CN109648024A - A kind of application method of forging tools convex tup - Google Patents
A kind of application method of forging tools convex tup Download PDFInfo
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- CN109648024A CN109648024A CN201811412623.4A CN201811412623A CN109648024A CN 109648024 A CN109648024 A CN 109648024A CN 201811412623 A CN201811412623 A CN 201811412623A CN 109648024 A CN109648024 A CN 109648024A
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- forging
- steel
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- tup
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Classifications
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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
-
- 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
-
- 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
- B21J5/08—Upsetting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention discloses a kind of application method of metal forging tool convex tup, and purpose is used for the round steel or module of forging heavy section, improves die steel interior tissue uniformity and mechanical property is in kind horizontal；To achieve the above object the technical scheme is that mainly improving interior tissue by using forging tools convex tup heavy reduction, recycle the forging tools such as jumping-up disk, wide anvil, marking knife and large platform, using the round steel or module of the multi-direction forging heavy section of more fire time, after heat treatment mechanical property is up to standard for steel.Compared with the prior art, the invention has the following advantages: 1. reducing repeatedly iron loss caused by jumping-up repeatedly, metal utilization 1%~1.5% is improved；2. reducing forging process production fire, reduce energy consumption (ton steel saves 60 cubic metres of natural gases)；3. reinforcing changing and improving heavy section steel center portion machine to center portion forging deformation using convex tup.
Description
Technical field
The invention belongs to metal forging techniques, and in particular to a kind of application method of forging tools convex tup, for big
The large-scale special steel forging material of swaging machine production.
Background technique
Mould steel is special steel alloy, is had many uses, and common mould steel is divided into three generally according to purposes and operating condition
Major class, i.e. cold work die steel, hot die steel and plastic die steel.Mould steel mainly adds carbon, chromium, molybdenum, tungsten, vanadium, nickel, manganese
Reach some properties of steel with the chemical elements such as silicon, but with the addition of certain chemical elements, mould steel plus
Work plasticity can be different degrees of decline.The square steel of round steel and side length greater than 100mm for diameter greater than 100mm generallys use forging
Method is made, improves mould steel interior tissue by increasing deflection, to improve steel performance.
With the rapid development of the national economy, mould steel is sent out towards enlargement, complication, precise treatment and more specification directions
Exhibition, wherein the market demand to heavy section and high performance mould steel has entered the rapid growth stage at present；Application field
It is constantly widening, such as using heavy section and is requiring high performance aluminium extrusion hot die steel, manufacture aerospace and high speed arrange
Automobile-used large aluminum profile；For another example using heavy section and high performance pre-hardening plastic die steel is required, the large-scale passenger-cargo vapour of manufacture
The bumper and instrument board of vehicle.
High mechanical performance index requires steel to have a uniformly tiny interior tissue, nonuniform organization or coarse can reduce
The mechanical property of steel, it is general using repeatedly jumping-up pulls out method repeatedly both at home and abroad in forging heavy section die steel, to change
Kind steel interior tissue, raising steel performance, but iron loss caused by repeatedly jumping-up pulls out repeatedly, metal long-time heating
Improve energy consumption.
Summary of the invention
The present invention discloses a kind of application method of metal forging tool convex tup, and purpose is used for the circle of forging heavy section
Steel or module, improve die steel interior tissue uniformity and mechanical property is in kind horizontal.
To achieve the above object the technical scheme is that mainly by using forging tools convex tup heavy reduction
Improve interior tissue, recycles the forging tools such as jumping-up disk, wide anvil, marking knife and large platform, it is big using the multi-direction forging of more fire time
The round steel or module in type section, after heat treatment mechanical property is up to standard for steel.
Specific process step:
1. process for making:
1. chemical component (%): aluminium extrusion hot die steel 4Cr5MoSiV1 ingredient is shown in Table 1；Plastic die steel
3Cr2MnNiMo ingredient, is shown in Table 2；Remaining is Fe and inevitable impurity.
1 aluminium extrusion hot die steel 4Cr5MoSiV1 chemical component of table
2 plastic die steel 3Cr2MnNiMo chemical component of table
2. being made steel using UHP+LF+VD, control VD tapping temperature is poured steel ingot, guarantees as-cast structure inside steel ingot.
