CN106077415A - A kind of Forging Technology of nuclear island spindle - Google Patents
A kind of Forging Technology of nuclear island spindle Download PDFInfo
- Publication number
- CN106077415A CN106077415A CN201610706819.9A CN201610706819A CN106077415A CN 106077415 A CN106077415 A CN 106077415A CN 201610706819 A CN201610706819 A CN 201610706819A CN 106077415 A CN106077415 A CN 106077415A
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- CN
- China
- Prior art keywords
- forging
- circular arc
- ratio
- swage block
- convex surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/06—Hammers tups; Anvils; Anvil blocks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses the Forging Technology of a kind of nuclear island spindle, comprise the following steps: (1) preheats.(2) being heated slowly to 1250 ~ 1280 DEG C, insulation 5 ~ 6 is little;(3) forging.(4) second time heating.(5) forging forming.(6) annealing immediately after finish-forging: be slowly warmed up to 950 ~ 980 DEG C and be incubated 5 ~ 8 hours, be raised again to 860 DEG C after cooling to 650 DEG C with stove, then by forging air cooling to room temperature.The Forging Technology of the nuclear island spindle of the present invention passes through jumping-up, pulling on the circular arc recessed swage block of dentation epirelief, and internal modification is uniform, it is possible to the ultrasonic examination reaching relevant requires and grain size requirement, it is ensured that the security reliability of nuclear island spindle.
Description
Technical field
The invention belongs to technical field of forging, particularly relate to the Forging Technology of a kind of nuclear island spindle.
Background technology
Along with developing rapidly of nuclear power industry, the manufacturing process of each key equipment in nuclear island is the most actively studied by China.
Nuclear island spindle is as important composition parts in nuclear power station, and its safety is most important.How to improve the intensity of nuclear island spindle, toughness
It is the problem that China core staff must solve with corrosion resistance.
Summary of the invention
The purpose of the present invention is in order to solve above-mentioned technical problem, it is provided that the Forging Technology of a kind of nuclear island spindle, and its feature exists
In: include following operation:
1) blank steel ingot is put into the heating furnace that furnace temperature is 600 DEG C, preheat 3h;
2) the first fire: be heated slowly to 1250 ~ 1280 DEG C, be incubated 5 ~ 6 hours;
3) forging, carries out twice upsetting pull to the steel ingot after heating, it is ensured that the ratio of upsetting pull for the first time is: 1.3≤upsetting on 8MN hydraulic press
Thick ratio≤1.5,1.1≤pulling ratio≤1.3, the ratio of upsetting pull for the second time is: 1.0≤upset ratio≤1.2,0.8≤pulling ratio≤1.0;
4) the second fire, heating-up temperature to 1050 ~ 1100 DEG C, be incubated 2 ~ 3 hours;
5) by the steel ingot of gained in step (4) on the circular arc recessed swage block of dentation epirelief jumping-up, be drawn into and meet the forging of size;
6) annealing immediately after finish-forging: be slowly warmed up to 950 ~ 980 DEG C and be incubated 5 ~ 8 hours, be raised again to after cooling to 650 DEG C with stove
860 DEG C, then by forging air cooling to room temperature;
The described circular arc recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is that both sides conical surface projection sets to centre
It is set to the arc convex surface of the two or more equal radii protruded, and smooth excessively by circular arc camber between adjacent circular arc convex surface, under
Swage block is the arc convex surface that the V-type conical surface is recessed to that centre is arranged to the two or more equal radii of protrusion, adjacent arc convex surface
Between smooth excessively by circular arc camber, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, described both sides
Conical surface angle and V-type conical surface angle equal be all that α, α can change within the scope of 135 °~155 °.
Compared with prior art, the invention have the advantage that to have internal modification uniform, it is possible to the ultrasound wave reaching relevant is visited
Wound requires and grain size requirement, and the intensity of forging, toughness and corrosion resistance are greatly improved.
