value is 299.26MPa, the yield strength is 281.69MPa, and when the welding line is observed, no obvious welding line appears.

EXAMPLE 3

A preparation method of a tube cavity type high-strength 6-series aluminum alloy comprises the following steps of (1) preparing an aluminum alloy, wherein the aluminum alloy comprises magnesium, silicon, copper, chromium, iron, titanium and aluminum elements, and the mass percent of magnesium is 0.95; the silicon content percentage is 0.65; the mass percent of copper is 0.3; the mass percent of chromium is 0.045; the mass percent of iron is 0.15; the mass percent of titanium is 0.20; the balance being aluminum.

The preparation method comprises the following steps:

step 1: proportioning the components according to the component proportion of magnesium, copper, chromium, iron, titanium and aluminum elements in the aluminum alloy;

step 2: smelting the alloy at the smelting temperature of 700-750 ℃, and slagging off by using a slagging-off device in the smelting process;

and step 3: introducing nitrogen to refine the alloy, wherein the refining temperature is 700-740 ℃, the refining time is 10 minutes, and a slagging-off device is adopted to carry out slagging-off in the refining process;

and 4, step 4: casting the alloy liquid obtained in the step (3) into an aluminum alloy bar;

and 5: extruding the bar obtained in the step (4) into a pipe cavity piece;

step 6: and (5) cooling the tubular member obtained in the step (5) by a three-stage cooling mode. The three-stage cooling mode is that the inside of the extruder is cooled by adopting a first-stage air cooling mode and a second-stage fog cooling mode, and the outside of the extruder is cooled by adopting a three-stage water cooling mode.

After the preparation of the tube cavity alloy is finished, the part of the tube cavity alloy is taken down from the tube cavity piece in a wire cutting mode and the like, then the tensile strength, the yield strength and the welding line of the tube cavity alloy are detected, multiple times of detection are carried out in the detection process for improving the reliability of detection data, the detection data are averaged after the detection, the averaged tensile strength value is 300.47MPa, the yield strength is 283.98MPa, and obvious welding seams are not found when the welding seams are observed.

In conclusion, the strength of the prepared aluminum alloy is obviously improved, and the content of each element in the content range does not have great influence on the strength of the alloy. In order to delay the natural aging time of the alloy and enable the weld line of the pipe cavity piece to be excellent, the content of chromium is strictly controlled within the range of 0.04-0.045%, after the chromium is added into the alloy, the chromium not only forms Al7Cr with aluminum, but also forms (CrFe) Al7, (CrMn) Al2 and other alloy compounds with other elements, and the chromium compounds are colored, so that the chromium compounds at the weld line are easy to generate color difference with other crystals after being oxidized, and the weld line is obvious. The magnesium, silicon, copper, chromium, iron and titanium elements added into the alloy have the following functions in the aluminum alloy: the eutectic point of the aluminum and the silicon is 11.7 percent, the solidification temperature range of the eutectic alloy is minimum, feeding and thermal cracking resistance are good, the alloy near the eutectic point has good fluidity, and the aluminum-silicon eutectic alloy is suitable for extrusion forming structural parts. With the increase of the silicon content, the strength and hardness of the aluminum alloy are improved, but the deformability is reduced. The content of silicon in the alloy is required to be controlled within 0.55-0.65% seriously in order to improve the strength of the alloy and facilitate the forming of a pipe cavity part, and according to experimental data, when the content of the silicon is 0.55-0.65%, the tensile strength of the alloy has excellent performance and certain deformability, and when the content of the silicon is more than the range, the alloy is not easy to deform in the extrusion forming process. When the copper content is strictly controlled to 0.25 to 0.3%, the aluminum alloy is found to have improved machinability and an increased tendency to hot crack. While the magnesium content is strictly controlled to 0.80 to 0.95%, the strength of the alloy is significantly improved and the corrosion resistance is significantly improved in this range, and when the magnesium content exceeds this range, the alloy is likely to crack during extrusion molding, and at the same time, the cold brittleness is reduced, and the alloy is difficult to be molded during extrusion molding, and the impact toughness of the entire alloy is also significantly reduced. Iron can significantly relieve the affinity between the aluminum alloy and the die in the extrusion molding of the aluminum alloy, and in the actual production, it is found that when the content of iron is too high, a FeAl3 needle-like phase is generated in the casting, the existence of the phase reduces the performance of the alloy, and when the content of iron is increased, the iron forms intermetallic compounds, thereby causing the surface roughness of the alloy to be increased, the deformability to be reduced, and the cutting ability to be reduced, so that the content of iron is required to be not more than 0.15%. After the titanium is added into the alloy, the grain size of the alloy is obviously reduced, and the strength of the alloy is improved. As shown in fig. 1 and 2, the microstructure morphology of the conventional 6-series alloy and the microstructure morphology of the aluminum alloy are shown, and it is not difficult to find that the crystal grains of the alloy are significantly refined, while the crystal grains of the conventional 6-series alloy are coarse. Meanwhile, in order to improve the strength of the extruded pipe cavity and refine the crystal grains of the extruded pipe cavity, a three-stage cooling mode is adopted, a large amount of heat of the pipe cavity is rapidly taken away in an air cooling mode in the instant of the extruded and molded discharging of the extruded and molded pipe cavity, the heat dissipation efficiency of the pipe cavity is accelerated, when the air-cooled pipe cavity passes through two-stage fog cooling, a large amount of heat is taken away by water vapor which is dispersed and distributed, then three-stage water cooling is carried out on the pipe cavity, further coarsening and growing of the crystal grains are prevented through the one-stage and two-stage rapid cooling, meanwhile, in the rapid cooling process, the heat of the pipe cavity is rapidly consumed, further power for further growing of the crystal grains is lost, the purpose of refining the crystal grains is achieved, and in order to avoid influence on the environment during alloy refining, nitrogen is adopted as a refining agent. Through the accurate control of the content of each element, the obtained aluminum alloy microstructure morphology display crystal grains are further refined, the strength of the aluminum alloy is obviously improved, and the formed tube cavity aluminum alloy does not generate obvious welding seams. The content of each element of the aluminum alloy needs to be accurately controlled during batching, and each element of the aluminum alloy is based on the basic principle of material smelting and strength test of aluminum alloy pipe cavity pieces with different components. And the percentage of the content of each element is two digits after the decimal point, so that the content of each element is difficult to obtain directly through repeated experiments. Even if the aluminum alloy is obtained by increasing or decreasing the content of a certain element according to the original composition ratio of the 6-series alloy, it is difficult to obtain it by repeating a large number of experiments when the content of each element needs to be accurately controlled.