2. forging technology: using the multi-direction forging of more fire time, being forged using forging tools convex tup heavy reduction, then benefit
Three steps are roughly divided into forging tools, the round steel or module of forging heavy section such as jumping-up disk, wide anvil, marking knife and large platforms
It is rapid:
The first step, steel ingot the first fire time heating, steel ingot pressing tongs is forging: 1. Heating Steel Ingots to holding temperature keep the temperature one section
Time；Deformation is forged 2. forging press carries out pressing tongs to ingot head；3. final forging temperature is not less than 900 DEG C；
Second step, steel ingot melt down the second fire time heating, and jumping-up of steel ingot is primary to pull out: 1. steel ingot of the pressing tongs after returns
Second of heating of heating furnace；It is heated to holding temperature 2. melting down, soaking time is 4h~5h；3. it is enterprising that steel ingot vertical is put in jumping-up disk
Jumping-up of row, upset ratio are not less than 2；4. the forging stock after jumping-up is once pulled out, wherein being drawn into big square base to use
In forging round steel, being drawn into big rectangular bloom is for forging square steel module；5. final forging temperature is not less than 900 DEG C；
Third step, forging stock melt down third fire time heating, finished product forging: by after jumping-up forging stock carry out finished product forging, 1. on
Tup uses convex tup heavy reduction 150mm~180mm using wide anvil, lower ram, wherein big square base is on four sides using convex
Set hammer head, two wide faces of big rectangular bloom use convex tup；2. upper ram uses large platform forging blank using wide anvil, lower ram
Concave surface；3. upper lower ram uses wide anvil forging finished steel.
3. red after the forging of finished product material send heat treatment, the machining stress generated in forging process is eliminated, improves hardness, improves cutting
Processability.
4. finished product material outer dimension and mechanical performance index
1. finished product material size range: round steel be Ф 600mm~Ф 800mm, module be 600mm~1000mm × 900mm~
1300mm；
2. mechanical property: round steel examines impact flexibility to be not less than 170J；Module check tensile strength is not less than 1010MPa,
Yield strength is not less than 870MPa, and elongation after fracture is not less than 13%；
3. material object material flaw detection level reaches SEP1921 standard C/c rank.
Compared with the prior art, the invention has the following advantages:
1. reducing iron loss caused by multiple jumping-up repeatedly, metal utilization 1%~1.5% is improved；
2. reducing forging process production fire, reduce energy consumption (ton steel saves 60 cubic metres of natural gases)；
3. reinforcing changing and improving heavy section steel center portion machine to center portion forging deformation using convex tup.Tool performance.
Detailed description of the invention
Fig. 1 is embodiment 1,2 upper ram of embodiment using wide anvil, and lower ram uses the big square base of convex tup forging,
Four sides uses convex tup；
Fig. 2 is embodiment 1,2 upper ram of embodiment using wide anvil, and lower ram uses large platform forging blank concave surface Cheng great Zheng
Rectangular base；
Fig. 3 is embodiment 1, lower ram uses wide anvil forging finished product in embodiment 2；
Fig. 4 is that 3 two wide faces of embodiment use convex tup；
Fig. 5 is the Aluminum-Extruding Die round steel material object photo of 1 heavy section of embodiment；
Fig. 6 is the Aluminum-Extruding Die round steel material object photo of 2 heavy section of embodiment；
Fig. 7 is the plastic die steel module material object photo of 3 heavy section of embodiment；
Fig. 8 is the Aluminum-Extruding Die round steel mechanical properties test sample position figure of heavy section；
Fig. 9 is hot forging or the plastic die steel module mechanical properties test sample position figure of heavy section.
Specific embodiment
The present invention is further illustrated in conjunction with the accompanying drawings and embodiments.
Embodiment 1
Aluminium extrusion hot die steel 4Cr5MoSiV1, finished size shape are round steel Ф 685mm.
1. smelting: it is made steel using UHP+LF+VD, is poured 13 tons of ingot shapes one, 1535 DEG C of VD tapping temperature, heat (batch) number: 17203
120811；
2. forging:
The first step, steel ingot the first fire time heating temperature is 1190 DEG C, keeps the temperature forging and stamping pincers handle after 15h, final forging temperature 1050
℃；
Second step, steel ingot return to heating furnace the second fire time heating, melt down and be heated to 1190 DEG C of holding temperature, soaking time is
5h, steel ingot vertical, which is put on jumping-up disk, carries out a jumping-up, steel ingot height 1950mm before jumping-up, forging stock height 960mm, jumping-up after upsetting
Than being greater than 2, the forging stock after jumping-up is once pulled out, and is drawn into big square base 1300mm × 1300mm, final forging temperature 930
℃；
Third step, forging stock return to the fire time heating of heating furnace third, melt down and be heated to 1190 DEG C of holding temperature, soaking time is
4h, 1. upper ram is using wide anvil, and lower ram is using the big square base 1300mm × 1300mm of convex tup forging, on four sides using convex
Set hammer head heavy reduction 150mm (as shown in Figure 1)；2. upper ram uses large platform forging blank concave surface using wide anvil, lower ram
At big square base 1000mm × 1000mm (as shown in Figure 2)；3. upper lower ram uses wide anvil forging finished product Ф 685mm steel
(as shown in Figure 3).
