CN106048423B - A kind of spinneret and its manufacture method - Google Patents
A kind of spinneret and its manufacture method Download PDFInfo
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- CN106048423B CN106048423B CN201610601305.7A CN201610601305A CN106048423B CN 106048423 B CN106048423 B CN 106048423B CN 201610601305 A CN201610601305 A CN 201610601305A CN 106048423 B CN106048423 B CN 106048423B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
Abstract
The invention discloses a kind of spinneret, in mass ratio including following components：C：0.06~0.10, Mn：0.30~0.60, P≤0.02, S≤0.01, Si：0.20~0.50, Cr：7.50~9.20, Mo：0.90~1.15, V：0.18~0.25, Nb：0.06~0.10, N：0.03~0.07, Ni：≤0.10、Cu：0.10~0.30, W：≤0.0004、Co：≤0.001、B：0.01~0.05, TiC≤0.0006, surplus are iron.The invention also discloses a kind of manufacture method of spinneret.The present invention have the characteristics that simple in construction, low cost, wearability it is good, it is highly polished, prevent abrasion perforation and service life it is long.
Description
Technical field
The present invention relates to spinneret production technology, specifically a kind of spinneret and its manufacture method.
Background technology
Laying head is the key equipment on high speed wire rod finishing block production line, and the water cooling section of cooling line is controlled after finishing mill
Between scattered volume transporter.And spinneret is as one of most important part of Laying head, wire rod is by pinch rod and spinning power traction
Under the motive force that rises, relative inertness power, frictional force, the comprehensive function such as normal pressure, it be screw to change linear motion, formation diameter
About Ф 1080mm ballast coil spues from spinneret, and the paving hooked falls on stelmo line entrance volume road.Spinneret
It is the key for controlling wire rod to change from straight line to wire rod, the speed of production of field high-speed wire rod is in more than 140m/s, wire temperature
For scope between 700~950 DEG C, wire rod produces high speed relative motion in spinneret, and deforms, and tube wall is with wire rod in height
Severe friction is constantly carried out under conditions of speed, high temperature, so as to cause tube wall surface premature breakdown.And spinneret must wear, no
Laying head whole dynamic balance can be only influenceed, aggravation vibration, can also cause spinneret to export stable ring-like ability to conveyer
Constantly deterioration.And it is unstable it is ring-like can disturb cooling uniformity and can also facilitate reforming platform Laying head winding accident, need
Want the milling train of frequent and high cost to shut down to change the spinneret of premature abrasion, and need to solve to close with reforming the curling round the roll at platform
The problem of connection.Therefore the heel and toe wear of spinneret causes service life too short and spinning exception is all to govern height all the time
One of an important factor for fast wire rod production line production cost and production efficiency.Therefore, there is an urgent need to develop with high intensity, height
Wear-resisting, resistant to elevated temperatures spinneret, increases the service life, and strengthens the stability of high-speed wire mill.
It is domestic at present that spinneret is generally produced using 9Cr1Mo materials, in high temperature (700~950 DEG C) and at a high speed (140m/s)
Wire rod rolling during, up to production requirement is often unable to reach, service life is shorter for intensity and wearability, simultaneously because spinning
Tube inlet section Curvature varying is too fast, and spinning first strong bending section of tube head (300~500mm of introduction segment) frictional force is larger, easily
Obvious cut is caused, the unplanned property stop production to overhaul caused by spinneret wears and perforates often occurs, has a strong impact on
The stability of the production order.
The content of the invention
It is an object of the invention to overcome above the shortcomings of the prior art, there is provided a kind of simple in construction, cost is just
Preferably, wearability spinneret that is good, highly polished, preventing abrasion perforation and service life length.
The present invention also provides a kind of manufacture method of spinneret.
