CN102605147A - Method for carrying out normalizing heat treatment by using waste heat from forging of forged piece - Google Patents
Method for carrying out normalizing heat treatment by using waste heat from forging of forged piece Download PDFInfo
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- CN102605147A CN102605147A CN2012100886795A CN201210088679A CN102605147A CN 102605147 A CN102605147 A CN 102605147A CN 2012100886795 A CN2012100886795 A CN 2012100886795A CN 201210088679 A CN201210088679 A CN 201210088679A CN 102605147 A CN102605147 A CN 102605147A
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Abstract
The invention relates to a method for carrying out normalizing heat treatment by using the waste heat from the forging of a forged piece, which comprises the following steps: making the final forging temperature of the forged piece be higher than the final forging temperature of the steel of the forged piece by controlling the final deformation and the final forging temperature of the forged piece during forging, cooling the forged piece to 650-700 DEG C in air, feeding into a hot treatment furnace to uniform the temperature so that the inside temperature and the outside temperature of the forge piece are same, heating to the temperature of above AC3 or ACm 60-65 DEG C or higher of the steel, preserving the temperature for austenitizing fully, discharging out of the hot treatment furnace, and cooling to the room temperature at a certain cooling speed. The method is suitable for the forged pieces made of low-carbon steel, medium-carbon structural steel and various low-alloy structural steel and is simple. Due to the adoption of the method, the metallurgical structure and the mechanical properties of the forged piece can be guaranteed, a large amount of energy consumed for heating the forged piece can be saved, and the production efficiency can be improved.
Description
Technical field
The present invention relates to a kind of heat treating method, specifically is to utilize waste heat behind the forging to carry out the method for normalizing treatment in a kind of production process of forging.
Background technology
At present, in the production process of forging, forging is processed needs normalizing heat treatment technique after the forging behind the type.Method in common is put into process furnace then and is heated to design temperature for to be cooled to room temperature to forging at present, and insulation is come out of the stove by setting the speed of cooling cooling.By this technology, forging need consume very many energy.Can not adapt to current energy-saving and emission-reduction, the trend of low-carbon (LC) life.
Summary of the invention
Technical problem to be solved by this invention provides a kind of forging normalizing heat treating method
of energy-saving and environmental protection.
Of the present invention a kind of utilize forging after waste heat carry out the normalizing heat-treating methods; It is characterized in that may further comprise the steps: through control forging last fiery forging deformation amount and the forged temperature of termination in forging process; Make forging stop the final forging temperature 20-30 ° of C that forged temperature is higher than this steel grade material; In air, be chilled to 650-700 ℃ soon, it is identical to send into heat treatment furnace samming to forging internal and external temperature again, is heated to above 30 ~ 60 ℃ of the Ac3 (or Acm) of this steel grade material then; After insulation reached complete austenitizing, the back of coming out of the stove was cooled to room temperature by certain speed of cooling.
Present method is applicable to soft steel, medium carbon structure iron and the made forging of various structural low.
The invention has the beneficial effects as follows: the forging waste heat that utilizes of the present invention is forged back normalizing heat treating method; Forging metallographic structure and mechanical property had both been guaranteed; Practiced thrift the energy that adds hot forging in a large number and consumed again, and method is simple, has improved production efficiency.
Description of drawings
Fig. 1 is thermal treatment process figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.
Like Fig. 1; A kind ofly utilize waste heat normalizing heat-treating methods behind the forging: through the control forging in forging process last fiery forging deformation amount with stop forged temperature; Make forging stop the final forging temperature 20-30 ° of C that forged temperature is higher than this steel grade material; In air, be chilled to 650-700 ℃ soon, it is identical to send into heat treatment furnace samming to forging internal and external temperature again, is heated to Ac3 (or Acm) above 30 ~ 60 ℃ or the higher temperature of this steel grade material then; After insulation reached complete austenitizing, the back of coming out of the stove was cooled to room temperature by certain speed of cooling.
The above only is a preferred implementation of the present invention, should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvement, and these improvement also should be regarded as protection scope of the present invention.