As shown in fig. 2-17, the structure of the slag removing device is shown, the slag removing device is mainly used for conveniently removing slag during the smelting and refining of the aluminum alloy, the slag removing device can automatically remove slag, the slag removing efficiency is improved, the working strength of operators is reduced, and meanwhile, the operators are prevented from working in a high-temperature environment for a long time. This take off sediment device includes: the slag removing device comprises an adjusting assembly 1, a slag collecting assembly 2, a lifting assembly 3, a telescopic assembly 4, a tension and contraction assembly 5, a rotating assembly 6 and a slag removing assembly 7. The slag collecting component 2 is arranged on the adjusting component 1; the lifting assemblies 3 are paired and are arranged on the adjusting assembly 1; the telescopic assemblies 4 are paired and are arranged on the lifting assembly 3; the pair of the folding and unfolding components 5 are arranged on the telescopic component 4; the rotating assemblies 6 are provided with a pair of rotating assemblies and are arranged on the folding and unfolding assemblies 5; the slag raking assemblies 7 are paired and are arranged on the rotating assembly 6; adjusting part 1 is used for the regulation of collection sediment subassembly 2 and 3 overall height of lifting unit, and collection sediment subassembly 2 is used for the collection of waste residue to store and topple over, and lifting unit 3 is used for adjusting the height of telescopic component 4, and telescopic component 4 is used for adjusting the 5 intervals apart from adjusting part 1 of receipts subassembly, receives a subassembly 5 and is used for adjusting the interval between the subassembly 7 of taking off the sediment, and rotating assembly 6 is used for adjusting the angle of taking off sediment subassembly 7.

The adjusting assembly 1 comprises a supporting member 10, a guide member 11 is arranged at the upper end of the supporting member 10, and a pair of adjusting members 12 is arranged on two sides of the supporting member 10. The support member 10 includes a base plate 100, four support columns 101 are provided at four corners of the base plate 100 in an upwardly extending manner, and an upper plate 102 is provided at an upper end of each support column 101. The guide member 11 includes an adjustment floor 117 located directly above the upper plate 102. The adjusting member 12 is used for adjusting the height of the bottom plate 117, and the guide member 11 is used for adjusting the guide when the height of the bottom plate 117 is adjusted. The guide member 11 includes a pair of first mounting plates 110 mounted on the upper plate 102, each first mounting plate 110 is provided with an upward extending column 111 extending upward, the inner walls of the upward extending columns 111 are provided with trapezoidal guide strips 112, each trapezoidal guide strip 112 is provided with a pair of guide wheels 113 in a matching manner, each guide wheel 113 is provided with an assembly seat 114, the inner side end of each pair of assembly seats 114 is provided with a middle block 115, two sides of the middle block 115 are provided with outward extending support plates 116 extending outward, the adjusting base plate 117 is mounted on the middle block 115, and the outward extending support plates 116 are mounted on the lower side of the adjusting base plate 117. The adjusting member 12 comprises a second mounting plate 120 mounted on the lower bottom of the upper plate 102, an adjusting guide sleeve 121 is mounted at the outer side end of the second mounting plate 120, guide strips 122 are arranged on two sides of the inside of the adjusting guide sleeve 121, a pair of adjusting side plates 123 penetrate through the adjusting guide sleeve 121, limiting grooves 124 are formed on the side walls of the adjusting side plates 123, the guide strips 122 penetrate through the limiting grooves 124, arc-shaped strips 125 are formed on the outer walls of the adjusting side plates 123, adjusting racks 126 are mounted between the adjusting side plates 123, adjusting gears 127 are meshed with the adjusting racks 126, adjusting bearing seats 128 are arranged at two ends of each adjusting gear 127, the adjusting gears 127 are connected with adjusting motors 129, the adjusting motors 129 are mounted on the adjusting bearing seats 128, and the adjusting side plates 123 are mounted on the overhanging support plates 116.