3. heat treatment: red after the forging of finished product material to send heat treatment, temperature is 830 DEG C, eliminates the internal stress generated in forging process,
Improve hardness, improves machinability.
4. physical and chemical inspection result
1. aluminium extrusion hot die steel 4Cr5MoSiV1 specification Ф 685mm round steel chemical component
3 chemical component inspection result of table
2. surface inspection is qualified；Shape is as shown in figure 5, round steel diameter Ф 688mm, length 3085mm.
3. learning service check sample position sees Fig. 8, inspection result is shown in Table 4；Standard regulation: hardness (HRC)
44~46,7mm × 10mm sample notched bar impact strength (J) is not less than 170；
4 mechanical properties test result of table
4. treated, finished product material presses SEP1921 ultrasonic examination, meets C/c rank, qualified.
Embodiment 2
Aluminium extrusion hot die steel 4Cr5MoSiV1, finished size shape are round steel Ф 785mm.
1. smelting: being made steel using UHP+LF+VD, casting 13t ingot shape one, 1540 DEG C of VD tapping temperature, heat (batch) number: 17203
110298；
2. forging:
The first step, steel ingot the first fire time heating temperature is 1190 DEG C, keeps the temperature forging and stamping pincers handle after 15h, final forging temperature 1060
℃；
Second step, steel ingot return to heating furnace the second fire time heating, melt down and be heated to 1190 DEG C of holding temperature, soaking time is
5h, steel ingot vertical, which is put on jumping-up disk, carries out a jumping-up, steel ingot height 1950mm before jumping-up, forging stock height 950mm, jumping-up after upsetting
Than being greater than 2, the forging stock after jumping-up is once pulled out, and is drawn into big square base 1300mm × 1300mm, final forging temperature 940
℃；
Third step, forging stock return to the fire time heating of heating furnace third, melt down and be heated to 1190 DEG C of holding temperature, soaking time is
4h, 1. upper ram is using wide anvil, and lower ram is using the big square base 1300mm × 1300mm of convex tup forging, on four sides using convex
Set hammer head heavy reduction 150mm (as shown in Figure 1)；2. upper ram uses large platform forging blank concave surface using wide anvil, lower ram
At big square base 1000mm × 1000mm (as shown in Figure 2)；3. upper lower ram uses wide anvil forging finished product Ф 785mm steel
(as shown in Figure 3).
3. heat treatment: red after the forging of finished product material to send heat treatment, temperature is 830 DEG C, eliminates the internal stress generated in forging process,
Improve hardness, improves machinability.
4. physical and chemical inspection result
1. aluminium extrusion hot die steel 4Cr5MoSiV1 specification Ф 785mm round steel chemical component the results are shown in Table 5；
5 chemical component inspection result of table
2. surface inspection is qualified, shape is as shown in fig. 6, round steel diameter Ф 787mm, length 2240mm；
3. learning service check sample position sees Fig. 8, inspection result is shown in Table 6, standard regulation: hardness (HRC) 44~46,7mm
× 10mm sample notched bar impact strength (J) is not less than 170；
6 inspection result of table
4. treated, finished product material presses SEP1921 ultrasonic examination, meets C/c rank, qualified.
Embodiment 3
Plastic die steel 3Cr2MnNiMo, finished size shape are the big mould of 700mm+20/-0mm × 1200mm+20/-0mm
Block.
