CN107674941A - The burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching - Google Patents
The burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching Download PDFInfo
- Publication number
- CN107674941A CN107674941A CN201710901964.7A CN201710901964A CN107674941A CN 107674941 A CN107674941 A CN 107674941A CN 201710901964 A CN201710901964 A CN 201710901964A CN 107674941 A CN107674941 A CN 107674941A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- oil quenching
- handling process
- alloy tool
- bearing steel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/58—Oils
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
Abstract
The present invention relates to a kind of burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching, including vacuum oil quenching ignition technique and vacuum tempering technique, wherein：Vacuum oil quenching ignition technique include heat radiation heating, staged vacuumize, the cooling of vacuum heat-preserving, vacuum quenching oil and air cooling, vacuum tempering technique includes being heated to temperature, vacuumized and is incubated and air cooling.By vacuum oil quenching and vacuum tempering, obtain the optimal performance of steel alloy bearing steel tap die, the screw cutting dense internal organization of screw die, there is preferable toughness under high rigidity, vacuum oil quenching, environment is not polluted, programming rate is slow, deformation of products and cracking are avoided, whole process is all carried out under vacuo, will not cause product surface decarburization.
Description
Technical field
The present invention relates to a kind of Technology for Heating Processing, especially a kind of alloy tool steel bearing steel tap die vacuum oil quenching
Technology for Heating Processing.
Background technology
Heat treatment refers to material in the solid state, by the means for heating, being incubated and cool down, to obtain intended tissue and performance
A kind of metal heat processing technique.
Due to the particularity of alloy tool steel and bearing steel material, existing alloy tool steel bearing steel wire cone-plate odontodes is used
Medium temperature salt bath quenching, salt bath are that Nacl is melted into liquid to be put into thawing as heating medium, then the workpiece that will be heat-treated
Liquid salt in heated, be finally heat-treated.
But there are some defects in salt bath quenching：1st, waste gas and boiling can be produced in heating process and during surface cleaning processing
Environmental pollution by water；2nd, medium temperature salt bath heat treatment programming rate during heating and thermal insulation than very fast, easily produces in inside workpiece
Quenching stress, cause deformation of products, cracking and quenching fragility；3rd, surface is oxidized easily in product heating process, causes to produce
Product skin decarburization, mortal wound is caused to tap die；4th, after salt bath heat treatment, product surface oil return chemical industry salt residual, it is necessary to enter
Row surface acid-washing and processing, complex process.
The content of the invention
The present invention is in order to solve the above-mentioned technical problem, there is provided a kind of alloy tool steel bearing steel tap die vacuum oil quenching
Technology for Heating Processing, heated under hermetically sealed vacuum state by heat radiation, vacuum is utilized in the case where sealing vacuum state after warm
Quenching oil is cooled down, and reaches the effect of quenching, and environment is not polluted, and programming rate is slow, avoids deformation of products and cracking,
The small good toughness of fragility under high rigidity, whole process are all carried out under vacuo, will not cause product surface decarburization.
The present invention concrete technical scheme be：A kind of alloy tool steel bearing steel tap die vacuum oil quenching heat treatment work
Skill, including vacuum oil quenching ignition technique and vacuum tempering technique, wherein：Vacuum oil quenching ignition technique includes heat radiation heating, staged
Vacuumize, the cooling of vacuum heat-preserving, vacuum quenching oil and air cooling, vacuum tempering technique include being heated to temperature, taken out very
Empty and insulation and air cooling.By vacuum oil quenching and vacuum tempering, the optimality of steel alloy bearing steel tap die is obtained
Can, the screw cutting dense internal organization of screw die, there is preferable toughness, vacuum oil quenching, to environment without dirty under high rigidity
Dye, programming rate is slow, avoids deformation of products and cracking, and whole process is all carried out under vacuo, will not cause product table emaciated face
Carbon.
Further, linear heat is used when heat radiation is heated, puts the workpiece in vacuum drying oven, 700 is heated to from normal temperature
DEG C, heat time 90-105min.
Further, it is to vacuumize to reach 0.02bar from normal pressure that staged, which vacuumizes, and vacuum is entered using staged
OK, each ladder needs to boost after vacuumizing end, is vacuumized again after boosting, until the vacuum of vacuum drying oven reaches
0.02bar。
Further, vacuumize and be divided into three ladders, the first ladder is evacuated down to 0.6bar from normal pressure, then boosted to
0.7bar, the second ladder are evacuated down to 0.3bar from 0.7bar, then boost to 0.4bar, and the 3rd ladder vacuumizes from 0.4bar
To 0.02bar, vacuumize and completed in 140-150min.