The slag collecting assembly 2 comprises a pair of first hinged seats 20 mounted on the adjusting bottom plate 117, the first hinged seats 20 are hinged to first rotating seats 21, oil cylinders 22 are mounted on the first rotating seats 21, second rotating seats 23 are mounted at the movable ends of the oil cylinders 22, rotating convex plates 24 are hinged to the second rotating seats 23, hinged plates 25 are mounted at the lower ends of the rotating convex plates 24, second hinged seats 27 are hinged to the roots of the hinged plates 25, concave fixing plates 26 are mounted on the second hinged seats 27, the concave fixing plates 26 are mounted at one ends of the adjusting bottom plate 117, slag collecting inner plates 28 are mounted at the other ends of the hinged plates 25, slag collecting bottom plates 280 are arranged at the lower ends of the slag collecting inner plates 28 in an extending mode, and slag collecting side plates 29 are mounted on two sides of the slag collecting bottom plates 280.

The lifting component 3 comprises a third mounting plate 30 mounted on the adjusting bottom plate 117, the third mounting plate 30 is provided with a I-shaped supporting member 31 extending upwards, the upper end of the I-shaped supporting member 31 is provided with a lifting top plate 32, both sides of the lifting top plate 32 are provided with a pair of outer convex plates 320, the outer convex plates 320 are provided with supporting round rods 33 extending downwards, the lower ends of the supporting round rods 33 are fixed on the third mounting plate 30, the upper end and the lower end of one side of the I-shaped supporting member 31 are provided with a pair of lifting bearing seats 34, the lifting bearing seat 34 positioned at the upper end is provided with a lifting motor 35, the output shaft of the lifting motor 35 is connected with a lifting screw rod 36, the lifting screw rod 36 is screwed with a lifting seat 37, both sides of the lifting seat 37 are provided with guiding lugs 370, the guiding lugs 370 are respectively penetrated through one pair of the supporting round rods 33, the lifting seat 37 is provided with an inner penetrating plate 371 extending inwards, the inner penetrating plate 371 penetrates through the I-shaped supporting member 31, the other end of the inner penetrating plate is provided with a limiting plate 372, the other end of limiting plate 372 installs T shaped plate 373, and the support round bar 33 is all worn in the both ends of T shaped plate 373, and connecting plate 38 is installed to T shaped plate 373 outwards extending, and the other end of connecting plate 38 is equipped with lift fixed concave part 39.

Telescopic assembly 4 is including installing in the lifter plate 40 of the fixed concave part 39 that goes up and down, the both sides of lifter plate 40 all are equipped with lift curb plate 400, flexible guide pin bushing 41 is all installed to lift curb plate 400, the both sides of flexible guide pin bushing 41 are all equipped with pterygoid lamina 410 outwards with extending, both sides all take shape in the flexible guide pin bushing 41 have the interior guide block 411, telescopic part 42 has all been worn in the flexible guide pin bushing 41, draw-in groove 420 has all been formed to the upper and lower both sides of telescopic part 42, interior guide block 411 all wears in draw-in groove 420, telescopic part 42's outer wall all is equipped with telescopic rack 43, telescopic rack 43 all meshes telescopic gear 44, every telescopic gear 44's both ends all are equipped with telescopic bearing seat 45 a pair ofly, telescopic gear 44 all is connected with telescopic motor 46, telescopic motor 46 all installs in telescopic bearing seat 45, telescopic part 42's outside end all is equipped with fourth mounting panel 47.

The folding and unfolding assembly 5 comprises a folding and unfolding back plate 50 installed on the fourth installation plate 47, a pair of folding and unfolding bearing seats 52 are installed at two ends of the outer wall of the folding and unfolding back plate 50, a pair of guide rails 51 are installed on the outer wall of the folding and unfolding back plate 50, a folding and unfolding motor 53 is installed on one of the folding and unfolding bearing seats 52, an output shaft of the folding and unfolding motor 53 is connected with a folding and unfolding screw rod 54, the folding and unfolding screw rod 54 is screwed with a folding and unfolding seat 55, a pair of outer support plates 56 are arranged on the upper side and the lower side of the folding and unfolding seat 55 in an outwards extending mode, guide seats 57 are installed on the outer support plates 56, the guide rails 51 are sleeved with the guide seats 57, outer support plates 56 are provided with outer extending columns 58 in an outwards extending mode, and fifth installation plates 59 are installed at the outer ends of the outer extending columns 58.