In order to achieve the above object, the present invention uses following technical scheme：A kind of spinneret, include in mass ratio with the following group
Point：C：0.06~0.10, Mn：0.30~0.60, P≤0.02, S≤0.01, Si：0.20~0.50, Cr：7.50~9.20, Mo：
0.90~1.15, V：0.18~0.25, Nb：0.06~0.10, N：0.03~0.07, Ni：≤0.10、Cu：0.10~0.30, W：
≤0.0004、Co：≤0.001、B：0.01~0.05, TiC≤0.0006, surplus are iron.
Include following components in mass ratio：C：0.07、Mn：0.4、P≤0.02、S≤0.01、Si：0.35、Cr：820、Mo：
1.00、V：0.20、Nb：0.07、N：0.05、Ni：≤0.10、Cu：0.10~0.30, W：≤0.0004、Co：≤0.001、B：
0.01~0.05, TiC≤0.0006, surplus are iron.
The spinneret includes introduction segment, deformation section and stable section, is opened in 300~500mm of introduction segment regions non-stress side
Groove, using the plasma-arc by DC powered as thermal source, simultaneously high-velocity spray is formed fusing tungsten-carbide powder to stress side
Tungsten carbide coating.
The thickness of the tungsten carbide coating is 0.05~0.09mm.
The TiC is nanometer grade powder.
The manufacture method of above-mentioned spinneret, comprises the following steps：
(1), waste：Take includes following components in mass ratio：C：0.06~0.10, Mn：0.30~0.60, P≤
0.02、S≤0.01、Si：0.20~0.50, Cr：7.50~9.20, Mo：0.90~1.15, V：0.18~0.25, Nb：0.06~
0.10、N：0.03~0.07, Ni：≤0.10、Cu：0.10~0.30, W：≤0.0004、Co：≤0.001、B：0.01~0.05,
TiC≤0.0006, surplus are iron；
Melting：Above-mentioned raw materials are put into electroslag refining furnace, energization melting, liquid steel temperature adds when reaching 1650~1670 DEG C
Enter aluminium cake and carry out deoxidation；
Cast：1580~1600 DEG C of molten steel is come out of the stove and poured into a mould after steel ladle calmness 3~5 minutes according to mould, quiet
Put stand-by；
Thermomechanical treatment：Casting is heated to 1270 DEG C with 4 DEG C/s programming rate, is incubated after 10min with the cold of 6 DEG C/s
Speed is cooled to 850 DEG C of austenite Unhydrated cement temperature, the deformation that drafts is 50% is carried out after soaking 30S, then with 4 DEG C/s
It is cooled to 400 DEG C；
Isothermal cools down：Casting after thermomechanical treatment is put into 400 DEG C of Muffle furnace, and is incubated 20min, then with 4
DEG C/min cooling velocity furnace cooling；
(2), raw material made from step (1) are put into bending machine and bend shaping, manufactured spinneret includes importing
Section, deformation section and stable section；
(3), spinneret is when bending shaping, using the cylindrical ceramic grinding head for adapting to spinning pipe diameter, cylinder pottery
Porcelain grinding head hollow structure, and tracheae is connected, probe into spinneret and inwall is polished and cleared up residual waste in pipe, improve
Spinning inner wall curve, the coefficient of friction of spinning inside pipe wall is greatly reduced, to spinneret when reducing high-speed rod operation
The impact abrasion of inwall；
(4), slotted in 300~500mm of introduction segment regions non-stress side, using the plasma-arc work by DC powered
For thermal source, simultaneously high-velocity spray forms tungsten carbide coating to fusing tungsten-carbide powder to stress side；
(5) repairing is packaged to non-stress side after the completion of, spraying；
(6), complete, test product.
Tungsten carbide coating thickness is 0.05~0.09mm in the step (4).
Carbon atom is embedded in the gap of tungsten metal lattice in tungsten-carbide powder in the step (4), forms interstitial solid solution body.