Further, heated again by heat radiation after vacuumizing, 850 DEG C are heated to from 700 DEG C, heat time 18-
20min。
Further, the temperature of vacuum heat-preserving is 850 DEG C, soaking time 140-155min.
Further, after soaking time terminates, put the workpiece in vacuum quenching oil, and lead to 0.02bar to vacuum drying oven simultaneously
Nitrogen, the logical nitrogen time be 4-5min, and the temperature of vacuum quenching oil is 45-55 DEG C, and the whole immersion time is 20-25min.
Further, vacuum tempering heating-up temperature is heated to 170-180 DEG C from normal temperature, and the heat time is no more than 20min, tempering
When holding temperature be 175 DEG C, vacuumize and reach 0.02bar, soaking time is no less than 120min.
The beneficial effects of the invention are as follows：By vacuum oil quenching and vacuum tempering, steel alloy bearing steel tap die is obtained
Optimal performance, the screw cutting dense internal organization of screw die, there is preferable toughness, vacuum oil quenching, to ring under high rigidity
Border is not polluted, and programming rate is slow, avoids deformation of products and cracking, and whole process is all carried out under vacuo, will not cause to produce
Product skin decarburization.
Brief description of the drawings
Fig. 1 is a kind of vacuum oil quenching ignition technique figure of the present invention；
Fig. 2 is a kind of vacuum tempering artwork of the present invention；
In figure：1st, Quench heating, 2, vacuum heating, 3, vacuum heat-preserving, 4, logical nitrogen, 5, air cooling, 6, vacuum hardening oil cooling
But, 7, vacuumize, 8, tempering heating, 9, tempering vacuumize insulation, 10, tempered air cools down.
Embodiment
Below by specific embodiment, and with reference to accompanying drawing, the invention will be further described.
Embodiment：A kind of burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching, including vacuum oil quenching
Ignition technique and vacuum tempering technique, wherein：
Vacuum oil quenching ignition technique includes：1st, Quench heating 1：Put the workpiece in vacuum drying oven, thermal recovery radiation linear heat will
Workpiece is heated to 700 DEG C from normal temperature, heat time 100min；
2nd, 7 are vacuumized, after being heated to 700 DEG C, mode is vacuumized using stepped, vacuum drying oven is vacuumized from normal pressure and reached
0.02bar, vacuumizing and be divided into three ladders, the first ladder is evacuated down to 0.6bar from normal pressure, then boosts to 0.7bar, and second
Ladder is evacuated down to 0.3bar from 0.7bar, then boosts to 0.4bar, and the 3rd ladder is evacuated down to 0.02bar from 0.4bar,
Vacuumize and completed in 140-150min；
3rd, vacuum heating 2：Heated again by heat radiation after vacuumizing, 850 DEG C are heated to from 700 DEG C, the heat time is
20min；
4th, vacuum heat-preserving 3：It is heated to 850 DEG C of progress vacuum heat-preservings, soaking time 150min；
5th, vacuum quenching oil cooling 6：After soaking time terminates, put the workpiece in vacuum quenching oil, and lead to simultaneously to vacuum drying oven
Nitrogen 4, nitrogen pressure 0.02bar, logical nitrogen time are 4min, and the temperature of vacuum quenching oil is 50 DEG C, entirely immerses the time
For 20min；
6th, air cooling 5：After vacuum quenching oil cooling, then normal temperature is cooled to by air.
Vacuum tempering technique includes：1st, tempering heating 8：175 DEG C are heated to from normal temperature, heat time 20min；
2nd, tempering vacuumizes insulation 9：Heating is incubated after terminating, and is vacuumized simultaneously, is vacuumized linear progress, is vacuumized and reach
0.02bar, soaking time 120min.
3rd, tempered air cooling 10 is carried out after insulation terminates.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent transformation that technical spirit is made to above example, still fall within the technology of the present invention side
The protection domain of case.
Claims (8)
1. the burning hot handling process of a kind of alloy tool steel bearing steel tap die vacuum oil quenching, it is characterised in that including vacuum oil quenching
Ignition technique and vacuum tempering technique, wherein：Vacuum oil quenching ignition technique include heat radiation heating, staged vacuumize, vacuum heat-preserving,
Vacuum quenching oil cools down and air cooling, vacuum tempering technique include being heated to temperature, vacuumize and be incubated and air is cold
But.