The rotating assembly 6 comprises an extending arm 60 installed on the fifth installation plate 59, gusset plates 600 are arranged on four walls at the root of the extending arm 60, a rotating table 601 is installed at the other end of the extending arm 60, an extending table 602 is arranged on the rotating table 601 in an upward extending mode, a driven rod 61 penetrates through the extending table 602, a driven wheel 62 is arranged at the upper end of the driven rod 61, a plurality of inward concave grooves 620 are formed in the outer wall of the driven wheel 62, connecting belts 63 are arranged on the inward concave grooves 620, driving wheels 64 are arranged at the other end of the connecting belts 63, a plurality of arc grooves 640 are formed in the outer wall of the driving wheels 64, the connecting belts 63 are arranged in the arc grooves 640, the driving wheels 64 are connected with a rotating motor 65, the rotating motor 65 is installed on the fifth installation plate 59, a rotating disc 66 is arranged at the lower end of the driven rod 61, and the rotating disc 66 is located at the lower end of the rotating table 601.

The slag raking component 7 comprises a rotating rod 70 arranged on a rotating disc 66, a long lath 71 is arranged at the lower end of the rotating rod 70, a pair of end seats 72 are arranged at both ends of the long lath 71 in a downward extending manner, an upper extending seat 73 is hinged with each end seat 72, a bottom lath 74 is arranged at the lower end of the upper extending seat 73, a rear plate 75 is arranged at the bottom lath 74 in a downward extending manner, a slag raking plate 751 is arranged at the lower end of the rear plate 75 in an outward vertical extending manner, a plurality of through holes are formed in the slag raking plate 751, slag raking teeth 750 are formed at the other end of the slag raking plate 751, the slag raking teeth 750 extend downwards, the end parts of the slag raking teeth 750 are of blade-shaped structures, slag raking guard plates 752 are arranged at both sides of the slag raking plate 751, a pair of outward extending plates 79 are arranged at both ends of the bottom lath 74 in an outward extending manner, a limiting groove 790 is formed at both upper sides of the outward extending manner, a pair of an upper extending fixing plates 76 is arranged at both ends of the upper extending manner, an outward protruding seat 760 is arranged at both ends of the upper extending manner, outer convex base 760 has all worn telescopic link 77, and the upper end of telescopic link 77 is equipped with end disc 770, and spring 78 has all been worn to telescopic link 77, and spring 78 is located the lower extreme of outer convex base 760, and the lower extreme of telescopic link 77 all is equipped with and pushes away dish 771, and spring 78 all is located the top of pushing away dish 771, pushes away dish 771 and all is equipped with the effect awl 772 with downwardly extending, and the lower extreme of effect awl 772 all is located spacing groove 790.

The device carries out slag raking treatment on alloy liquid in a smelting furnace by virtue of an adjusting component 1, a slag collecting component 2, a lifting component 3, a telescopic component 4, a tension component 5, a rotating component 6 and a slag raking component 7 according to the problems in the prior art, wherein the adjusting component 1 can adjust the heights of the slag collecting component 2 and the lifting component 3, the slag collecting component 2 is convenient for accommodating raked slag and pouring out slag, the lifting component 3 can adjust the height of the telescopic component 4, the telescopic component 4 can adjust the position of the tension component 5 away from the adjusting component 1, the slag raking component 7 is driven to reciprocate back and forth during slag raking, the slag raking treatment is carried out by the slag raking component 7, the distance between the slag raking components 7 can be adjusted by the tension component 5, slag raking treatment can be conveniently carried out on each position in the smelting furnace by the adjustment, the rotating component 6 can drive the slag raking component 7, thereby adjusting the angle of the slag-off component 7 and facilitating the slag-off component 7 to carry out slag-off treatment on each position in the smelting furnace.

When the smelting furnace needs slag skimming, firstly, the slag skimming device is pushed to the mouth of the smelting furnace along a preset rail, then the heights of the slag collecting component 2 and the lifting component 3 are adjusted through the adjusting component 1, so that the slag collecting inner plate 28 in the slag collecting component 2 is opposite to the mouth of the smelting furnace, after the adjustment is finished, the height of the slag skimming component 7 is adjusted through the lifting component 3, so that the slag skimming component 7 can enter the smelting furnace through the mouth of the smelting furnace, after the adjustment is finished, the telescopic component 4 is started, so that the slag skimming component 7 moves towards the inside of the smelting furnace, when the slag skimming component 7 moves towards the inside of the smelting furnace, the spacing between the slag skimming components 7 is adjusted through the tension component 5 until the slag skimming component 7 can enter the smelting furnace, when the slag skimming component 7 moves into the smelting furnace, the angle of the slag skimming component 7 is continuously adjusted through the rotating component 6, and the positions of the slag skimming component 7 are continuously adjusted through the tension component 5 and the telescopic component 4, until the slag in the melting furnace is transferred to the mouth of the melting furnace by the slag raking component 7, then the slag raking component 7 is positioned on the same straight line through the rotating component 6, meanwhile, the distance between the slag raking components 7 is reduced by the tension and contraction component 5, after the completion, the slag is taken out of the melting furnace and transferred to the slag collecting component 2 through the telescopic component 4, and the process is repeated until the melting or refining is completed, and during the period, when the slag in the slag collecting component 2 is too much, the slag can be poured into a preset receiving hopper.

