CN102978352A - Heat treatment method for improving impact toughness of 1Cr12Mo heat resistant steel - Google Patents
Heat treatment method for improving impact toughness of 1Cr12Mo heat resistant steel Download PDFInfo
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- CN102978352A CN102978352A CN2012105121060A CN201210512106A CN102978352A CN 102978352 A CN102978352 A CN 102978352A CN 2012105121060 A CN2012105121060 A CN 2012105121060A CN 201210512106 A CN201210512106 A CN 201210512106A CN 102978352 A CN102978352 A CN 102978352A
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Abstract
The invention provides a heat treatment method for improving impact toughness of 1Cr12Mo heat resistant steel. By adopting the heat treatment method, the impact toughness of blade materials or products formed by the blade materials can be effectively improved, so that the fatigue resistance of the whole blade of a turbine and the whole blade of a gas compressor can be improved, the service life of the blades can be prolonged, and the comprehensive mechanical performance of the material can be fully performed. The heat treatment method comprises the following steps in sequence: uniformly placing 1Cr12Mo blades into a common quenching charging basket based on the technology scheme; transferring the quenching charging basket into a heat treating quenching furnace for quenching and heating; and maintaining temperature and cooling in common mode. The heat treatment method is characterized in that the quenching is carried out at 900 to 940 DEG C.
Description
Technical field
The present invention relates to the thermal treatment process field of 1Cr12Mo high temperature steel, concrete a kind of heat treating method that improves the impelling strength of 1Cr12Mo high temperature steel.
Background technology
General 1Cr12Mo high temperature steel is mainly used in the processing vapor turbine blade, compressor blade, the thermal treatment process of conventional 1Cr12Mo material blade is blade to be put into general quenching charging basket again the quenching charging basket is put into the heat-treatment quenching stove and carry out quenching heat treatment, conventional quenching temperature is 950 ℃～1000 ℃, it often occurs impact value phenomenon on the low side usually after thermal treatment, thereby do not reach technical requirements, to cause turbine blade, the important performance indexes of the products such as compressor blade does not reach technical requirements, so that blade in adjusting operation process because impact value generation fatigue cracking on the low side, cause that blade destroys early, it is serious to the blade safety hazard.
Summary of the invention
For the problems referred to above, the present invention a kind of heat treating method that improves the impelling strength of 1Cr12Mo high temperature steel, the impelling strength of its energy Effective Raise blade material or its product, thereby improve the fatigue resistance of turbine blade, compressor blade integral body, prolong the work-ing life of blade, give full play to the comprehensive mechanical performance of this material.
Its technical scheme is such, the 1Cr12Mo material blade evenly is put in the general quenching charging basket according to process program, again described quenching charging basket is put into the heat-treatment quenching stove heat treated of quenching, again conventional insulation, cooling, it is characterized in that: described quenching temperature is 900 ℃～940 ℃.
It is further characterized in that:
Described quenching temperature is preferably 900 ℃.
After adopting technique of the present invention that the 1Cr12Mo material blade is heat-treated, because the low temperature quenching temperature makes grain refining, the intergranular carbide decreases, thereby can improve the impact index of blade material or other products more than 45%, can improve the fatigue resistance of turbine blade, compressor blade integral body, prolong the work-ing life of blade, give full play to the comprehensive mechanical performance of this material.
Embodiment
Embodiment one:
The 1Cr12Mo material blade evenly is put in the general quenching charging basket according to process program, more described quenching charging basket is put into the heat-treatment quenching stove heat treated of quenching, quenching temperature is 900 ℃, more conventional insulation, cooling.
Embodiment two:
The 1Cr12Mo material blade evenly is put in the general quenching charging basket according to process program, more described quenching charging basket is put into the heat-treatment quenching stove heat treated of quenching, quenching temperature is 940 ℃, more conventional insulation, cooling.
Embodiment three:
The 1Cr12Mo material blade evenly is put in the general quenching charging basket according to process program, more described quenching charging basket is put into the heat-treatment quenching stove heat treated of quenching, quenching temperature is 920 ℃, more conventional insulation, cooling.
Compare with conventional 1Cr12Mo material blade thermal treatment process, adopt the thermal treatment process rear blade impact value contrast of above-described embodiment to see the following form 1:
Table 1:
By data in the table 1 as can be known, adopt the thermal treatment process rear blade impact value of above-described embodiment to adopt prior heat treatment process rear blade impact value to be significantly improved.
Table 2 is heat-treated the stretching contrast at rear blade 1/4 thickness place and root center place for the 1Cr12Mo material blade adopts 900 ℃ of quenchings: table 2:
In table 1, the table 2, Rm is Tensile strength, and Rp0.2 is offset yield strength, and A is elongation after fracture, and Z is relative reduction in area, and KV impacts than V in the summer.
Claims (2)
1. heat treating method that improves the impelling strength of 1Cr12Mo high temperature steel, the 1Cr12Mo material blade evenly is put in the general quenching charging basket according to process program, again described quenching charging basket is put into the heat-treatment quenching stove heat treated of quenching, again conventional insulation, cooling, it is characterized in that: described quenching temperature is 900 ℃～940 ℃.
2. described a kind of heat treating method that improves the impelling strength of 1Cr12Mo high temperature steel according to claim 1, it is characterized in that: described quenching temperature is preferably 900 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105121060A CN102978352A (en) | 2012-12-04 | 2012-12-04 | Heat treatment method for improving impact toughness of 1Cr12Mo heat resistant steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105121060A CN102978352A (en) | 2012-12-04 | 2012-12-04 | Heat treatment method for improving impact toughness of 1Cr12Mo heat resistant steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102978352A true CN102978352A (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105121060A Pending CN102978352A (en) | 2012-12-04 | 2012-12-04 | Heat treatment method for improving impact toughness of 1Cr12Mo heat resistant steel |
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| CN (1) | CN102978352A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034798A (en) * | 2017-11-29 | 2018-05-15 | 无锡透平叶片有限公司 | A kind of heat treatment method of reduction 2Cr12Ni4Mo3VNbN turbine blade yield tensile ratios |
-
2012
- 2012-12-04 CN CN2012105121060A patent/CN102978352A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 夏冰等: "B50A947A3材料的热处理工艺探索", 《发电设备》 * |
| 贾维国等: "30万-60万千瓦汽轮机叶片用钢AISI403(1Cr12Mo)的研制", 《特殊钢》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034798A (en) * | 2017-11-29 | 2018-05-15 | 无锡透平叶片有限公司 | A kind of heat treatment method of reduction 2Cr12Ni4Mo3VNbN turbine blade yield tensile ratios |
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Application publication date: 20130320 |