CN102936692A - Cold punching die mold steel processing method - Google Patents
Cold punching die mold steel processing method Download PDFInfo
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- CN102936692A CN102936692A CN2012104063636A CN201210406363A CN102936692A CN 102936692 A CN102936692 A CN 102936692A CN 2012104063636 A CN2012104063636 A CN 2012104063636A CN 201210406363 A CN201210406363 A CN 201210406363A CN 102936692 A CN102936692 A CN 102936692A
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Abstract
The invention discloses a cold punching die mold steel processing method. The method comprises the steps that: a, a mold steel blank material casting step is carried out, wherein the mold steel blank material comprises the chemical components of, by weight: 0.26-0.36% of carbon, 1.05-1.50% of manganese, 0.35-0.60% of silicon, no more than 0.034% of phosphorus, no more than 0.0360% of sulfur, 0.450-0.65% of chromium, 0.003-0.006% of molybdenum, 0.001-0.025% of nickel, 0.005-0.015% of vanadium, 0.008-0.025% of copper, and a substrate of iron; the temperature of cast and shaped mold steel is reduced to 290 DEG C, and is increased to 650-760 DEG C; the temperature is maintained for 5-6h; furnace cooling is carried out until the temperature is 280-320 DEG C, and the temperature is maintained for 3-5h; the temperature is increased to 650-690 DEG C, and is maintained for 32h; and the temperature is reduced to 400 DEG C with a speed of 40 DEG C/h, and is reduced to 120 DEG C with a speed of 18 DEG C/h. The method provided by the invention has the advantages of simple process, good effect, low material cost, and good performance of prepared drawing die mold steel.
Description
Technical field
The present invention relates to the working method of cold-punching mould die steel.
Background technology
At present, cold-punching mould die steel, production technology has the following disadvantages:
1, large batch of product is large with labor intensity of operating staff, and quality product is inappropriate this technique of using entirely with manual control, labour-intensive technology, and production efficiency is very low;
2, its toughness is not fine, can not satisfy the demand, and load easily causes fracture for withstanding shocks.
Summary of the invention
A kind of working method of cold-punching mould die steel is provided on the purpose of the present invention, and technique of the present invention is simple, and is effective, and the cost of material is low, the die steel good mechanical property that makes.
Technical scheme of the present invention is as follows:
The working method of cold-punching mould die steel may further comprise the steps:
A, casting mold steel billet material step
The weight percent of each chemical composition is in the die steel blank: carbon 0.26-0.36%, manganese 1.05-1.50%, silicon 0.35-0.60%, phosphorus≤0.034%, sulphur≤0.0360%, chromium 0.450-0.65%, molybdenum 0.003-0.006%, nickel 0.001-0.025%, vanadium 0.005-0.015%, copper 0.008-0.025%, and matrix is iron; The die steel temperature of casting is down to 290 ℃, reheats to 650-760 ℃, is incubated 5-6 hour, and stove is chilled to 280-320 ℃, be incubated 3-5 hour, reheat to 650-690 ℃, be incubated 32 hours, be cooled to 400 ℃ with 40 ℃/hour, again with 18 ℃/hour, be cooled to 120 ℃;
B, heat treatment step
Die steel after the processing of hot school is heated to 900-950 ℃, puts into again 200-300 ℃ of salt bath insulation isothermal quenching in 2-3 hour, reheat 330-380 ℃, be incubated 2-3 hour temper;
C, with the die steel Shot Blasting after the thermal treatment;
D, quench treatment: die steel sent into be heated to 850-890 ℃ in the heat treatment furnace, and insulation 2-3 hour; Then, cool off with quenching oil;
E, temper: the die steel after will quenching is sent into and is heated to 300-400 ℃ in the tempering stove, insulation 50-70min; Behind the air cooling, die steel was processed 5-6 hour in-190 ℃ of lower liquid nitrogen;
F, bonderizing, be 180-200 ℃ with workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, the employing pH value is 8 surface conditioner processing 1min, after dripping empty 1-2min, adopt phosphorization agent to process 15-20min, after dripping empty 1-2min, adopt clear water to clean 1-2min again, after dripping again empty 1-2min, process 0.5-1min workpiece is placed 78-100 ℃ hot water;
G, with the piece packaging of Shot Blasting.
Among the described step b, the die steel after the processing of hot school is heated to 930 ℃, puts into again 250 ℃ of salt baths insulations isothermal quenching in 2.5 hours, reheat 350 ℃, be incubated 2.5 hours temper.
The present invention makes it be beneficial to large batch of industrialized production, and the phenomenon that has reduced appearance folder dirt in the forging process, has been not fully filled, the mechanical property of product is further improved, saved product materials, technique is simple, and is effective, and the cost of material is low, the die steel good mechanical property that makes, the die life of having improved product.
