CN103659208A - Forging technology for 4Cr13 circular mold - Google Patents
Forging technology for 4Cr13 circular mold Download PDFInfo
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- CN103659208A CN103659208A CN201310743584.7A CN201310743584A CN103659208A CN 103659208 A CN103659208 A CN 103659208A CN 201310743584 A CN201310743584 A CN 201310743584A CN 103659208 A CN103659208 A CN 103659208A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
The invention relates to a forging technology for a 4Cr13 circular mold. The forging technology comprises the working processes: (1) cutting 4Cr13 round ingots into circular mold blanks through a sawing machine; (2) placing the circular mold blanks into a heating furnace with the furnace temperature being 650 DEG C, and conducting preheating for 3h; (3) conducting slow heating to the temperature of 900 DEG C, and keeping the temperature for 2h; (4) then conducting slow heating for 2h, and raising the temperature to 1160 DEG C; (5) keeping the temperature for 2h, and then discharging the blanks out of the furnace for forging; (6) adjusting the temperature of beginning forging to be 1140 DEG C and the temperature of finish forging to be 900 DEG C; (7) conducting forging four times repeatedly; (8) after forging, immediately conducting annealing, wherein the temperature is slowly raised to 880DEG C and kept for 4h, the temperature is decreased to be 650 DEG C with the furnace and then is raised to be 860 DEG C, the temperature is kept for 3h, and then the blanks are cooled to the temperature of 500 DEG C with the furnace and then discharged out of the furnace. According to the forging technology, the circular mold is more homogeneous in texture, and the service life of the circular mold is basically prolonged by 35-40%.
Description
Technical field
The present invention relates to a kind of Forging Technology, refer in particular to a kind of Forging Technology of encircling mould.
Background technology
Ring mould is the vital part of pellet processing key equipment ring die pelleter, is also topmost consumable accessory, and early stage cracking in use occurs ring mould.The Forging Technology of 4Cr13 ring mould is generally at present:
(1) 4Cr13 billet is cut into ring mould blank with sawing machine;
(2) putting into furnace temperature is the heating furnace of 700 ℃, preheating 3h～5h;
(3) slowly heat 3～4 h, be warmed up to 1160 ℃;
(4) the insulation forging of coming out of the stove after 2h;
(5) initial forging temperature is 1 140 ℃, 900 ℃ of final forging temperatures;
(6) come and go and forge 4 times;
(7) annealing immediately after finish-forging: be slowly warmed up to 880 ℃ of insulation 5h, be raised to again 860 ℃ after cooling to 660 ℃ with stove, cool to 500 ℃ with the furnace after insulation 3h and come out of the stove.
In forging process, the control of furnace temperature and time is improper, and the whole overheated blank that easily causes is organized coarse grain non-uniform phenomenon; In heating process, because also easily making the overheated or local burning of forging, non-uniform temperature cause the homogenieity of coarse grains, forging stock poor.These are all the common causes that causes ring mould cracking.
Summary of the invention
The object of the invention is to eliminate and organize coarse grain non-uniform phenomenon, improve the homogenieity of forging stock, extend the service life of ring mould.
For reaching above-mentioned purpose, 4Cr13 ring forging dies technique of the present invention, comprises following operation:
(1) 4Cr13 billet is cut into ring mould blank with sawing machine;
(2) putting into furnace temperature is the heating furnace of 650 ℃, preheating 3h;
(3) slowly heat 2 h, be warmed up to 1160 ℃;
(4) the insulation forging of coming out of the stove after 2h;
(5) initial forging temperature is 1 140 ℃, 900 ℃ of final forging temperatures;
(6) come and go and forge 4 times;
(7) annealing immediately after finish-forging: be slowly warmed up to 880 ℃ of insulation 4h, be raised to again 860 ℃ after cooling to 650 ℃ with stove, cool to 500 ℃ with the furnace after insulation 3h and come out of the stove.
Be characterized in: at described (2) procedure and (3) procedure, set up operation: be slowly heated to 900 ℃ of insulation 2h.
Test of many times is found to increase after this operation, more can make Cr compound be dissolved in tissue, organizes more homogeneous, reduces and organizes coarse grain non-uniform phenomenon.
Especially at (1) procedure, set up operation with (2) procedure: after ring mould blank is placed on metal bulkhead frame, put into heating furnace together with again, to guarantee to encircle mould blank mutual spacing distance >=20mm in stove, the homogenieity of forging stock is better.
The blank of 4Cr13 ring mould: preferably 4Cr13 billet chemical composition is: C content≤0.36～0.45, Cr content 13～14, Si content≤0.60, Mn content≤0.80, S content≤0.03, P content≤0.035.
The specific embodiment
4Cr13 ring forging dies technique of the present invention, for reducing, organize coarse grain, existing Forging Technology has been done to following improvement: when 650 ℃ of furnace temperature, just blank is put into stove, after preheating 3h, be first slowly heated to 900 ℃ of insulation 2h, and then slowly, heating, is warmed up to 1160 ℃, the forging of coming out of the stove after insulation 2h; So more can make Cr compound be dissolved in tissue, organize more homogeneous, reduce and organize coarse grain non-uniform phenomenon.