When the adjusting assembly 1 adjusts the height of the slag collecting assembly 2, the adjusting motor 129 is started, the adjusting gear 127 is driven by the adjusting motor 129 to rotate, the rotation of the adjusting gear 127 drives the adjusting rack 126 to move, when the adjusting rack 126 moves up and down, the adjusting side plate 123 penetrating through the adjusting guide sleeve 121 plays a role in guiding and limiting the movement of the adjusting rack 126, meanwhile, the connection relation between the adjusting rack 126 and the adjusting side plate 123 is strengthened, meanwhile, in order to strengthen the connection relation, the guide strip 122 is arranged in the adjusting guide sleeve 121, the guide strip 122 penetrates through the limiting groove 124, meanwhile, the outer side of the adjusting side plate 123 can be limited, so that the arc-shaped strip 125 is formed on the outer side of the adjusting side plate 123, when the adjusting rack 126 moves up, the adjusting rack 126 drives the support plate 116 to move up and down, and the support plate 116 extends outwards when moving up, the guide wheels 113 arranged on two sides of the middle block 115 and the trapezoidal guide strip 112 are matched with each other The lifting movement of the adjusting bottom plate 117 is guided, and the middle block 115 supports the lower end of the adjusting bottom plate 117.

When the slag collecting assembly 2 is used for dumping slag, the oil cylinder 22 is started, the convex plate 24 is rotated under the action of the oil cylinder 22 to rotate, the hinged plate 25 is driven to rotate by the rotation of the convex plate 24, the slag collecting bottom plate 280 is driven to rotate around the second hinged base 27 by the rotation of the hinged plate 25, waste slag contained in the slag collecting bottom plate 280 is poured out when the slag collecting bottom plate 280 rotates, the slag collecting side plates 29 arranged on two sides of the slag collecting bottom plate 280 can be used for placing the waste slag to drop, and the fixing effect of the slag collecting assembly 2 and the adjusting bottom plate 117 can be improved by the concave fixing plate 26 arranged on the adjusting bottom plate 117.

When the height of the telescopic assembly 4 is adjusted by the lifting assembly 3, the lifting motor 35 is started, the lifting screw 36 is driven by the lifting motor 35 to rotate, the lifting seat 37 is driven by the rotation of the lifting screw 36 to move along the axial direction of the supporting round rod 33, and the lifting seat 37 drives the lifting plate 40 to move up and down when moving.

When the telescopic assembly 4 adjusts the position of the tension assembly 5, the telescopic motor 46 is started, the telescopic gear 44 is driven by the telescopic motor 46 to rotate, the telescopic gear 44 rotates to drive the telescopic rack 43 to move, and the telescopic part 42 and the telescopic guide sleeve 41 play a role in guiding and limiting the movement of the telescopic rack 43.

Wherein receive when opening subassembly 4 is adjusted the interval between the slagging-off subassembly 7, start and receive a motor 53, receive under the drive of receiving a motor 53 and open lead screw 54 and rotate, and receive the rotation of opening lead screw 54 and will drive the motion of receiving a seat 55, and receive a seat 55 when moving, set up in its both sides and overlap the guide holder 57 that establishes at guide rail 51 and play the effect of direction to the motion of receiving a seat 55, wherein in order to avoid receiving an motor 53 to cause the influence to its performance under high temperature environment, consequently install circulative cooling system in the outside of receiving an motor 53, take away the heat that produces when receiving an motor 53 and rotate through circulative cooling system, can also avoid external temperature to cause the influence to the operation of receiving an motor 53 simultaneously.

When the rotating assembly 6 adjusts the angle of the slag removing assembly 7, the rotating motor 65 is started, the connecting belt 63 is driven by the rotating motor 65 to rotate, the connecting belt 63 drives the driven wheel 62 to rotate, the driven wheel 62 rotates to drive the driven rod 61 to rotate, and the driven rod 61 rotates to drive the slag removing assembly 7 to rotate. In order to avoid the influence of high temperature environment on the rotation of the rotating motor 65, a cooling system is also arranged outside the rotating motor 65, wherein in order to avoid the influence of high temperature on the transmission of the connecting belt 63, the connecting belt 63 is made of steel cables or steel belts. When the angle of the slag removing component 7 is adjusted, firstly, the furnace chamber of the smelting furnace is assumed to be of a rectangular structure, when slag in the length direction needs to be removed, the length direction of the slag removing component 7 is parallel to the width direction of the furnace chamber, and after the slag in the direction is transferred to the middle part of the alloy liquid, the rotating component 6 adjusts the angle of the slag removing component 7, so that the length direction of the slag removing component 7 is parallel to the length direction of the furnace chamber, the slag removing component 7 is driven by the telescopic component 4 to transfer the slag in the middle of the furnace chamber into the slag removing component 7, and finally the slag is transferred to the slag collecting bottom plate 280.