The present invention is had the following advantages and effect relative to prior art：
1st, the present invention includes following components in mass ratio：C：0.06~0.10, Mn：0.30~0.60, P≤0.02, S≤
0.01、Si：0.20~0.50, Cr：7.50~9.20, Mo：0.90~1.15, V：0.18~0.25, Nb：0.06~0.10, N：
0.03~0.07, Ni：≤0.10、Cu：0.10~0.30, W：≤0.0004、Co：≤0.001、B：0.01~0.05, TiC≤
0.0006, surplus is iron, have simple in construction, low cost, wearability it is good, it is highly polished, prevent abrasion from perforating and using the longevity
Order the features such as long.
2nd, the spinneret in the present invention includes introduction segment, deformation section and stable section, non-in 300~500mm of introduction segment regions
Stress side slot, using the plasma-arc by DC powered be used as thermal source, fusing tungsten-carbide powder simultaneously high-velocity spray to by
Power side forms tungsten carbide coating；Improve wearability, the corrosion-resistant and resistance to elevated temperatures of spinneret.
3rd, the thickness of the tungsten carbide coating in the present invention is 0.05~0.09mm；Further improve performance.
4th, the spinneret in the present invention often causes inside pipe wall appearance of spinning when bending shaping because heating is uneven
" ring " phenomenon, inwall coefficient of friction is big, and a running orbit groove occurs by wire rod abrasion in spinneret in process of production,
And as the increase track groove of steel transportation amount can become increasingly deeper, it equally can also accelerate the abrasion of spinneret and change spinning effect
Fruit.Therefore using the cylindrical ceramic grinding head for adapting to spinning pipe diameter, hollow connection tracheae, probe into spinneret to enter inwall
Residual waste in row polishing and cleaning pipe, improves spinning inner wall curve, greatly reduces the coefficient of friction of spinning inside pipe wall,
The impact for the inside pipe wall that spins is worn when reducing high-speed rod operation, ring-like ability is stablized in optimization output, extends spinning
Pipe service life.
5th, the present invention suitably reduces phosphorus content, improves the plasticity and toughness of alloy, optimization carbon, molybdenum element ratio, it is rotten to reduce crystal boundary
Phenomenon is lost, alloy strength caused by carbon content reduces is made up and declines, improve the thermostrength of alloy, cause in high temperature environments
Alloy can keep enough intensity and creep resisting ability；The ratio of chromium, nickel, nickel element enhance alloy passive state diaphragm Cr2O3
Corrosion resistance, so as to further improve the ductility of alloy material and elevated temperature strength；Silicon, phosphorus, sulphur are the impurity in alloy
Element, scale when can reduce high temperature produce, and strengthen the heat resistance and cutting ability of alloy；Appropriate vanadium and niobium can be formed with carbon
Tiny and stable alloy carbide and be in dispersoid particle or granular distribution in solid solution crystal grain, by dispersion-strengthened effect,
Both alloy strength and hardness, and the plasticity and toughness of stable alloy are significantly improved；Nitrogen is steady by solution strengthening effect, increase alloy structure
It is qualitative, improve the creep rupture strength value of heat affected area；Copper strengthens alloy corrosion resistance, reduces alloy work-hardening effect, is allowed to Yi Leng
Shape, boron can then increase the solid solution capacity of copper, strengthen the precipitating reinforcing effect of copper, improve the compactness and hot rolling performance of alloy；
Micro tungsten and cobalt are added, the carbonization tungsten compound of formation can significantly improve the red hardness and heat resistance of alloy；Add appropriate
Nanoscale titanium carbide make the dense internal organization of alloy, crystal grain thinning power, while reduce aging sensitivity and cold brittleness.
Brief description of the drawings
Fig. 1 is a kind of structural representation of spinneret.
Label and title are as follows in figure：
| 1 | Introduction segment | 2 | Deformation section |
| 3 | Stable section | 4 | Non-stress side |
| 5 | Stress side | 6 | Groove |
Embodiment
For ease of it will be appreciated by those skilled in the art that below in conjunction with the accompanying drawings and embodiment the present invention is made it is further specifically
It is bright.
