CN113996763A - Casting method of automobile chassis support - Google Patents
Casting method of automobile chassis support Download PDFInfo
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- CN113996763A CN113996763A CN202111311400.0A CN202111311400A CN113996763A CN 113996763 A CN113996763 A CN 113996763A CN 202111311400 A CN202111311400 A CN 202111311400A CN 113996763 A CN113996763 A CN 113996763A
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- iron
- mold
- molten iron
- casting
- vibration
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Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005266 casting Methods 0.000 title claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 130
- 229910052742 iron Inorganic materials 0.000 claims abstract description 65
- 238000003723 Smelting Methods 0.000 claims abstract description 11
- 229910000805 Pig iron Inorganic materials 0.000 claims description 35
- 238000001816 cooling Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 229910001315 Tool steel Inorganic materials 0.000 claims description 2
- 230000002123 temporal effect Effects 0.000 claims description 2
- 230000001788 irregular Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/08—Shaking, vibrating, or turning of moulds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to the field of automobiles, in particular to a casting method of an automobile chassis support. The casting method of the automobile chassis support comprises the following core technologies: s3, pouring (vibrating): the molten iron obtained in the smelting furnace is loaded in a container and then is led into the forming die in a pouring mode, and in the process of leading the molten iron into the forming die, the die is slightly and continuously shaken, so that the molten iron in the die is driven to continuously oscillate. According to the casting method of the automobile chassis support, the mold is continuously shaken when molten iron is poured, so that the molten iron in the mold can be driven to vibrate, bubbles generated when the molten iron is initially contacted with the mold can be flushed out under irregular vibration, the quality of the interior of a cooled formed part can be more uniform, and the pressure resistance of the produced support is higher.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a casting method of an automobile chassis support.
Background
The vehicle is a vehicle that has its own power to drive and can be driven by motor without the need of rail or electric power installation. In a broad sense, a vehicle that runs by being driven by its own mechanical energy is generally called an automobile.
The mode of pouring is mainly adopted in current automobile chassis support production, pour into the mould with the molten iron in, can form the rudiment of support after the cooling, and molten iron temperature after the melting is very high, when just in the mould contacts, can produce high-temperature gas in the twinkling of an eye, partly gaseous discharge is to the air, and partly gaseous can melt inside the water of sticking, this will lead to having a lot of bubbles in the support of processing out, the texture of self is loose relatively, thereby make the crushing resistance greatly reduced of support self.
Therefore, there is a need to provide a new method for casting a chassis bracket of an automobile to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides a casting method of an automobile chassis support.
A casting method of an automobile chassis support is characterized by comprising the following steps:
s1, removing impurities:
before the pig iron is melted, firstly cleaning the pig iron to remove impurities attached to the surface of the pig iron;
s2, molten pig iron:
after being cleaned, the pig iron is put into a smelting furnace, the high temperature in the smelting furnace can exceed the melting point of the pig iron, so that the solid pig iron is melted to form liquid molten iron;
s3, pouring (vibrating):
loading molten iron obtained in the smelting furnace in a container, then guiding the molten iron into a forming mold in a pouring mode, and slightly and continuously shaking the mold in the process of guiding the molten iron into the forming mold so as to drive the molten iron in the mold to continuously vibrate;
s4, cooling:
after the molten iron is completely poured into the mold, the cooling of the molten iron is accelerated by adopting an air cooling or water cooling mode;
s5, demolding:
the cooled molten iron is restored to a solid state again, and then the formed part is led out of the mold;
s6, quality detection:
and (4) detecting the quality of the formed parts, wherein the formed parts meeting the use standard can be sent to a workshop for polishing, and the formed parts not meeting the use standard are recovered and sent to the starting point of the production line again for new processing.
Preferably, in the step S1 of removing impurities, an acidic metal rust remover is adopted to remove rust on the surface of pig iron, and the metal rust remover is generally used at normal temperature or low temperature, has better effect when heated to 30-40 ℃, and is usually diluted by adding water and then directly put the pig iron into the solution.
