CN105714090A - New steel rolling wheel heat treatment technology - Google Patents
New steel rolling wheel heat treatment technology Download PDFInfo
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- CN105714090A CN105714090A CN201410719498.7A CN201410719498A CN105714090A CN 105714090 A CN105714090 A CN 105714090A CN 201410719498 A CN201410719498 A CN 201410719498A CN 105714090 A CN105714090 A CN 105714090A
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Abstract
The present invention discloses a new steel rolling wheel heat treatment technology characterized by using 9SiCr as a material, the technology comprises the following steps: (1) preheating, to be more specific, heating in a salt bath furnace to 580-600 DEG C in a heating rate of 30-50 DEG C / h, and thermally insulating for 50-80min; (2) quenching, to be more specific, heating to temperature of 850-860 DEG C in a heating rate of 20-30 DEG C / h; thermally insulating for 30-60min, quenching at quenching temperature of 200-220 DEG C for 2-2.5h, using a nitrate for cooling; (3) first tempering, to be more specific, tempering at tempering temperature of 240-280 DEG C, and thermally insulating for 2-2.5h; and (4) second tempering, to be more specific, tempering at tempering temperature of 240-280 DEG C, and thermally insulating for 2-3h. The new steel rolling wheel heat treatment technology can improve surface hardness, cutting toughness and service life of a Cr12MoV steel rolling wire wheel.
Description
Technical field
The invention belongs to Technology for Heating Processing field, specifically the Technology for Heating Processing of a kind of Novel steel cylindrical die roll.
Background technology
Cylindrical die roll is external thread rolling tool.At screw tool and standard component maker, cylindrical die roll is frock crucial in production process and important cutter, the height in its life-span and the quality of quality directly influence the precision of the workpiece such as the screw tap, the standard component that process, manufacturing schedule are brought material impact simultaneously.Therefore, the crudy of cylindrical die roll seems particularly critical.Cylindrical die roll was lost efficacy and carried out statistical analysis it can be seen that heat treatment is undoubtedly topmost influence factor.Prior art is generally adopted Cr12MoV steel cylindrical die roll, and result of use is less than satisfactory, and its failure mode is often tipping.
Summary of the invention
It is an object of the invention to for Shortcomings part in above-mentioned technology, the present invention provides the Technology for Heating Processing of a kind of Novel steel cylindrical die roll, and hardness is higher, has good toughness and plasticity, reduces tipping defect, improves service life.
The technical scheme realizing the object of the invention is as follows:
The Technology for Heating Processing of a kind of Novel steel cylindrical die roll, is characterised by, adopts 9SiCr material, comprises the following steps that:
(1) preheating: in salt bath furnace, heating is to 580-600 DEG C, firing rate 30-50 DEG C/h, is incubated 50-80min；
(2) Quenching Treatment: heating-up temperature 850-860 DEG C, firing rate 20-30 DEG C/h；Insulation 30-60min, hardening heat 200～220 DEG C, time 2-2.5h, adopt salt made from earth containing a comparatively high percentage of sodium chloride cooling；
(3) first tempering: temperature 240-280 DEG C, are incubated 2-2.5h；
(4) second tempering: temperature 240-280 DEG C, are incubated 2-3h.
The present invention provides the Technology for Heating Processing of a kind of Novel steel cylindrical die roll, and hardness is higher, has good toughness and plasticity, reduces tipping defect, improves service life.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
The Technology for Heating Processing of a kind of Novel steel cylindrical die roll, adopts 9SiCr material, comprises the following steps that:
(1) preheating: in salt bath furnace, heating is to 590 DEG C, 35 DEG C/h of firing rate, is incubated 50-80min；
(2) Quenching Treatment: heating-up temperature 850 DEG C, 25 DEG C/h of firing rate；Insulation 50min, hardening heat 210 DEG C, time 2h, adopt salt made from earth containing a comparatively high percentage of sodium chloride cooling；
(3) first tempering: temperature 250 DEG C, are incubated 2h；
(4) second tempering: temperature 250 DEG C, are incubated 2.5h.
The Technology for Heating Processing of a kind of Novel steel cylindrical die roll of the present invention, can improve the case hardness of Cr12MoV steel cylindrical die roll, cutting toughness, improve service life.
The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work.All technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (1)
1. a Technology for Heating Processing for Novel steel cylindrical die roll, is characterised by, adopts 9SiCr material, comprises the following steps that:
(1) preheating: in salt bath furnace, heating is to 580-600 DEG C, firing rate 30-50 DEG C/h, is incubated 50-80min；
(2) Quenching Treatment: heating-up temperature 850-860 DEG C, firing rate 20-30 DEG C/h；Insulation 30-60min, hardening heat 200～220 DEG C, time 2-2.5h, adopt salt made from earth containing a comparatively high percentage of sodium chloride cooling；
(3) first tempering: temperature 240-280 DEG C, are incubated 2-2.5h；
(4) second tempering: temperature 240-280 DEG C, are incubated 2-3h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719498.7A CN105714090A (en) | 2014-12-03 | 2014-12-03 | New steel rolling wheel heat treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719498.7A CN105714090A (en) | 2014-12-03 | 2014-12-03 | New steel rolling wheel heat treatment technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105714090A true CN105714090A (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410719498.7A Pending CN105714090A (en) | 2014-12-03 | 2014-12-03 | New steel rolling wheel heat treatment technology |
Country Status (1)
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| CN (1) | CN105714090A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338060A (en) * | 2018-12-11 | 2019-02-15 | 重庆世潮机械有限公司 | A kind of cylindrical die roll process for preparing raw material |
| CN109385506A (en) * | 2018-12-11 | 2019-02-26 | 重庆世潮机械有限公司 | A kind of cylindrical die roll quenching technical |
-
2014
- 2014-12-03 CN CN201410719498.7A patent/CN105714090A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338060A (en) * | 2018-12-11 | 2019-02-15 | 重庆世潮机械有限公司 | A kind of cylindrical die roll process for preparing raw material |
| CN109385506A (en) * | 2018-12-11 | 2019-02-26 | 重庆世潮机械有限公司 | A kind of cylindrical die roll quenching technical |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160629 |
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| WD01 | Invention patent application deemed withdrawn after publication |