Embodiment 1：
As shown in figure 1, a kind of spinneret, in mass ratio including following components：C：0.06、Mn：0.30、P≤0.02、S≤
0.01、Si：0.20、Cr：7.50、Mo：0.90、V：0.18、Nb：0.06、N：0.03、Ni：≤0.10、Cu：0.10~0.30, W：
≤0.0004、Co：≤0.001、B：0.01~0.05, TiC≤0.0006, surplus are iron.
Spinneret in the present embodiment includes introduction segment, deformation section and stable section, non-in 300~500mm of introduction segment regions
Stress side slot, using the plasma-arc by DC powered be used as thermal source, fusing tungsten-carbide powder simultaneously high-velocity spray to by
Power side forms tungsten carbide coating；The thickness of tungsten carbide coating is 0.05mm；TiC is nanometer grade powder.
The manufacture method of above-mentioned spinneret, comprises the following steps：
(1), waste：Take includes following components in mass ratio：C：0.06、Mn：0.30、P≤0.02、S≤0.01、
Si：0.20、Cr：7.50、Mo：0.90、V：0.18、Nb：0.06、N：0.03、Ni：≤0.10、Cu：0.10~0.30, W：≤
0.0004、Co：≤0.001、B：0.01~0.05, TiC≤0.0006, surplus are iron；
Melting：Above-mentioned raw materials are put into electroslag refining furnace, energization melting, liquid steel temperature adds when reaching 1650~1670 DEG C
Enter aluminium cake and carry out deoxidation；
Cast：1580 DEG C of molten steel is come out of the stove and poured into a mould after steel ladle is calm 3 minutes according to mould, set aside for use；
Thermomechanical treatment：Casting is heated to 1270 DEG C with 4 DEG C/s programming rate, is incubated after 10min with the cold of 6 DEG C/s
Speed is cooled to 850 DEG C of austenite Unhydrated cement temperature, the deformation that drafts is 50% is carried out after soaking 30S, then with 4 DEG C/s
It is cooled to 400 DEG C；
Isothermal cools down：Casting after thermomechanical treatment is put into 400 DEG C of Muffle furnace, and is incubated 20min, then with 4
DEG C/min cooling velocity furnace cooling；
(2), raw material made from step (1) are put into bending machine and bend shaping, manufactured spinneret includes importing
Section, deformation section and stable section；
(3), spinneret is when bending shaping, using the cylindrical ceramic grinding head for adapting to spinning pipe diameter, cylinder pottery
Porcelain grinding head hollow structure, and tracheae is connected, probe into spinneret and inwall is polished and cleared up residual waste in pipe, improve
Spinning inner wall curve, the coefficient of friction of spinning inside pipe wall is greatly reduced, to spinneret when reducing high-speed rod operation
The impact abrasion of inwall；
(4), slotted in introduction segment 300mm regions non-stress side, using the plasma-arc by DC powered as heat
Source, fusing tungsten-carbide powder and high-velocity spray form tungsten carbide coating to stress side；
(5) repairing is packaged to non-stress side after the completion of, spraying；
(6), complete, test product.
Tungsten carbide coating thickness is 0.05mm in the step (4)；Carbon atom is embedded in tungsten in tungsten-carbide powder in step (4)
The gap of metal lattice, form interstitial solid solution body.
Embodiment 2：
A kind of spinneret, in mass ratio including following components：C：0.07、Mn：0.4、P≤0.02、S≤0.01、Si：
0.35、Cr：820、Mo：1.00、V：0.20、Nb：0.07、N：0.05、Ni：≤0.10、Cu：0.10~0.30, W：≤0.0004、
Co：≤0.001、B：0.01~0.05, TiC≤0.0006, surplus are iron.