Preferably, S2, the iron in the molten pig iron contains carbon element, so that it is alloyed iron, and the melting point of the alloyed iron is lower than that of the simple substance iron, so that the temperature of the melting furnace should be optimally controlled between 1100 ℃ and 1200 ℃, and the time required for melting is determined according to the size of the iron, and all the iron is in a molten state.
Preferably, S3, casting (oscillating) includes indirect oscillating and direct oscillating.
Preferably, the indirect oscillation: the equipment capable of generating vibration is connected with the die through a rod piece (such as a crank block mechanism, but a support needs to be erected), the vibration is transmitted into the die through the rod piece, so that the die generates vibration, the vibration equipment expressed here can directly use a motor, and the crank block mechanism is driven to do rotary motion through the motor, so that the die is pushed to vibrate.
Preferably, direct shaking: the mould is placed on a vibration device, the vibration generated by the device is directly transmitted into the mould, so that the mould generates vibration, the vibration device expressed here can directly use a vibration plate, the mould is placed on the vibration plate, and the vibration of the vibration plate can be directly transmitted to the temporal part of the mould, so that the mould vibrates;
preferably, in the step S3, in the casting (oscillation), the mold belongs to a high-temperature heat-resistant grinding tool, and is usually made of high-temperature heat-resistant grinding tool steel, wherein the traditional steel for making the casting mold in the steel is semi-high speed steel, molten iron is introduced into the space between the inner parts of the mold, and the mold needs to be preheated.
Preferably, in the cooling in S4, the air cooling is blown onto the surface of the molten iron in a manner of direct air flow, so as to accelerate the cooling speed of the molten iron, and the water cooling is to introduce cold water with a temperature angle into a circulating water pipe led into the mold, so as to rapidly take away the temperature inside the mold, thereby achieving the purpose of rapid cooling.
Preferably, in the step of S6, quality detection, the pressure resistance of the formed part is mainly detected, a heavy object is erected on the support, the weight of the heavy object is constant, the heavy object can be supported, the qualified time is reached, the standard is reached, the heavy object can be supported, or the qualified time is not reached, the standard is not reached, the heavy object can be supported, the detection time is determined according to the vehicle type of the vehicle frame, the optimal detection time is 30 seconds
The invention provides a casting method of an automobile chassis support, which is characterized in that when molten iron is poured, a mold is continuously shaken, so that the molten iron in the mold can be driven to vibrate, and bubbles generated when the molten iron is initially contacted with the mold can be flushed out under irregular vibration, so that the texture in a cooled formed part can be more uniform, and the pressure resistance of the produced support is higher.
Drawings
Fig. 1 is a schematic view of a processing flow structure of a casting method of an automobile chassis support provided by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Referring to fig. 1, a casting method of an automobile chassis support according to an embodiment of the present invention includes the following steps:
s1, removing impurities:
before the pig iron is melted, firstly cleaning the pig iron to remove impurities attached to the surface of the pig iron;
s2, molten pig iron:
after being cleaned, the pig iron is put into a smelting furnace, the high temperature in the smelting furnace can exceed the melting point of the pig iron, so that the solid pig iron is melted to form liquid molten iron;
in the process, the melting point of the pig iron is 1538 ℃, so that the internal temperature of the furnace can be controlled, and when other useless metal materials contained in the pig iron do not reach the melting point of the pig iron, the pig iron cannot be melted, so that impurities mixed in the pig iron can be discharged in the process;
s3, pouring (vibrating):
loading molten iron obtained in the smelting furnace in a container, then guiding the molten iron into a forming mold in a pouring mode, and slightly and continuously shaking the mold in the process of guiding the molten iron into the forming mold so as to drive the molten iron in the mold to continuously vibrate;
in the process, the mold is continuously shaken to drive the internal molten iron to vibrate, and the molten iron can wash out bubbles generated when the molten iron is initially contacted with the mold under irregular vibration, so that the texture of the interior of the cooled molded part can be more uniform and compact, and the pressure resistance of the produced bracket is higher;
s4, cooling:
after the molten iron is completely poured into the mold, the cooling of the molten iron is accelerated by adopting an air cooling or water cooling mode;
s5, demolding:
the cooled molten iron is restored to a solid state again, and then the formed part is led out of the mold;
s6, quality detection:
and (4) detecting the quality of the formed parts, wherein the formed parts meeting the use standard can be sent to a workshop for polishing, and the formed parts not meeting the use standard are recovered and sent to the starting point of the production line again for new processing.