When the slag skimming assembly 7 skips slag, the action cone 772 moves downwards under the action of the spring 78, the action cone 772 acts on the extension plate 79, the extension plate 79 is pressed downwards, so that the extension plate 79 rotates downwards around the axial direction of the upper extension seat 73, the extension plate 79 rotates to drive the skimming plate 751 to rotate, the other end of the skimming plate 751 is turned upwards, the slag skimming processing is convenient when the other end of the skimming plate 751 is turned upwards, the skimming teeth 750 can penetrate into molten alloy, so that slag is transferred onto the skimming plate 751, meanwhile, in order to avoid the influence on the performance of the skimming teeth 750 in a high-temperature environment, the high-temperature-resistant material is selected to prepare the skimming teeth 750, when the slag skimming plate 751 is required to be turned out, the end of the slag collecting bottom plate 280 acts on the skimming teeth 750, so that the skimming bottom plate 280 rotates downwards and pours out the slag from the slag bottom plate 280, the extension plate 29 is rotated upward during the rotation, and the spring 78 is compressed by the rotation of the extension plate 29 until the slag is poured out, wherein a through hole is arranged on the slag skimming plate 751 to avoid the residual of the molten alloy on the slag skimming plate 751.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A preparation method of a tube cavity type high-strength 6-series aluminum alloy is characterized by comprising the following steps of:

the aluminum alloy comprises magnesium, silicon, copper, chromium, iron, titanium and aluminum elements, wherein the mass percent of the magnesium is 0.80-0.95%; the silicon content is 0.55-0.65%; the mass percent of copper is 0.25-0.3%; the mass percent of the chromium is 0.04% -0.045%; the mass percent of iron is less than or equal to 0.15 percent; the titanium accounts for 0.10 to 0.20 percent by mass; the balance being aluminum;

the preparation method comprises the following steps:

step 1: proportioning the components according to the component proportion of magnesium, silicon, copper, chromium, iron, titanium and aluminum elements in the aluminum alloy;

step 2: smelting the alloy, and slagging off in the smelting process;

and step 3: adding a refining agent to refine the alloy, wherein slag is required to be removed in the refining process;

and 4, step 4: casting the alloy liquid obtained in the step (3) into an aluminum alloy bar;

and 5: extruding the bar obtained in the step (4) into a pipe cavity piece;

step 6: cooling the pipe fitting obtained in the step 5 in a three-stage cooling mode;

a slag removing device is adopted during slag removing in the step 2 or the step 3;

the slagging-off device comprises: the slag collecting device comprises an adjusting component (1), a slag collecting component (2), a slag collecting inner plate (28), a lifting component (3), a telescopic component (4), a tension component (5), a rotating component (6) and a slag raking component (7);

when the smelting furnace needs slag skimming, firstly pushing the slag skimming device to the mouth of the smelting furnace along a preset rail, then adjusting the heights of the slag collecting component (2) and the lifting component (3) through the adjusting component (1) to enable the slag collecting inner plate (28) in the slag collecting component (2) to be opposite to the mouth of the smelting furnace, after the adjustment is completed, adjusting the height of the slag skimming component (7) through the lifting component (3) to enable the slag skimming component (7) to enter the smelting furnace through the mouth of the smelting furnace, after the adjustment is completed, starting the telescopic component (4) to enable the slag skimming component (7) to move towards the inside of the smelting furnace, when the slag skimming component (7) moves towards the inside of the smelting furnace, adjusting the distance between the slag skimming components (7) through the tension component (5) until the slag skimming component (7) can enter the smelting furnace, when the slag skimming component (7) moves into the smelting furnace, beginning of slag skimming operation, and in the slag skimming process, the angle of the slag raking component (7) is adjusted by the rotating component (6), the position of the slag raking component (7) is adjusted by the contracting and expanding component (5) and the telescopic component (4) until the slag raking component (7) transfers slag in the melting furnace to the melting furnace opening, then the slag raking component (7) is located on the same straight line through the rotating component (6), meanwhile, the distance between the slag raking components (7) is reduced by the contracting and expanding component (5), the slag is taken out of the melting furnace and transferred to the slag collecting component (2) through the telescopic component (4) after the slag raking component (7) is completed, and therefore the slag raking component reciprocates until the melting or refining is completed, and can be poured into a preset receiving hopper when too much slag in the slag collecting component (2) exists in the period.

2. The method for preparing the tubular cavity type high-strength 6-series aluminum alloy as claimed in claim 1, wherein the melting temperature is 700-750 ℃.

3. The method for preparing the luminal high-strength 6-series aluminum alloy as claimed in claim 1, wherein the refining temperature is 700-740 ℃ and the refining time is 10 minutes.

4. The method for preparing the tubular high-strength 6-series aluminum alloy according to claim 1, wherein the refining agent used in the step 3 is nitrogen gas.