Concrete enforcement 4Cr13 ring of the present invention forging dies technique is:
(1) 4Cr13 billet is cut into ring mould blank with sawing machine;
(2) putting into furnace temperature is the heating furnace of 650 ℃, preheating 3h;
(3) be slowly heated to 900 ℃ of insulation 2h;
(4) slowly heat again 2 h, be warmed up to 1160 ℃;
(5) the insulation forging of coming out of the stove after 2h;
(6) initial forging temperature is 1 140 ℃, 900 ℃ of final forging temperatures;
(7) come and go and forge 4 times;
(8) annealing immediately after finish-forging: be slowly warmed up to 880 ℃ of insulation 4h, be raised to again 860 ℃ after cooling to 650 ℃ with stove, cool to 500 ℃ with the furnace after insulation 3h and come out of the stove.
Adopt above-mentioned technique, during annealing, with stove, cool to below 660 ℃, be preferably raised to 860 ℃ after 650 ℃ again, cool to 500 ℃ with the furnace and come out of the stove after insulation 3h, effect is better.
In addition, in order to improve blank in stove, be heated evenly, put into together heating furnace after ring mould blank is placed on metal bulkhead frame again, to guarantee to encircle mould blank mutual spacing distance >=20mm in stove, the homogenieity of forging stock is better.
In addition, than processing under identical condition at other containing the ring mould of Cr amount 14%, reduce more than 1/3 ring mould service life of measuring 12% left and right containing Cr in actual use its service life; So the source of ring mould quality is from blank, not only will guarantee that Cr content is more than 13%, also preferred blank chemical component is C content≤0.36～0.45, Cr content 12～14, Si content≤0.60, Mn content≤0.80, S content≤0.03, P content≤0.035.
Adopt the ring module of above-mentioned implementation column trial-production to knit more homogeneous, substantially extend 35～40% service life.
Claims (3)
1. 4Cr13 encircles a forging dies technique, comprises following operation:
(1) 4Cr13 billet is cut into ring mould blank with sawing machine;
(2) putting into furnace temperature is the heating furnace of 650 ℃, preheating 3h;
(3) slowly heat 2 h, be warmed up to 1160 ℃;
(4) the insulation forging of coming out of the stove after 2h;
(5) initial forging temperature is 1 140 ℃, 900 ℃ of final forging temperatures;
(6) come and go and forge 4 times;
(7) annealing immediately after finish-forging: be slowly warmed up to 880 ℃ of insulation 4h, be raised to again 860 ℃ after cooling to 650 ℃ with stove, cool to 500 ℃ with the furnace after insulation 3h and come out of the stove;
It is characterized in that: at described (2) procedure and (3) procedure, set up operation: be slowly heated to 900 ℃ of insulation 2h.
2. ring forging dies technique as claimed in claim 1, it is characterized in that: described (1) procedure is set up operation with (2) procedure: after ring mould blank is placed on metal bulkhead frame, put into heating furnace together with again, to guarantee to encircle mould blank mutual spacing distance >=20mm in stove.
3. ring forging dies technique as claimed in claim 1, is characterized in that: the chemical composition of described 4Cr13 billet is: C content≤0.36～0.45, Cr content 13～14, Si content≤0.60, Mn content≤0.80, S content≤0.03, P content≤0.035.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743584.7A CN103659208B (en) | 2013-12-31 | 2013-12-31 | A kind of 4Cr13 ring forging dies technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743584.7A CN103659208B (en) | 2013-12-31 | 2013-12-31 | A kind of 4Cr13 ring forging dies technique |
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| CN103659208A true CN103659208A (en) | 2014-03-26 |
| CN103659208B CN103659208B (en) | 2016-02-10 |
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| CN201310743584.7A Active CN103659208B (en) | 2013-12-31 | 2013-12-31 | A kind of 4Cr13 ring forging dies technique |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522088A (en) * | 2016-01-19 | 2016-04-27 | 溧阳市金昆锻压有限公司 | Die forging process of granulator spindle |
| CN105522087A (en) * | 2016-01-19 | 2016-04-27 | 溧阳市金昆锻压有限公司 | Die forging process of granulator press roll |
| CN105543452A (en) * | 2016-01-19 | 2016-05-04 | 溧阳市金昆锻压有限公司 | Annealing technology of 4Cr13 circular mould |
| CN106086343A (en) * | 2016-07-28 | 2016-11-09 | 柳州科尔特锻造机械有限公司 | A kind of high-boron wear-resistant alloy steel heating in the forging |