Embodiment
The working method of cold-punching mould die steel may further comprise the steps:
A, casting mold steel billet material step
The weight percent of each chemical composition is in the die steel blank: carbon 0.26-0.36%, manganese 1.05-1.50%, silicon 0.35-0.60%, phosphorus≤0.034%, sulphur≤0.0360%, chromium 0.450-0.65%, molybdenum 0.003-0.006%, nickel 0.001-0.025%, vanadium 0.005-0.015%, copper 0.008-0.025%, and matrix is iron; The die steel temperature of casting is down to 290 ℃, reheats to 650-760 ℃, is incubated 5-6 hour, and stove is chilled to 280-320 ℃, be incubated 3-5 hour, reheat to 650-690 ℃, be incubated 32 hours, be cooled to 400 ℃ with 40 ℃/hour, again with 18 ℃/hour, be cooled to 120 ℃;
B, heat treatment step
Die steel after the processing of hot school is heated to 900-950 ℃, puts into again 200-300 ℃ of salt bath insulation isothermal quenching in 2-3 hour, reheat 330-380 ℃, be incubated 2-3 hour temper;
C, with the die steel Shot Blasting after the thermal treatment;
D, quench treatment: die steel sent into be heated to 850-890 ℃ in the heat treatment furnace, and insulation 2-3 hour; Then, cool off with quenching oil;
E, temper: the die steel after will quenching is sent into and is heated to 300-400 ℃ in the tempering stove, insulation 50-70min; Behind the air cooling, die steel was processed 5-6 hour in-190 ℃ of lower liquid nitrogen;
F, bonderizing, be 180-200 ℃ with workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, the employing pH value is 8 surface conditioner processing 1min, after dripping empty 1-2min, adopt phosphorization agent to process 15-20min, after dripping empty 1-2min, adopt clear water to clean 1-2min again, after dripping again empty 1-2min, process 0.5-1min workpiece is placed 78-100 ℃ hot water;
G, with the piece packaging of Shot Blasting.
Among the described step b, the die steel after the processing of hot school is heated to 930 ℃, puts into again 250 ℃ of salt baths insulations isothermal quenching in 2.5 hours, reheat 350 ℃, be incubated 2.5 hours temper.
Of the present invention
PowerPerformance detection data is as follows:
Of the present invention
PowerPerformance detection data is as follows:
Performance index are as follows after testing:
Hardness HRC:61-69
Bending strength: 2400-2900Mpa
Impelling strength: 65-74J/cm2
Ultimate compression strength: 2000-2300 Mpa
Wear resistance: reach D2.
Claims (2)
1. the working method of cold-punching mould die steel is characterized in that: may further comprise the steps:
A, casting mold steel billet material step
The weight percent of each chemical composition is in the die steel blank: carbon 0.26-0.36%, manganese 1.05-1.50%, silicon 0.35-0.60%, phosphorus≤0.034%, sulphur≤0.0360%, chromium 0.450-0.65%, molybdenum 0.003-0.006%, nickel 0.001-0.025%, vanadium 0.005-0.015%, copper 0.008-0.025%, and matrix is iron; The die steel temperature of casting is down to 290 ℃, reheats to 650-760 ℃, is incubated 5-6 hour, and stove is chilled to 280-320 ℃, be incubated 3-5 hour, reheat to 650-690 ℃, be incubated 32 hours, be cooled to 400 ℃ with 40 ℃/hour, again with 18 ℃/hour, be cooled to 120 ℃;
B, heat treatment step
Die steel after the processing of hot school is heated to 900-950 ℃, puts into again 200-300 ℃ of salt bath insulation isothermal quenching in 2-3 hour, reheat 330-380 ℃, be incubated 2-3 hour temper;
C, with the die steel Shot Blasting after the thermal treatment;
D, quench treatment: die steel sent into be heated to 850-890 ℃ in the heat treatment furnace, and insulation 2-3 hour; Then, cool off with quenching oil;
E, temper: the die steel after will quenching is sent into and is heated to 300-400 ℃ in the tempering stove, insulation 50-70min; Behind the air cooling, die steel was processed 5-6 hour in-190 ℃ of lower liquid nitrogen;
F, bonderizing, be 180-200 ℃ with workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, the employing pH value is 8 surface conditioner processing 1min, after dripping empty 1-2min, adopt phosphorization agent to process 15-20min, after dripping empty 1-2min, adopt clear water to clean 1-2min again, after dripping again empty 1-2min, process 0.5-1min workpiece is placed 78-100 ℃ hot water;
G, packing.