Claims (1)
- One kind utilize forging after waste heat carry out the normalizing heat-treating methods; It is characterized in that may further comprise the steps: through control forging last fiery forging deformation amount and the forged temperature of termination in forging process; Make forging stop the final forging temperature 20-30 ° of C that forged temperature is higher than this steel grade material; In air, be chilled to 650-700 ℃ soon, it is identical to send into heat treatment furnace samming to forging internal and external temperature again, is heated to Ac3 or Acm above 30 ~ 60 ℃ or the higher temperature of this steel grade material then; After insulation reached complete austenitizing, the back of coming out of the stove was cooled to room temperature by certain speed of cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100886795A CN102605147A (en) | 2012-03-30 | 2012-03-30 | Method for carrying out normalizing heat treatment by using waste heat from forging of forged piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100886795A CN102605147A (en) | 2012-03-30 | 2012-03-30 | Method for carrying out normalizing heat treatment by using waste heat from forging of forged piece |
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| CN102605147A true CN102605147A (en) | 2012-07-25 |
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| CN2012100886795A Pending CN102605147A (en) | 2012-03-30 | 2012-03-30 | Method for carrying out normalizing heat treatment by using waste heat from forging of forged piece |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103320584A (en) * | 2013-06-05 | 2013-09-25 | 衡阳市鹏润锻造有限公司 | Low-carbon alloy structural steel heat treatment method |
| CN105886717A (en) * | 2016-04-30 | 2016-08-24 | 王中忞 | Normalizing method for forging waste heat of steel |
| CN107058684A (en) * | 2017-03-20 | 2017-08-18 | 天津钢管集团股份有限公司 | A kind of Technology for Heating Processing after the rolling for 12Cr1MoVG Steel Tube Specials |
| CN107619912A (en) * | 2016-07-15 | 2018-01-23 | 万向钱潮股份有限公司 | Residual temperature normalizing process |
| CN109762975A (en) * | 2019-02-14 | 2019-05-17 | 浙江来福谐波传动股份有限公司 | A kind of heat treatment process more than strength steel forging molding process and positive annealed combination |
| CN113042667A (en) * | 2020-12-25 | 2021-06-29 | 江苏大洋精锻有限公司 | Warm forging operation process of steel forging |
| CN114921622A (en) * | 2022-05-06 | 2022-08-19 | 万向钱潮股份有限公司 | Closed forging and residual temperature normalizing process for automobile hub outer ring |
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| CN1900328A (en) * | 2005-07-19 | 2007-01-24 | 辽宁五一八内燃机配件有限公司 | Heat treatment process for large microalloyed medium carbon steel engine crankshaft |
| CN102080147A (en) * | 2010-12-04 | 2011-06-01 | 江苏飞船股份有限公司 | Process for forging cold working die and method for quenching at low temperature by using forging waste heat |
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- 2012-03-30 CN CN2012100886795A patent/CN102605147A/en active Pending
Patent Citations (2)
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| CN1900328A (en) * | 2005-07-19 | 2007-01-24 | 辽宁五一八内燃机配件有限公司 | Heat treatment process for large microalloyed medium carbon steel engine crankshaft |
| CN102080147A (en) * | 2010-12-04 | 2011-06-01 | 江苏飞船股份有限公司 | Process for forging cold working die and method for quenching at low temperature by using forging waste heat |
Non-Patent Citations (4)
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103320584A (en) * | 2013-06-05 | 2013-09-25 | 衡阳市鹏润锻造有限公司 | Low-carbon alloy structural steel heat treatment method |
| CN103320584B (en) * | 2013-06-05 | 2016-06-08 | 衡阳市鹏润锻造有限公司 | The heat treating method of a kind of low-carbon alloy structural steel |
| CN105886717A (en) * | 2016-04-30 | 2016-08-24 | 王中忞 | Normalizing method for forging waste heat of steel |
| CN107619912A (en) * | 2016-07-15 | 2018-01-23 | 万向钱潮股份有限公司 | Residual temperature normalizing process |
| CN107058684A (en) * | 2017-03-20 | 2017-08-18 | 天津钢管集团股份有限公司 | A kind of Technology for Heating Processing after the rolling for 12Cr1MoVG Steel Tube Specials |
| CN107058684B (en) * | 2017-03-20 | 2019-01-15 | 天津钢管集团股份有限公司 | It is a kind of for 12Cr1MoVG Steel Tube Special rolling after heat treatment process |
| CN109762975A (en) * | 2019-02-14 | 2019-05-17 | 浙江来福谐波传动股份有限公司 | A kind of heat treatment process more than strength steel forging molding process and positive annealed combination |
| CN109762975B (en) * | 2019-02-14 | 2021-05-25 | 浙江来福谐波传动股份有限公司 | Forging forming process and forward annealing combined heat treatment process for super-strength steel |
| CN113042667A (en) * | 2020-12-25 | 2021-06-29 | 江苏大洋精锻有限公司 | Warm forging operation process of steel forging |
| CN114921622A (en) * | 2022-05-06 | 2022-08-19 | 万向钱潮股份有限公司 | Closed forging and residual temperature normalizing process for automobile hub outer ring |
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Application publication date: 20120725 |