Spinneret in the present embodiment includes introduction segment, deformation section and stable section, in introduction segment 400mm regions non-stress side
Fluting, using the plasma-arc by DC powered as thermal source, fusing tungsten-carbide powder and high-velocity spray to stress side shape
Into tungsten carbide coating；The thickness of tungsten carbide coating is 0.07mm；TiC is nanometer grade powder.
The manufacture method of above-mentioned spinneret, comprises the following steps：
(1), waste：Take includes following components in mass ratio：C：0.07、Mn：0.4、P≤0.02、S≤0.01、Si：
0.35、Cr：820、Mo：1.00、V：0.20、Nb：0.07、N：0.05、Ni：≤0.10、Cu：0.10~0.30, W：≤0.0004、
Co：≤0.001、B：0.01~0.05, TiC≤0.0006, surplus are iron；
Melting：Above-mentioned raw materials are put into electroslag refining furnace, energization melting, liquid steel temperature adds when reaching 1650~1670 DEG C
Enter aluminium cake and carry out deoxidation；
Cast：1600 DEG C of molten steel is come out of the stove and poured into a mould after steel ladle is calm 5 minutes according to mould, set aside for use；
Thermomechanical treatment：Casting is heated to 1270 DEG C with 4 DEG C/s programming rate, is incubated after 10min with the cold of 6 DEG C/s
Speed is cooled to 850 DEG C of austenite Unhydrated cement temperature, the deformation that drafts is 50% is carried out after soaking 30S, then with 4 DEG C/s
It is cooled to 400 DEG C；
Isothermal cools down：Casting after thermomechanical treatment is put into 400 DEG C of Muffle furnace, and is incubated 20min, then with 4
DEG C/min cooling velocity furnace cooling；
(2), raw material made from step (1) are put into spinneret machine and bend shaping, manufactured spinneret includes leading
Enter section, deformation section and stable section；
(3), spinneret is when bending shaping, using the cylindrical ceramic grinding head for adapting to spinning pipe diameter, cylinder pottery
Porcelain grinding head hollow structure, and tracheae is connected, probe into spinneret and inwall is polished and cleared up residual waste in pipe, improve
Spinning inner wall curve, the coefficient of friction of spinning inside pipe wall is greatly reduced, to spinneret when reducing high-speed rod operation
The impact abrasion of inwall；
(4), slotted in introduction segment 400mm regions non-stress side, using the plasma-arc by DC powered as heat
Source, fusing tungsten-carbide powder and high-velocity spray form tungsten carbide coating to stress side；
(5) repairing is packaged to non-stress side after the completion of, spraying；
(6), complete, test product.
Tungsten carbide coating thickness is 0.07mm in the step (4)；Carbon atom is embedded in tungsten in tungsten-carbide powder in step (4)
The gap of metal lattice, form interstitial solid solution body.
Embodiment 3：
A kind of spinneret, in mass ratio including following components：C：0.10、Mn：0.60、P≤0.02、S≤0.01、Si：
0.50、Cr：9.20、Mo：1.15、V：0.25、Nb：0.10、N：0.07、Ni：≤0.10、Cu：0.10~0.30, W：≤
0.0004、Co：≤0.001、B：0.01~0.05, TiC≤0.0006, surplus are iron.
The present embodiment spinneret includes introduction segment, deformation section and stable section, is opened in introduction segment 500mm regions non-stress side
Groove, using the plasma-arc by DC powered as thermal source, simultaneously high-velocity spray is formed fusing tungsten-carbide powder to stress side
Tungsten carbide coating；The thickness of tungsten carbide coating is 0.09mm；TiC is nanometer grade powder.
