CN104451072A - Heat treatment method of 14Cr17Ni2 stainless steel - Google Patents
Heat treatment method of 14Cr17Ni2 stainless steel Download PDFInfo
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- CN104451072A CN104451072A CN201410644242.4A CN201410644242A CN104451072A CN 104451072 A CN104451072 A CN 104451072A CN 201410644242 A CN201410644242 A CN 201410644242A CN 104451072 A CN104451072 A CN 104451072A
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- Prior art keywords
- stainless steel
- 14cr17ni2
- treatment method
- heat treatment
- stove
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 16
- 239000010935 stainless steel Substances 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 title abstract 9
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000005336 cracking Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a heat treatment method of 14Cr17Ni2 stainless steel. The heat treatment method of the 14Cr17Ni2 stainless steel comprises the following steps: (1) heating a stainless steel workpiece to 750-790 DEG C in a heating furnace, preserving heat for 2-10 hours, taking the stainless steel workpiece out of the heating furnace, and cooling to room temperature at the speed of 500-800 DEG C per hour; (2) heating the stainless steel workpiece treated in the step (1) to 650-700 DEG C once again, preserving heat for 7-9 hours, taking the stainless steel workpiece out of the heating furnace, and cooling naturally in air. The hardness of the stainless steel processed by adopting the heat treatment method disclosed by the invention can be significantly reduced by about 20%, the cracking can be decreased, and the cold workability can be improved.
Description
Technical field
The invention belongs to stainless steel field, be specifically related to the stainless heat treating method of a kind of 14Cr17Ni2.
Background technology
The good a kind of steel grade of strength and toughness collocation in 14Cr17Ni2 system Martensite Stainless Steel.It has good solidity to corrosion to the aqueous solution of oxidizing acid, most of organic acid and organic salt.Generally be suitable for manufacturing nitric acid, acetic acid production and light industry, in the industry such as weaving, not only require obdurability but also corrosion resistant axle, piston rod, the parts such as pump.But the stainless cold-forming property of 14Cr17Ni2 is poor, easy to crack.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides the stainless heat treating method of a kind of 14Cr17Ni2.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The stainless heat treating method of a kind of 14Cr17Ni2, comprises the steps:
(1) stainless steel work-piece is heated to 750-790 DEG C in process furnace, is incubated after 2-10 hour, comes out of the stove, with the speed of cooling of 500-800 DEG C/h, be cooled to room temperature;
(2) workpiece after step (1) being processed is being heated to 650-700 DEG C again, is incubated after 7-9 hour, comes out of the stove, in atmosphere naturally cooling.
Can obviously reduce stainless steel hardness about 20% after adopting heat treating method of the present invention, reduce cracking, improve the cold-forming property of workpiece.
Embodiment
Below in conjunction with preferred embodiment, the present invention will be described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
embodiment 1
The 14Cr17Ni2 stainless steel tube of φ 30mm is added in resistance furnace, rises to 750 DEG C with stove, be incubated after 8 hours, come out of the stove, use blower fan air blast, make workpiece be quickly cooled to room temperature in 1 hour.Cooled workpiece is added in resistance furnace again, is heated to 650 DEG C, be incubated after 8 hours, come out of the stove, in atmosphere naturally cooling.After process, the average hardness (HB) of workpiece is 189.
embodiment 2
14Cr17Ni2 stainless steel work-piece is added in resistance furnace, rises to 790 DEG C with stove, be incubated after 7 hours, come out of the stove, use blower fan air blast, make workpiece be quickly cooled to room temperature in 1 ~ 1.5 hour.Cooled workpiece is added in resistance furnace again, is heated to 700 DEG C, be incubated after 7 hours, come out of the stove, in atmosphere naturally cooling.After process, the average hardness (HB) of workpiece is 191.
Comparative example
14Cr17Ni2 stainless steel tube with embodiment 1 same specification is added in resistance furnace, rises to 750 DEG C with stove, be incubated after 8 hours, come out of the stove, naturally cooling in air, then workpiece is added in resistance furnace be heated to 680 DEG C, be incubated and come out of the stove after 8 hours, naturally cooling in atmosphere.After process, the average hardness (HB) of workpiece is 234.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. the stainless heat treating method of 14Cr17Ni2, comprises the steps:
(1) stainless steel work-piece is heated to 750-790 DEG C in process furnace, is incubated after 2-10 hour, comes out of the stove, with the speed of cooling of 500-800 DEG C/h, be cooled to room temperature;
(2) workpiece after step (1) being processed is being heated to 650-700 DEG C again, is incubated after 7-9 hour, comes out of the stove, in atmosphere naturally cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644242.4A CN104451072A (en) | 2014-11-14 | 2014-11-14 | Heat treatment method of 14Cr17Ni2 stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644242.4A CN104451072A (en) | 2014-11-14 | 2014-11-14 | Heat treatment method of 14Cr17Ni2 stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104451072A true CN104451072A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410644242.4A Pending CN104451072A (en) | 2014-11-14 | 2014-11-14 | Heat treatment method of 14Cr17Ni2 stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104451072A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609238A (en) * | 2004-09-17 | 2005-04-27 | 宝钢集团上海五钢有限公司 | Softening annealing heat treating method for 1Cr17Ni2 stainless steel |
| CN101509056A (en) * | 2008-04-08 | 2009-08-19 | 东北大学 | Thermal treatment method for precipitation hardening of martensitic stainless steel FV520B |
-
2014
- 2014-11-14 CN CN201410644242.4A patent/CN104451072A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609238A (en) * | 2004-09-17 | 2005-04-27 | 宝钢集团上海五钢有限公司 | Softening annealing heat treating method for 1Cr17Ni2 stainless steel |
| CN101509056A (en) * | 2008-04-08 | 2009-08-19 | 东北大学 | Thermal treatment method for precipitation hardening of martensitic stainless steel FV520B |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |