CN103659208B - A kind of 4Cr13 ring forging dies technique - Google Patents
A kind of 4Cr13 ring forging dies technique Download PDFInfo
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- CN103659208B CN103659208B CN201310743584.7A CN201310743584A CN103659208B CN 103659208 B CN103659208 B CN 103659208B CN 201310743584 A CN201310743584 A CN 201310743584A CN 103659208 B CN103659208 B CN 103659208B
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- forging
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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
-
- 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
-
- 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
-
- 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
-
- 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 present invention relates to a kind of 4Cr13 ring forging dies technique, comprise operation: (1) cuts into ring mould blank 4Cr13 billet sawing machine; (2) heating furnace that furnace temperature is 650 DEG C is put into, preheating 3h; (3) 900 DEG C of insulation 2h are slowly heated to; (4) slowly heat 2h again, be warmed up to 1160 DEG C; (5) forging of coming out of the stove after 2h is incubated; (6) initial forging temperature 1140 DEG C, final forging temperature 900 DEG C; (7) forging 4 times are come and gone; (8) anneal immediately after finish-forging: be slowly warmed up to 880 DEG C of insulation 4h, after cooling to 650 DEG C with stove, be raised to 860 DEG C again, cool to 500 DEG C with the furnace after insulation 3h and come out of the stove.The present invention makes ring module knit more homogeneous, and service life extends 35 ~ 40% substantially.
Description
Technical field
The present invention relates to a kind of Forging Technology, refer in particular to a kind of Forging Technology of ring mould.
Background technology
Ring mould is the vital part of pellet processing key equipment ring die pelleter, and be also topmost consumable accessory, ring mould in use early-age crack occurs.The Forging Technology of current 4Cr13 ring mould is generally:
(1) 4Cr13 billet sawing machine is cut into ring mould blank;
(2) heating furnace that furnace temperature is 700 DEG C is put into, preheating 3h ~ 5h;
(3) slowly heat 3 ~ 4h, be warmed up to 1160 DEG C;
(4) forging of coming out of the stove after 2h is incubated;
(5) initial forging temperature 1140 DEG C, final forging temperature 900 DEG C;
(6) forging 4 times are come and gone;
(7) anneal immediately after finish-forging: be slowly warmed up to 880 DEG C of insulation 5h, after cooling to 660 DEG C with stove, be raised to 860 DEG C again, cool to 500 DEG C 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 coarse grain non-uniform phenomenon organized by the overall overheated blank that easily causes; In heating process because of non-uniform temperature also easily make forging overheated or local burning cause the homogenieity of coarse grains, forging stock poor.These are all the common causes causing ring mould to ftracture.
Summary of the invention
The object of the invention is to elimination 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 sawing machine is cut into ring mould blank;
(2) heating furnace that furnace temperature is 650 DEG C is put into, preheating 3h;
(3) slowly heat 2h, be warmed up to 1160 DEG C;
(4) forging of coming out of the stove after 2h is incubated;
(5) initial forging temperature 1140 DEG C, final forging temperature 900 DEG C;
(6) forging 4 times are come and gone;
(7) anneal immediately after finish-forging: be slowly warmed up to 880 DEG C of insulation 4h, after cooling to 650 DEG C with stove, be raised to 860 DEG C again, cool to 500 DEG C with the furnace after insulation 3h and come out of the stove.
Be characterized in: set up operation at described (2) procedure and (3) procedure: be slowly heated to 900 DEG C and be incubated 2h.
Test of many times more can make Cr compound be dissolved in tissue, organize more homogeneous after finding to increase this operation, reduces and organizes coarse grain non-uniform phenomenon.
Especially operation is set up at (1) procedure with (2) procedure: put into heating furnace together with ring mould blank to be placed on after on metal bulkhead frame again, to ensure spacing distance >=20mm that ring mould blank is mutual 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.
Detailed description of the invention
4Cr13 ring forging dies technique of the present invention, coarse grain is organized for reducing, following improvement is done to existing Forging Technology: just blank is put into stove when furnace temperature 650 DEG C, 900 DEG C of insulation 2h are first slowly heated to after preheating 3h, and then slowly, heating, is warmed up to 1160 DEG C, forging of coming out of the stove after insulation 2h; Cr compound so more can be made to be dissolved in tissue, to 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 sawing machine is cut into ring mould blank;
(2) heating furnace that furnace temperature is 650 DEG C is put into, preheating 3h;
(3) 900 DEG C of insulation 2h are slowly heated to;
(4) slowly heat 2h again, be warmed up to 1160 DEG C;
(5) forging of coming out of the stove after 2h is incubated;
(6) initial forging temperature 1140 DEG C, final forging temperature 900 DEG C;
(7) forging 4 times are come and gone;
(8) anneal immediately after finish-forging: be slowly warmed up to 880 DEG C of insulation 4h, after cooling to 650 DEG C with stove, be raised to 860 DEG C again, cool to 500 DEG C with the furnace after insulation 3h and come out of the stove.
Adopt above-mentioned technique, cool to less than 660 DEG C during annealing with stove, be preferably raised to 860 DEG C again after 650 DEG C, cool to 500 DEG C with the furnace after insulation 3h and come out of the stove, effect is better.
In addition, being heated evenly to improve blank in stove, ring mould blank being placed on after on metal bulkhead frame and putting into heating furnace together again, to ensure spacing distance >=20mm that ring mould blank is mutual in stove, the homogenieity of forging stock is better.
In addition, the ring mould in actual use containing Cr amount about 12% measures the ring mould of 14% under other processes identical condition than containing Cr service life, reduces more than 1/3 its service life; So the source of ring mould quality is from blank, not only will guarantee Cr content 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.
The ring module adopting above-mentioned implementation column to manufacture experimently knits more homogeneous, and service life extends 35 ~ 40% substantially.
Claims (3)
1. a 4Cr13 ring forging dies technique, comprises following operation:
(1) 4Cr13 billet sawing machine is cut into ring mould blank;
(2) heating furnace that furnace temperature is 650 DEG C is put into, preheating 3h;
(3) slowly heat 2h, be warmed up to 1160 DEG C;
(4) forging of coming out of the stove after 2h is incubated;
(5) initial forging temperature 1140 DEG C, final forging temperature 900 DEG C;
(6) forging 4 times are come and gone;
(7) anneal immediately after finish-forging: be slowly warmed up to 880 DEG C of insulation 4h, after cooling to 650 DEG C with stove, be raised to 860 DEG C again, cool to 500 DEG C with the furnace after insulation 3h and come out of the stove;
It is characterized in that: between described (2) procedure and (3) procedure, set up operation: be slowly heated to 900 DEG C and be incubated 2h.
2. ring forging dies technique as claimed in claim 1, it is characterized in that: described (1) procedure sets up operation with (2) procedure: together with ring mould blank to be placed on after on metal bulkhead frame again, put into heating furnace, to ensure spacing distance >=20mm that ring mould blank is mutual 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.
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| 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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| CN201310743584.7A CN103659208B (en) | 2013-12-31 | 2013-12-31 | A kind of 4Cr13 ring forging dies technique |
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| Publication Number | Publication Date |
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| CN103659208A CN103659208A (en) | 2014-03-26 |
| CN103659208B true CN103659208B (en) | 2016-02-10 |
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| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN112536407B (en) * | 2020-11-20 | 2022-11-01 | 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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| CN103659208A (en) | 2014-03-26 |
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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. |