The manufacture method of above-mentioned spinneret, comprises the following steps：
(1), waste：C：0.10、Mn：0.60、P≤0.02、S≤0.01、Si：0.50、Cr：9.20、Mo：1.15、
V：0.25、Nb：0.10、N：0.07、Ni：≤0.10、Cu：0.10~0.30, W：≤0.0004、Co：≤0.001、B：0.01~
0.05th, TiC≤0.0006, surplus are iron；
Melting：Above-mentioned raw materials are put into electroslag refining furnace, energization melting, liquid steel temperature adds when reaching 1650~1670 DEG C
Enter aluminium cake and carry out deoxidation；
Cast：1580~1600 DEG C of molten steel is come out of the stove and poured into a mould after steel ladle calmness 3~5 minutes according to mould, quiet
Put stand-by；
Thermomechanical treatment：Casting is heated to 1270 DEG C with 4 DEG C/s programming rate, is incubated after 10min with the cold of 6 DEG C/s
Speed is cooled to 850 DEG C of austenite Unhydrated cement temperature, the deformation that drafts is 50% is carried out after soaking 30S, then with 4 DEG C/s
It is cooled to 400 DEG C；
Isothermal cools down：Casting after thermomechanical treatment is put into 400 DEG C of Muffle furnace, and is incubated 20min, then with 4
DEG C/min cooling velocity furnace cooling；
(2), raw material made from step (1) are put into spinneret machine and bend shaping, manufactured spinneret includes leading
Enter section, deformation section and stable section；
(3), spinneret is when bending shaping, using the cylindrical ceramic grinding head for adapting to spinning pipe diameter, cylinder pottery
Porcelain grinding head hollow structure, and tracheae is connected, probe into spinneret and inwall is polished and cleared up residual waste in pipe, improve
Spinning inner wall curve, the coefficient of friction of spinning inside pipe wall is greatly reduced, to spinneret when reducing high-speed rod operation
The impact abrasion of inwall；
(4), slotted in introduction segment 500mm regions non-stress side, using the plasma-arc by DC powered as heat
Source, fusing tungsten-carbide powder and high-velocity spray form tungsten carbide coating to stress side；
(5) repairing is packaged to non-stress side after the completion of, spraying；
(6), complete, test product.
Tungsten carbide coating thickness is 0.09mm in the step (4)；Carbon atom is embedded in tungsten in tungsten-carbide powder in step (4)
The gap of metal lattice, form interstitial solid solution body.
Above-mentioned embodiment is the preferred embodiments of the present invention, can not be limited the invention, and others are appointed
The change or other equivalent substitute modes what is made without departing from technical scheme, are included in the protection of the present invention
Within the scope of.
Claims (8)
1. a kind of manufacture method of spinneret, it is characterised in that comprise the following steps：
(1), waste：Take includes following components in mass ratio：C：0.06~0.10, Mn：0.30~0.60, P≤0.02, S
≤0.01、Si：0.20~0.50, Cr：7.50~9.20, Mo：0.90~1.15, V：0.18~0.25, Nb：0.06~0.10,
N：0.03~0.07, Ni：≤0.10、Cu：0.10~0.30, W：≤0.0004、Co：≤0.001、B：0.01~0.05, TiC≤
0.0006, surplus is iron；
Melting：Above-mentioned raw materials are put into electroslag refining furnace, energization melting, liquid steel temperature adds aluminium when reaching 1650~1670 DEG C
Cake carries out deoxidation；
Cast：1580~1600 DEG C of molten steel is come out of the stove and poured into a mould after steel ladle calmness 3~5 minutes according to mould, and standing is treated
With；
Thermomechanical treatment：Casting is heated to 1270 DEG C with 4 DEG C/s programming rate, is incubated cold with 6 DEG C/s cooling rate after 10min
But 850 DEG C of austenite Unhydrated cement temperature is arrived, the deformation that drafts is 50% is carried out after soaking 30s, is then cooled down with 4 DEG C/s
To 400 DEG C；
Isothermal cools down：Casting after thermomechanical treatment is put into 400 DEG C of Muffle furnace, and is incubated 20min, then with 4 DEG C/
Min cooling velocity furnace cooling；
(2), raw material made from step (1) are put into bending machine and bend shaping, manufactured spinneret includes introduction segment, become
Shape section and stable section；
(3), when bending shaping, using the cylindrical ceramic grinding head for adapting to spinning pipe diameter, cylindrical ceramic is ground spinneret
Bistrique hollow structure, and tracheae is connected, probe into spinneret and inwall is polished and cleared up residual waste in pipe, improve and tell
Silk inner wall curve, the coefficient of friction of spinning inside pipe wall is greatly reduced, to the inside pipe wall that spins when reducing high-speed rod operation
Impact abrasion；
(4), slotted in 300~500mm of introduction segment regions non-stress side, using the plasma-arc by DC powered as heat
Source, fusing tungsten-carbide powder and high-velocity spray form tungsten carbide coating to stress side；
(5) repairing is packaged to non-stress side after the completion of, spraying；
(6), complete, test product.