2. the burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching according to claim 1, its feature
It is to use linear heat during heat radiation heating, puts the workpiece in vacuum drying oven, be heated to 700 DEG C from normal temperature, the heat time
For 90-105min.
3. the burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching according to claim 1, its feature
It is to vacuumize to reach 0.02bar from normal pressure to be that staged vacuumizes, and vacuum is carried out using staged, and each ladder is taken out
Vacuum needs to boost after terminating, and is vacuumized again after boosting, until the vacuum of vacuum drying oven reaches 0.02bar.
4. the burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching according to claim 3, its feature
It is to vacuumize and is divided into three ladders, the first ladder is evacuated down to 0.6bar from normal pressure, then boosts to 0.7bar, the second ladder
0.3bar is evacuated down to from 0.7bar, then boosts to 0.4bar, the 3rd ladder is evacuated down to 0.02bar from 0.4bar, takes out true
Sky is completed in 140-150min.
5. the burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching according to claim 1, its feature
It is to be heated by heat radiation again after vacuumizing, 850 DEG C is heated to from 700 DEG C, heat time 18-20min.
6. the burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching according to claim 1, its feature
The temperature for being vacuum heat-preserving is 850 DEG C, soaking time 140-155min.
7. the alloy tool steel bearing steel tap die vacuum oil quenching according to claim 1 or 2 or 3 or 4 or 5 or 6 is burning hot
Handling process, it is characterised in that after soaking time terminates, put the workpiece in vacuum quenching oil, and lead to simultaneously to vacuum drying oven
0.02bar nitrogen, logical nitrogen time be 4-5min, and the Wen Didu of vacuum quenching oil is 45-55 DEG C, and the whole immersion time is
20-25min。
8. the alloy tool steel bearing steel tap die vacuum oil quenching according to claim 1 or 2 or 3 or 4 or 5 or 6 is burning hot
Handling process, it is characterised in that vacuum tempering heating-up temperature is heated to 170-180 DEG C from normal temperature, and the heat time is no more than 20min,
Holding temperature during tempering is 175 DEG C, vacuumizes and reaches 0.02bar, soaking time is no less than 120min.
Priority Applications (1)
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| CN201710901964.7A CN107674941A (en) | 2017-09-29 | 2017-09-29 | The burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching |
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| CN201710901964.7A CN107674941A (en) | 2017-09-29 | 2017-09-29 | The burning hot handling process of alloy tool steel bearing steel tap die vacuum oil quenching |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504839A (en) * | 2018-05-16 | 2018-09-07 | 浙江健力股份有限公司 | A kind of heat treatment process of high-carbon-chromium bearing steel pipe |
| CN112048611A (en) * | 2020-07-16 | 2020-12-08 | 张家港市弘扬金属制品制造有限公司 | Heat treatment method of bearing outer ring |
| CN112301207A (en) * | 2020-10-27 | 2021-02-02 | 蚌埠市利锋五金制品有限公司 | Vacuum oil quenching heat treatment method for cutter |
| CN114959193A (en) * | 2022-06-29 | 2022-08-30 | 江苏丰东热技术有限公司 | Method for reducing deformation by low-pressure quenching |
| CN115181843A (en) * | 2022-07-13 | 2022-10-14 | 江苏丰东热技术有限公司 | Heat treatment method of heat-resistant steel chuck |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108504839A (en) * | 2018-05-16 | 2018-09-07 | 浙江健力股份有限公司 | A kind of heat treatment process of high-carbon-chromium bearing steel pipe |
| CN112048611A (en) * | 2020-07-16 | 2020-12-08 | 张家港市弘扬金属制品制造有限公司 | Heat treatment method of bearing outer ring |
| CN112301207A (en) * | 2020-10-27 | 2021-02-02 | 蚌埠市利锋五金制品有限公司 | Vacuum oil quenching heat treatment method for cutter |
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| CN114959193A (en) * | 2022-06-29 | 2022-08-30 | 江苏丰东热技术有限公司 | Method for reducing deformation by low-pressure quenching |
| CN115181843A (en) * | 2022-07-13 | 2022-10-14 | 江苏丰东热技术有限公司 | Heat treatment method of heat-resistant steel chuck |
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Application publication date: 20180209 |