S3, pouring (vibrating) including indirect vibrating and direct vibrating;
indirect oscillation: connecting equipment capable of generating vibration with the mold through a rod piece, and transmitting the vibration into the mold through the rod piece to enable the mold to generate vibration;
direct shaking: the mould is placed on vibration equipment, and the vibration generated by the equipment is directly transmitted into the mould, so that the mould generates vibration.
It should be noted that: in this kind of setting, can be according to the size of mould self and decide, the great mould of volume is difficult for carrying, consequently prefers indirect vibration, and the less mould of volume then prefers direct vibration, and under the great condition of needs oscillation frequency, the great mould of volume should also prefer direct vibration for promote the effect of vibrating.
S1, in the impurity removal, the rust on the surface of the pig iron can be removed by adopting an acidic metal rust remover, the metal rust remover is generally used at normal temperature or low temperature, the effect is better and obvious when the metal rust remover is heated to 30-40 ℃, and the use is that the pig iron is usually diluted by adding water and then is directly placed in the solution.
S2, because the iron in the molten pig iron contains carbon element, the iron is alloy iron, and the melting point of the alloy iron is lower than that of simple substance iron, the temperature of the smelting furnace should be controlled to be between 1100 ℃ and 1200 ℃, and the time required for melting is determined according to the size of the iron, and the iron can be completely melted.
S3, pouring (vibrating) including indirect vibrating and direct vibrating;
indirect oscillation: the equipment capable of generating vibration is connected with the mould through a rod piece (such as a crank sliding block mechanism, but a support needs to be erected), the vibration is transmitted into the mould through the rod piece, so that the mould generates vibration, the vibration equipment expressed here can directly use a motor, and the crank sliding block mechanism is driven to do rotary motion through the motor, so that the mould is pushed to vibrate;
direct shaking: place the mould on vibrations equipment, the vibrations that equipment produced are direct to be conducted inside the mould, make the mould produce vibrations, the vibrations equipment that here expresses can directly use the board that shakes, place the mould on the board that shakes, the vibrations of board self can directly conduct to mould temple portion shakes, thereby the mould shakes, and the mould of pouring used belongs to the heat-resisting grinding apparatus of high temperature, the heat-resisting grinding apparatus steel preparation of high temperature commonly used, the traditional steel grade of preparation casting die in this type of steel is half high speed steel, with the leading-in mould between inside of the molten iron, need preheat the mould.
And S4, in cooling, air cooling is blown on the surface of the molten iron in a mode of directly injecting air flow, so that the cooling speed of the molten iron is accelerated, and water cooling is to introduce cold water with a temperature angle into a circulating water pipe led into the mold, so that the temperature in the mold is quickly taken away, and the purpose of quick cooling is achieved.
S6, in quality detection, mainly detecting the compression resistance of a formed part, erecting a heavy object on a support, wherein the weight of the heavy object is constant, the weight can be supported, the qualified time is up to the standard, the weight can be supported, or the supported time is not up to the qualified time, the standard is not reached, the weight can be supported, the detection time is determined according to the vehicle type to which the vehicle frame belongs, and the optimal detection time is 30 seconds.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A casting method of an automobile chassis support is characterized by comprising the following steps:
s1, removing impurities:
before the pig iron is melted, firstly cleaning the pig iron to remove impurities attached to the surface of the pig iron;
s2, molten pig iron:
after being cleaned, the pig iron is put into a smelting furnace, the high temperature in the smelting furnace can exceed the melting point of the pig iron, so that the solid pig iron is melted to form liquid molten iron;
s3, pouring (vibrating):
loading molten iron obtained in the smelting furnace in a container, then guiding the molten iron into a forming mold in a pouring mode, and slightly and continuously shaking the mold in the process of guiding the molten iron into the forming mold so as to drive the molten iron in the mold to continuously vibrate;
s4, cooling:
after the molten iron is completely poured into the mold, the cooling of the molten iron is accelerated by adopting an air cooling or water cooling mode;
s5, demolding:
the cooled molten iron is restored to a solid state again, and then the formed part is led out of the mold;
s6, quality detection:
and (4) detecting the quality of the formed parts, wherein the formed parts meeting the use standard can be sent to a workshop for polishing, and the formed parts not meeting the use standard are recovered and sent to the starting point of the production line again for new processing.