Detailed description of the invention
Embodiment one
A kind of Forging Technology of nuclear island spindle, it is characterised in that: include following operation:
1) blank steel ingot is put into the heating furnace that furnace temperature is 600 DEG C, preheat 3h;
2) the first fire: be heated slowly to 1250 DEG C, be incubated 5 hours;
3) forging, carries out twice upsetting pull to the steel ingot after heating, it is ensured that the ratio of upsetting pull for the first time is: upset ratio on 8MN hydraulic press
1.35, pull out ratio 1, the ratio of upsetting pull for the second time is: 1.0, pulls out ratio 0.8;
4) the second fire, heating-up temperature to 1050 DEG C, be incubated 2 hours;
5) by the steel ingot of gained in step (4) on the circular arc recessed swage block of dentation epirelief jumping-up, be drawn into and meet the forging of size;
6) annealing immediately after finish-forging: be slowly warmed up to 950 DEG C and be incubated 5 hours, be raised again to 860 DEG C after cooling to 650 DEG C with stove,
Then by forging air cooling to room temperature;
The described circular arc recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is that both sides conical surface projection sets to centre
It is set to the arc convex surface of the two or more equal radii protruded, and smooth excessively by circular arc camber between adjacent circular arc convex surface, under
Swage block is the arc convex surface that the V-type conical surface is recessed to that centre is arranged to the two or more equal radii of protrusion, adjacent arc convex surface
Between smooth excessively by circular arc camber, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, described both sides
Conical surface angle and V-type conical surface angle equal be all α, α be 135 °.
Embodiment two
A kind of Forging Technology of nuclear island spindle, it is characterised in that: include following operation:
1) blank steel ingot is put into the heating furnace that furnace temperature is 600 DEG C, preheat 3h;
2) the first fire: be heated slowly to 1260 DEG C, be incubated 5.5 hours;
3) forging, carries out twice upsetting pull to the steel ingot after heating, it is ensured that the ratio of upsetting pull for the first time is: upset ratio on 8MN hydraulic press
≤ 1.4, pull out ratio 1.2, the ratio of upsetting pull for the second time is: upset ratio 1.1, pulls out ratio 0.9;
4) the second fire, heating-up temperature to 10909 DEG C, be incubated 2.5 hours;
5) by the steel ingot of gained in step (4) on the circular arc recessed swage block of dentation epirelief jumping-up, be drawn into and meet the forging of size;
6) annealing immediately after finish-forging: be slowly warmed up to 960 DEG C and be incubated 7 hours, be raised again to 860 DEG C after cooling to 650 DEG C with stove,
Then by forging air cooling to room temperature;
The described circular arc recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is that both sides conical surface projection sets to centre
It is set to the arc convex surface of the two or more equal radii protruded, and smooth excessively by circular arc camber between adjacent circular arc convex surface, under
Swage block is the arc convex surface that the V-type conical surface is recessed to that centre is arranged to the two or more equal radii of protrusion, adjacent arc convex surface
Between smooth excessively by circular arc camber, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, described both sides
Conical surface angle and V-type conical surface angle equal be all α, α be 145 °.
Embodiment three
A kind of Forging Technology of nuclear island spindle, it is characterised in that: include following operation:
1) blank steel ingot is put into the heating furnace that furnace temperature is 600 DEG C, preheat 3h;
2) the first fire: be heated slowly to 1280 DEG C, be incubated 6 hours;
3) forging, carries out twice upsetting pull to the steel ingot after heating, it is ensured that the ratio of upsetting pull for the first time is: upset ratio on 8MN hydraulic press
1.5, pull out ratio 1.3, the ratio of upsetting pull for the second time is: upset ratio 1.2, pulls out ratio 1.0;
4) the second fire, heating-up temperature to 1100 DEG C, be incubated 3 hours;
5) by the steel ingot of gained in step (4) on the circular arc recessed swage block of dentation epirelief jumping-up, be drawn into and meet the forging of size;
6) annealing immediately after finish-forging: be slowly warmed up to 980 DEG C and be incubated 8 hours, be raised again to 860 DEG C after cooling to 650 DEG C with stove,
Then by forging air cooling to room temperature;
The described circular arc recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is that both sides conical surface projection sets to centre
It is set to the arc convex surface of the two or more equal radii protruded, and smooth excessively by circular arc camber between adjacent circular arc convex surface, under
Swage block is the arc convex surface that the V-type conical surface is recessed to that centre is arranged to the two or more equal radii of protrusion, adjacent arc convex surface
Between smooth excessively by circular arc camber, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, described both sides
Conical surface angle and V-type conical surface angle equal be all α, α be 155 °.