2. the manufacture method of spinneret according to claim 1, it is characterised in that：Tungsten carbide coating in the step (4)
Thickness is 0.05~0.09mm.
3. the manufacture method of spinneret according to claim 1, it is characterised in that：Tungsten-carbide powder in the step (4)
The gap of middle carbon atom insertion tungsten metal lattice, forms interstitial solid solution body.
4. it is according to claim 1 spinning pipe manufacturing method made from spinneret, it is characterised in that in mass ratio include with
Lower component：C：0.06~0.10, Mn：0.30~0.60, P≤0.02, S≤0.01, Si：0.20~0.50, Cr：7.50~
9.20、Mo：0.90~1.15, V：0.18~0.25, Nb：0.06~0.10, N：0.03~0.07, Ni：≤0.10、Cu：0.10
~0.30, W：≤0.0004、Co：≤0.001、B：0.01~0.05, TiC≤0.0006, surplus are iron.
5. spinneret according to claim 4, it is characterised in that in mass ratio including following components：C：0.07、Mn：
0.4、P≤0.02、S≤0.01、Si：0.35、Cr：8.20、Mo：1.00、V：0.20、Nb：0.07、N：0.05、Ni：≤0.10、
Cu：0.10~0.30, W：≤0.0004、Co：≤0.001、B：0.01~0.05, TiC≤0.0006, surplus are iron.
6. spinneret according to claim 4, it is characterised in that：The spinneret includes introduction segment, deformation section and stably
Section, slot in 300~500mm of introduction segment regions non-stress side, using the plasma-arc by DC powered as thermal source, melt
Change tungsten-carbide powder and high-velocity spray forms tungsten carbide coating to stress side.
7. spinneret according to claim 6, it is characterised in that：The thickness of the tungsten carbide coating be 0.05~
0.09mm。
8. the spinneret according to claim 4 or 5, it is characterised in that：The TiC is nanometer grade powder.
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| CN108044050A (en) * | 2017-11-15 | 2018-05-18 | 重庆嘉萌鸿业科技有限公司 | A kind of forming method of automobile water inlet bend pipe |
| CN110064674A (en) * | 2019-04-20 | 2019-07-30 | 北京杜根鸿运科技发展有限公司 | A kind of compound spinneret and its manufacturing method |
| CN110081053A (en) * | 2019-04-20 | 2019-08-02 | 北京杜根鸿运科技发展有限公司 | A kind of compound spinneret and its manufacturing method for small dimension wire rod |
| CN110238205A (en) * | 2019-07-06 | 2019-09-17 | 北京杜根鸿运科技发展有限公司 | A kind of spinneret of self-healing |
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| US20130075513A1 (en) * | 2011-09-26 | 2013-03-28 | Siemens Industry, Inc. | Rolling mill coil forming laying head with path or pipe having dissimilar materials composite construction |
| CN104264059A (en) * | 2014-10-18 | 2015-01-07 | 无棣向上机械设计服务有限公司 | Novel heat resisting steel and preparation method thereof |
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