5. The method for preparing a tubular high-strength 6-series aluminum alloy according to claim 1, wherein the three-stage cooling is performed by primary air cooling and secondary mist cooling inside the extruder, and by three-stage water cooling outside the extruder.

6. The method for preparing the luminal high-strength 6-series aluminum alloy according to claim 1, wherein the adjusting assembly (1) comprises a supporting member (10), a guide member (11) is arranged at the upper end of the supporting member (10), and a pair of adjusting members (12) are arranged on both sides of the supporting member (10);

the supporting member (10) comprises a bottom plate (100), four supporting columns (101) are arranged at four corners of the bottom plate (100) in an upward extending mode, and an upper plate (102) is arranged at the upper ends of the supporting columns (101);

the guide member (11) includes an adjustment bottom plate (117) located directly above the upper plate (102);

the adjusting component (12) is used for adjusting the height of the bottom plate (117), and the guiding component (11) is used for adjusting the guiding of the bottom plate (117) during height adjustment;

the guide members (11) comprise a pair of first mounting plates (110) mounted on the upper plate (102), the first mounting plates (110) are provided with upward extending columns (111) in an upward extending mode, trapezoidal guide strips (112) are mounted on the inner walls of the upward extending columns (111), each trapezoidal guide strip (112) is matched with a pair of guide wheels (113), each guide wheel (113) is provided with an assembly seat (114), a middle block (115) is mounted at the inner side end of each pair of assembly seats (114), two sides of each middle block (115) are provided with outward extending support plates (116) in an outward extending mode, the adjusting bottom plate (117) is mounted on the middle block (115), and the outward extending support plates (116) are mounted on the lower side of the adjusting bottom plate (117);

adjusting member (12) is including installing second mounting panel (120) in upper plate (102) bottom, adjusting uide bushing (121) is installed to the outside end of second mounting panel (120), the inside both sides of adjusting uide bushing (121) all are equipped with conducting bar (122), it is a pair of to have worn in adjusting uide bushing (121) and adjust curb plate (123), the lateral wall of adjusting curb plate (123) all forms spacing recess (124), conducting bar (122) all wears in spacing recess (124), the outer wall of adjusting curb plate (123) all forms arc strip (125), install adjusting rack (126) between adjusting curb plate (123), adjusting rack (126) meshing has adjusting gear (127), adjusting gear (127) both ends all are equipped with adjusting bearing frame (128), adjusting gear (127) are connected with adjusting motor (129), adjusting motor (129) are installed in adjusting bearing frame (128), adjusting curb plate (123) all install in overhanging supporting board (116).

7. The preparation method of the pipe cavity type high-strength 6-series aluminum alloy according to claim 6, wherein the slag collecting assembly (2) comprises a pair of first hinge seats (20) arranged on the adjusting bottom plate (117), the first hinge seats (20) are hinged with first rotating seats (21), oil cylinders (22) are arranged on the first rotating seats (21), second rotating seats (23) are arranged at the movable ends of the oil cylinders (22), rotating convex plates (24) are hinged with the second rotating seats (23), hinged plates (25) are arranged at the lower ends of the rotating convex plates (24), second hinge seats (27) are hinged at the root parts of the hinged plates (25), concave fixing plates (26) are arranged on the second hinge seats (27), the concave fixing plates (26) are arranged at one end of the adjusting bottom plate (117), slag collecting inner plates (28) are arranged at the other ends of the hinged plates (25), and slag collecting bottom plates (280) are arranged at the lower ends of the slag collecting inner plates (28) in an extending mode, slag collecting side plates (29) are arranged on both sides of the slag collecting bottom plate (280).

8. The preparation method of the tubular high-strength 6-series aluminum alloy according to claim 7, wherein the lifting assembly (3) comprises a third mounting plate (30) mounted on the adjusting bottom plate (117), the third mounting plate (30) is provided with an I-shaped supporting member (31) extending upwards, the upper end of the I-shaped supporting member (31) is provided with a lifting top plate (32), two sides of the lifting top plate (32) are provided with a pair of convex plates (320), the convex plates (320) are provided with supporting round rods (33) extending downwards, the lower ends of the supporting round rods (33) are fixed on the third mounting plate (30), the upper end and the lower end of one side of the I-shaped supporting member (31) are provided with a pair of lifting bearing seats (34), the lifting bearing seats (34) at the upper end are provided with lifting motors (35), the output shafts of the lifting motors (35) are connected with lifting lead screws (36), the lifting lead screws (36) are screwed with lifting seats (37), the both sides of lift seat (37) all are equipped with direction lug (370), direction lug (370) all wear in one of them a pair of support round bar (33), lift seat (37) are equipped with interior board (371) of wearing inwards extending, interior board (371) of wearing wears in worker shape support piece (31), the other end of interior board (371) of wearing is equipped with limiting plate (372), T shaped plate (373) are installed to the other end of limiting plate (372), the both ends of T shaped plate (373) are all worn in supporting round bar (33), connecting plate (38) are installed to outside extending in T shaped plate (373), the other end of connecting plate (38) is equipped with fixed concave part (39) of going up and down.