Claims (1)
1. the Forging Technology of a nuclear island spindle, it is characterised in that: include following operation:
1) blank steel ingot is put into the heating furnace that furnace temperature is 600 DEG C, preheat 3h;
2) the first fire: be heated slowly to 1250 ~ 1280 DEG C, be incubated 5 ~ 6 hours;
3) forging, carries out twice upsetting pull to the steel ingot after heating, it is ensured that the ratio of upsetting pull for the first time is: 1.3≤upsetting on 8MN hydraulic press
Thick ratio≤1.5,1.1≤pulling ratio≤1.3, the ratio of upsetting pull for the second time is: 1.0≤upset ratio≤1.2,0.8≤pulling ratio≤1.0;
Second fire, heating-up temperature to 1050 ~ 1100 DEG C, it is incubated 2 ~ 3 hours;
By the steel ingot of gained in step (4) on the circular arc recessed swage block of dentation epirelief jumping-up, be drawn into and meet the forging of size;
Annealing immediately after finish-forging: be slowly warmed up to 950 ~ 980 DEG C and be incubated 5 ~ 8 hours, be raised again to 860 after cooling to 650 DEG C with stove
DEG C, then by forging air cooling to room temperature;
The described circular arc recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is that both sides conical surface projection sets to centre
It is set to the arc convex surface of the two or more equal radii protruded, and smooth excessively by circular arc camber between adjacent circular arc convex surface, under
Swage block is the arc convex surface that the V-type conical surface is recessed to that centre is arranged to the two or more equal radii of protrusion, adjacent arc convex surface
Between smooth excessively by circular arc camber, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, described both sides
Conical surface angle and V-type conical surface angle equal be all that α, α can change within the scope of 135 °~155 °.
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CN201610706819.9A CN106077415B (en) | 2016-08-24 | 2016-08-24 | A kind of forging technology of nuclear island spindle |
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CN201610706819.9A CN106077415B (en) | 2016-08-24 | 2016-08-24 | A kind of forging technology of nuclear island spindle |
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CN106077415A true CN106077415A (en) | 2016-11-09 |
CN106077415B CN106077415B (en) | 2018-12-25 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111154961A (en) * | 2019-12-31 | 2020-05-15 | 无锡宝露重工有限公司 | Method for manufacturing shaft forging and shaft forging manufactured by same |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101513664A (en) * | 2009-04-01 | 2009-08-26 | 燕山大学 | Efficient forging method using curved-surface swage blocks |
DE102008036226A1 (en) * | 2008-08-02 | 2010-02-04 | Volkswagen Ag | Hollow shaft i.e. transmission shaft, manufacturing method for motor vehicle, involves transforming reform into hollow intermediate form and performing rotary swaging of hollow intermediate form |
CN102728771A (en) * | 2012-06-26 | 2012-10-17 | 江苏金源锻造股份有限公司 | Method for forging nuclear island spindle |
CN103894792A (en) * | 2014-02-26 | 2014-07-02 | 陕西华威锻压有限公司 | Method for machining forge piece of large-scale single-flange anti-explosion motor main shaft of all-fiber texture |
CN104175063A (en) * | 2013-05-28 | 2014-12-03 | 陕西华威锻压有限公司 | All-fiber-texture large-size one-piece flange fan main shaft forging method |
-
2016
- 2016-08-24 CN CN201610706819.9A patent/CN106077415B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008036226A1 (en) * | 2008-08-02 | 2010-02-04 | Volkswagen Ag | Hollow shaft i.e. transmission shaft, manufacturing method for motor vehicle, involves transforming reform into hollow intermediate form and performing rotary swaging of hollow intermediate form |
CN101513664A (en) * | 2009-04-01 | 2009-08-26 | 燕山大学 | Efficient forging method using curved-surface swage blocks |
CN102728771A (en) * | 2012-06-26 | 2012-10-17 | 江苏金源锻造股份有限公司 | Method for forging nuclear island spindle |
CN104175063A (en) * | 2013-05-28 | 2014-12-03 | 陕西华威锻压有限公司 | All-fiber-texture large-size one-piece flange fan main shaft forging method |
CN103894792A (en) * | 2014-02-26 | 2014-07-02 | 陕西华威锻压有限公司 | Method for machining forge piece of large-scale single-flange anti-explosion motor main shaft of all-fiber texture |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111154961A (en) * | 2019-12-31 | 2020-05-15 | 无锡宝露重工有限公司 | Method for manufacturing shaft forging and shaft forging manufactured by same |
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CN106077415B (en) | 2018-12-25 |
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