2. the working method of cold-punching mould die steel according to claim 1, it is characterized in that: among the described step b, the die steel after the processing of hot school is heated to 930 ℃, puts into again 250 ℃ of salt baths insulations isothermal quenching in 2.5 hours, reheat 350 ℃, be incubated 2.5 hours temper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210406363.6A CN102936692B (en) | 2012-10-23 | 2012-10-23 | Cold punching die mold steel processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210406363.6A CN102936692B (en) | 2012-10-23 | 2012-10-23 | Cold punching die mold steel processing method |
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| CN102936692A true CN102936692A (en) | 2013-02-20 |
| CN102936692B CN102936692B (en) | 2014-10-08 |
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| CN201210406363.6A Expired - Fee Related CN102936692B (en) | 2012-10-23 | 2012-10-23 | Cold punching die mold steel processing method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483503A (en) * | 2015-12-04 | 2016-04-13 | 皖西学院 | Preparation method of mold steel for excavator track |
| CN105543579A (en) * | 2015-12-28 | 2016-05-04 | 合肥中澜新材料科技有限公司 | Forging technique of low-chromium aluminum alloy ingot |
| CN105729079A (en) * | 2016-03-30 | 2016-07-06 | 马鞍山市长冶重工科技有限公司 | Machining method for piston forging mould |
| CN106011597A (en) * | 2016-07-28 | 2016-10-12 | 董超超 | Die steel capable of detecting integrity thereof |
| CN106591685A (en) * | 2016-12-13 | 2017-04-26 | 柳州通为机械有限公司 | Automobile semi-axle forging and stamping die |
| CN106702271A (en) * | 2016-11-21 | 2017-05-24 | 杭州汽轮铸锻有限公司 | Low alloy and high strength B50E54C casting material and casting preparation method |
| CN107217203A (en) * | 2017-04-12 | 2017-09-29 | 滁州市东华模具制造有限公司 | A kind of preparation method of steel wheel hub cold punching die |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5270124A (en) * | 1989-06-30 | 1993-12-14 | The Broken Hill Proprietary Co., Ltd. | Composite roll |
| JP2002167644A (en) * | 2000-11-30 | 2002-06-11 | Daido Steel Co Ltd | Cold tool steel having constant deformation on treatment and method for producing cold tool using the steel |
| CN101549449A (en) * | 2008-03-31 | 2009-10-07 | 江都狮鹤高强度螺栓有限公司 | Processing technology for high-strength large hexagon head bolt used for steel structure |
| CN101549448A (en) * | 2008-03-31 | 2009-10-07 | 江都狮鹤高强度螺栓有限公司 | Processing technology for high-strength bolt used for steel net frame bolt ball node |
| CN102140612A (en) * | 2011-02-23 | 2011-08-03 | 上海三一重机有限公司 | Multi-component alloy cast steel bucket tooth and production process thereof |
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2012
- 2012-10-23 CN CN201210406363.6A patent/CN102936692B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5270124A (en) * | 1989-06-30 | 1993-12-14 | The Broken Hill Proprietary Co., Ltd. | Composite roll |
| JP2002167644A (en) * | 2000-11-30 | 2002-06-11 | Daido Steel Co Ltd | Cold tool steel having constant deformation on treatment and method for producing cold tool using the steel |
| CN101549449A (en) * | 2008-03-31 | 2009-10-07 | 江都狮鹤高强度螺栓有限公司 | Processing technology for high-strength large hexagon head bolt used for steel structure |
| CN101549448A (en) * | 2008-03-31 | 2009-10-07 | 江都狮鹤高强度螺栓有限公司 | Processing technology for high-strength bolt used for steel net frame bolt ball node |
| CN102140612A (en) * | 2011-02-23 | 2011-08-03 | 上海三一重机有限公司 | Multi-component alloy cast steel bucket tooth and production process thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483503A (en) * | 2015-12-04 | 2016-04-13 | 皖西学院 | Preparation method of mold steel for excavator track |
| CN105543579A (en) * | 2015-12-28 | 2016-05-04 | 合肥中澜新材料科技有限公司 | Forging technique of low-chromium aluminum alloy ingot |
| CN105729079A (en) * | 2016-03-30 | 2016-07-06 | 马鞍山市长冶重工科技有限公司 | Machining method for piston forging mould |
| CN106011597A (en) * | 2016-07-28 | 2016-10-12 | 董超超 | Die steel capable of detecting integrity thereof |
| CN106702271A (en) * | 2016-11-21 | 2017-05-24 | 杭州汽轮铸锻有限公司 | Low alloy and high strength B50E54C casting material and casting preparation method |
| CN106591685A (en) * | 2016-12-13 | 2017-04-26 | 柳州通为机械有限公司 | Automobile semi-axle forging and stamping die |
| CN106591685B (en) * | 2016-12-13 | 2018-10-30 | 柳州通为机械有限公司 | Automobile axle shaft forge die |
| CN107217203A (en) * | 2017-04-12 | 2017-09-29 | 滁州市东华模具制造有限公司 | A kind of preparation method of steel wheel hub cold punching die |
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| CN102936692B (en) | 2014-10-08 |
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