9. The preparation method of the pipe cavity type high-strength 6-series aluminum alloy according to claim 8, wherein the telescopic assembly (4) comprises a lifting plate (40) arranged on a lifting fixing concave part (39), lifting side plates (400) are arranged on two sides of the lifting plate (40), telescopic guide sleeves (41) are arranged on the lifting side plates (400), wing plates (410) are arranged on two sides of each telescopic guide sleeve (41) in a mode of extending outwards, inner extension guide blocks (411) are formed on two inner sides of each telescopic guide sleeve (41), telescopic parts (42) penetrate through the telescopic guide sleeves (41), clamping grooves (420) are formed on the upper side and the lower side of each telescopic part (42), the inner extension guide blocks (411) penetrate through the clamping grooves (420), telescopic racks (43) are arranged on the outer walls of the telescopic parts (42), telescopic gears (44) are meshed with the telescopic racks (43), a pair of telescopic bearing seats (45) are arranged at two ends of each telescopic gear (44), the telescopic gears (44) are connected with telescopic motors (46), the telescopic motors (46) are mounted on telescopic bearing seats (45), and the outer side ends of the telescopic pieces (42) are provided with fourth mounting plates (47).

10. The method for preparing the tubular high-strength 6-series aluminum alloy according to claim 9, wherein the tension and contraction assembly (5) comprises a tension and contraction back plate (50) arranged on the fourth mounting plate (47), a pair of tension and contraction bearing seats (52) are arranged at two ends of the outer wall of the tension and contraction back plate (50), a pair of guide rails (51) are arranged on the outer wall of the tension and contraction back plate (50), one of the folding and unfolding bearing seats (52) is provided with a folding and unfolding motor (53), an output shaft of the folding and unfolding motor (53) is connected with a folding and unfolding screw rod (54), the folding and unfolding screw rod (54) is screwed with a folding and unfolding seat (55), the upper side and the lower side of the folding and unfolding seat (55) are respectively provided with a pair of outer supporting plates (56) in an outwards extending mode, the outer supporting plates (56) are respectively provided with a guide seat (57), the guide seats (57) are respectively sleeved on the guide rail (51), the outer supporting plates (56) are respectively provided with an outer extending column (58) in an outwards extending mode, and the outer side end of each outer extending column (58) is provided with a fifth mounting plate (59);

the rotating assembly (6) comprises an extending arm (60) arranged on a fifth mounting plate (59), gusset plates (600) are arranged on four walls of the root of the extending arm (60), a rotating table (601) is arranged at the other end of the extending arm (60), an extending table (602) is arranged on the rotating table (601) in an upward extending mode, a driven rod (61) penetrates through the extending table (602), a driven wheel (62) is arranged at the upper end of the driven rod (61), a plurality of inner sunken grooves (620) are formed in the outer wall of the driven wheel (62), connecting belts (63) are arranged in the inner sunken grooves (620), driving wheels (64) are arranged at the other end of the connecting belts (63), a plurality of arc grooves (640) are formed in the outer wall of the driving wheels (64), the connecting belts (63) are arranged in the arc grooves (640), the driving wheels (64) are connected with rotating motors (65), the rotating motors (65) are arranged on the fifth mounting plate (59), a rotating disc (66) is arranged at the lower end of the driven rod (61), the rotating disc (66) is positioned at the lower end of the rotating table (601);

the slag raking component (7) comprises a rotating rod (70) arranged on a rotating disc (66), a long strip plate (71) is arranged at the lower end of the rotating rod (70), a pair of end seats (72) are arranged at two ends of the long strip plate (71) in a downward extending mode, an upper extending seat (73) is hinged to each end seat (72), a bottom strip plate (74) is arranged at the lower end of the upper extending seat (73), a rear plate (75) is arranged at the bottom strip (74) in a downward extending mode, a slag raking plate (751) is arranged at the lower end of the rear plate (75) in an outward and vertical extending mode, a plurality of through holes are formed in each slag raking plate (751), slag raking teeth (750) are formed at the other end of each slag raking plate (751), the slag raking teeth (750) extend downwards, the end portions of the slag raking teeth (750) are of a structure, slag raking guard plates (752) are arranged on two sides of each slag raking plate (751), a pair of extending plates (79) are arranged on two sides of each bottom strip (74) in an outward extending mode, and a limiting groove (790) is formed in a limiting groove (790), long slat (71) both ends all upwards extend to be equipped with and extend solid board (76) a pair of, it all outwards extends to be equipped with evagination seat (760) to go up to extend solid board (76) upper end, evagination seat (760) have all been worn telescopic link (77), the upper end of telescopic link (77) is equipped with end plate (770), spring (78) have all been worn in telescopic link (77), spring (78) are located the lower extreme of evagination seat (760), the lower extreme of telescopic link (77) all is equipped with and pushes away dish (771), spring (78) all are located the top of pushing away dish (771), it all is equipped with effect awl (772) to push away dish (771) downwardly extending, the lower extreme of effect awl (772) all is located spacing groove (790).

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