| CN106222376A (en) * | 2016-07-28 | 2016-12-14 | 柳州科尔特锻造机械有限公司 | A kind of AZ80 magnesium alloy steel heating in the forging |
| CN106238636A (en) * | 2016-07-28 | 2016-12-21 | 柳州科尔特锻造机械有限公司 | A kind of titanium micro-alloyed steel heating in the forging |
| CN107377840A (en) * | 2017-09-08 | 2017-11-24 | 太仓森楚源机械设备有限公司 | A kind of forging technology of high tenacity stamping parts |
| CN112496219A (en) * | 2020-11-23 | 2021-03-16 | 苏州市吴中不锈钢有限公司 | Manufacturing and processing method of 4J32 alloy ring piece |
| CN112536407A (en) * | 2020-11-20 | 2021-03-23 | 遵义航天新力精密铸锻有限公司 | Forging process for bearing ring of aircraft engine |
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|---|---|---|---|---|
| EP0388892A1 (en) * | 1989-03-20 | 1990-09-26 | Mitsubishi Materials Corporation | Method for plastic-working ingots of heat-resistant alloy containing boron |
| EP1067206A2 (en) * | 1999-07-09 | 2001-01-10 | Hitachi, Ltd. | Steam turbine blade, and steam turbine and steam turbine power plant using the same |
| CN102899460A (en) * | 2012-10-24 | 2013-01-30 | 攀钢集团江油长城特殊钢有限公司 | Heat treatment method for martensitic stainless steel forging module |
| CN102912248A (en) * | 2012-10-13 | 2013-02-06 | 山东理工大学 | High-toughness wear resistant martensitic stainless steel and production method thereof |
| CN103243203A (en) * | 2013-05-02 | 2013-08-14 | 马鞍山市晨旭机械制造有限公司 | Heat treatment process of 4Cr13 stainless steel granulator circular mould |
-
2013
- 2013-12-31 CN CN201310743584.7A patent/CN103659208B/en active Active
Patent Citations (5)
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| EP0388892A1 (en) * | 1989-03-20 | 1990-09-26 | Mitsubishi Materials Corporation | Method for plastic-working ingots of heat-resistant alloy containing boron |
| EP1067206A2 (en) * | 1999-07-09 | 2001-01-10 | Hitachi, Ltd. | Steam turbine blade, and steam turbine and steam turbine power plant using the same |
| CN102912248A (en) * | 2012-10-13 | 2013-02-06 | 山东理工大学 | High-toughness wear resistant martensitic stainless steel and production method thereof |
| CN102899460A (en) * | 2012-10-24 | 2013-01-30 | 攀钢集团江油长城特殊钢有限公司 | Heat treatment method for martensitic stainless steel forging module |
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Non-Patent Citations (1)
| Title |
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| 《中国航空材料手册》编辑委员会: "《中国航空材料手册》", 30 September 2001 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522088A (en) * | 2016-01-19 | 2016-04-27 | 溧阳市金昆锻压有限公司 | Die forging process of granulator spindle |
| CN105522087A (en) * | 2016-01-19 | 2016-04-27 | 溧阳市金昆锻压有限公司 | Die forging process of granulator press roll |
| CN105543452A (en) * | 2016-01-19 | 2016-05-04 | 溧阳市金昆锻压有限公司 | Annealing technology of 4Cr13 circular mould |
| CN106086343A (en) * | 2016-07-28 | 2016-11-09 | 柳州科尔特锻造机械有限公司 | A kind of high-boron wear-resistant alloy steel heating in the forging |
| CN106222376A (en) * | 2016-07-28 | 2016-12-14 | 柳州科尔特锻造机械有限公司 | A kind of AZ80 magnesium alloy steel heating in the forging |
| CN106238636A (en) * | 2016-07-28 | 2016-12-21 | 柳州科尔特锻造机械有限公司 | A kind of titanium micro-alloyed steel heating in the forging |
| CN107377840A (en) * | 2017-09-08 | 2017-11-24 | 太仓森楚源机械设备有限公司 | A kind of forging technology of high tenacity stamping parts |
| CN112536407A (en) * | 2020-11-20 | 2021-03-23 | 遵义航天新力精密铸锻有限公司 | Forging process for bearing ring of aircraft engine |
| CN112496219A (en) * | 2020-11-23 | 2021-03-16 | 苏州市吴中不锈钢有限公司 | Manufacturing and processing method of 4J32 alloy ring piece |
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| Publication number | Publication date |
|---|---|
| CN103659208B (en) | 2016-02-10 |
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Address after: 213300, No. 2008 Ling Ling West Road, Changzhou, Jiangsu, Liyang Patentee after: Jiangsu Jinyuan High-end Equipment Co., Ltd. Address before: 213300, No. 2008 Ling Ling West Road, Changzhou, Jiangsu, Liyang Patentee before: Jiangsu Jinyuan Forging Co., Ltd. |
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Address after: 213300 No. 8, Zhongguancun Avenue, Liyang, Jiangsu Patentee after: Jiangsu Jinyuan High-end Equipment Co., Ltd. Address before: 213300, No. 2008 Ling Ling West Road, Changzhou, Jiangsu, Liyang Patentee before: Jiangsu Jinyuan High-end Equipment Co., Ltd. |