2. A casting method of an automobile chassis support according to claim 1, characterized in that in S1, in the impurity removal, a metal rust remover containing acidity is adopted to remove rust on the surface of pig iron, and the metal rust remover is generally used at normal temperature or low temperature, has better effect when heated to 30 to 40 ℃, and is usually diluted by adding water before directly placing the pig iron in the solution.
3. The method for casting the undercarriage bracket of the automobile as set forth in claim 1, wherein S2, the iron in the molten pig iron contains carbon element and is thus an alloyed iron itself, and the melting point of the alloyed iron is lower than that of the simple substance iron, so that the temperature of the melting furnace should be controlled to be preferably 1100 ℃ to 1200 ℃, and the time required for melting is determined according to the size of the iron and all the iron is melted.
4. The method for casting the automotive chassis bracket according to claim 1, wherein the casting (oscillating) at S3 includes indirect oscillating and direct oscillating.
5. The method for casting the automotive chassis bracket according to claim 4, wherein the indirect oscillation: the equipment capable of generating vibration is connected with the die through a rod piece (such as a crank block mechanism, but a support needs to be erected), the vibration is transmitted into the die through the rod piece, so that the die generates vibration, the vibration equipment expressed here can directly use a motor, and the crank block mechanism is driven to do rotary motion through the motor, so that the die is pushed to vibrate.
6. The method for casting the automotive chassis bracket according to claim 4, wherein the direct oscillation: the mould is placed on the vibration equipment, vibration generated by the equipment is directly transmitted to the interior of the mould, so that the mould generates vibration, the vibration equipment expressed here can directly use the vibration plate, the mould is placed on the vibration plate, and the vibration of the vibration plate can be directly transmitted to the temporal part of the mould, so that the mould vibrates.
7. The method for casting the automobile chassis bracket according to claim 1, wherein in the step of casting (oscillating) S3, the mold belongs to a high-temperature heat-resistant grinding tool, and is made of high-temperature heat-resistant grinding tool steel, the steel is made of semi-high speed steel, and the conventional steel for making the casting mold is introduced between the interiors of the molds, so that the molds need to be preheated.
8. The method for casting the automobile chassis bracket according to claim 1, wherein in the cooling step S4, air cooling is blown on the surface of molten iron in a manner of direct air flow, so as to accelerate the cooling speed of the molten iron, and water cooling is performed by introducing cold water with a temperature angle into a circulating water pipe introduced into the mold, so as to rapidly take away the temperature inside the mold, thereby achieving the purpose of rapid cooling.
9. The method for casting the automobile chassis support according to claim 1, wherein in the step of S6, quality detection, the pressure resistance of the formed part is mainly detected, a heavy object is arranged on the support, the weight of the heavy object is constant, the heavy object can be supported, the qualified time is the standard, the object can be supported, or the qualified time is not reached, the standard is not reached, the detected heavy object can be determined according to the type of the automobile frame to which the automobile chassis support belongs, and the detection time is optimally 30 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311400.0A CN113996763A (en) | 2021-11-08 | 2021-11-08 | Casting method of automobile chassis support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311400.0A CN113996763A (en) | 2021-11-08 | 2021-11-08 | Casting method of automobile chassis support |
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| CN113996763A true CN113996763A (en) | 2022-02-01 |
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