1. smelting: being made steel using UHP+LF+VD, casting 27t ingot shape one, 1548 DEG C of VD tapping temperature, heat (batch) number: 17203
023295；
2. forging:
The first step, the fiery heating temperature of steel ingot first is 1210 DEG C, keeps the temperature forging and stamping pincers handle after 10h, final forging temperature is 1080 DEG C；
Second step, steel ingot return to heating furnace the second fire time heating, melt down and be heated to 1210 DEG C of holding temperature, soaking time is
5h, steel ingot vertical, which is put on jumping-up disk, carries out a jumping-up, steel ingot height 2650mm before jumping-up, forging stock height 1300mm, upsetting after upsetting
Thick than being greater than 2, the forging stock after jumping-up is once pulled out, and is drawn into big rectangular bloom 1200mm × 1300mm, final forging temperature 940
℃；
Third step, steel billet return to three fire time heating of heating furnace, melt down and be heated to 1200 DEG C of holding temperature, soaking time is
4h, 1. for upper ram using wide anvil, lower ram uses the big rectangular bloom 1200mm × 1300mm of convex tup forging, and two wide face uses
Convex tup heavy reduction 180mm (as shown in Figure 4)；2. upper ram, using wide anvil, lower ram is recessed using large platform forging blank
Face is at big rectangular bloom 850mm × 1300mm；3. upper lower ram uses wide anvil forging finished product 700mm+20/-0mm × 1200mm+
20/-0mm steel (as shown in Figure 6).
3. heat treatment: red after the forging of finished product material to send heat treatment, temperature is+590 DEG C of tempering of 880 DEG C of quenchings, eliminates forging process
The internal stress of middle generation, pre-hardening hardness improve machinability.
4. physical and chemical inspection result
1. plastic die steel 3Cr2MnNiMo specification 700mm × 1200mm is big, module ingredient inspection result is shown in Table 7.
7 chemical component inspection result of table
Surface inspection is qualified；Shape is as shown in fig. 7, profile thickness 711mm, width 1215mm, length 2590mm.
1. Fig. 9 is seen in mechanical properties test sample position, inspection result is shown in Table 8, qualification.
Table 8
4. the finished product material after heat treatment presses SEP1921 ultrasonic examination, meet C/c rank, it is qualified.
Claims (4)
1. a kind of application method of forging tools convex tup, it is characterised in that: mainly by using forging tools convex tup
Heavy reduction improves interior tissue, recycles the forging tools such as jumping-up disk, wide anvil, marking knife and large platform, multi-party using more fire time
To the round steel or module of forging heavy section；
Specific forging method is roughly divided into three steps:
The first step, steel ingot the first fire time heating, steel ingot pressing tongs is forging: 1. Heating Steel Ingots to holding temperature, heat preservation a period of time；
Deformation is forged 2. forging press carries out pressing tongs to ingot head；3. final forging temperature is not less than 900 DEG C；
Second step, steel ingot return to heating furnace the second fire time heating, and jumping-up of steel ingot is primary to pull out: 1. steel ingot of the pressing tongs after
Second of heating furnace is returned to heat；It is heated to holding temperature 2. melting down, soaking time is 4h~5h；3. steel ingot vertical is put on jumping-up disk
A jumping-up is carried out, upset ratio is not less than 2；4. the forging stock after jumping-up is once pulled out, wherein being drawn into big square base and being
For forging round steel, being drawn into big rectangular bloom is for forging square steel module；5. final forging temperature is not less than 900 DEG C；
Third step, forging stock melt down third fire time heating, finished product forging: the forging stock after jumping-up are carried out finished product forging, 1. upper ram
Using wide anvil, lower ram uses convex tup heavy reduction 150mm~180mm, wherein big square base four sides is hammered into shape using convex
Head, two wide faces of big rectangular bloom use convex tup；2. upper ram, using wide anvil, lower ram is recessed using large platform forging blank
Face；3. upper lower ram uses wide anvil forging finished steel.
2. a kind of application method of forging tools convex tup according to claim 1, it is characterised in that: forging aluminium extrusion heat
Make mould steel 4Cr5MoSiV1,13 tons ingot shape one；
The first step, steel ingot the first fire time heating temperature is 1190 DEG C, keeps the temperature forging and stamping pincers handle after 15h, final forging temperature 1050
℃；
The second step, steel ingot return to heating furnace the second fire time heating, melt down and be heated to 1190 DEG C of holding temperature, soaking time is
5h；Steel ingot vertical, which is put on jumping-up disk, carries out a jumping-up, steel ingot height 1950mm before jumping-up, forging stock height 960mm, jumping-up after upsetting
Than being greater than 2；Forging stock after jumping-up is once pulled out, and big square base 1300mm × 1300mm is drawn into；Final forging temperature is 930
℃；
The third step, forging stock return to heating furnace third fire and are heated to 1190 DEG C of holding temperature, soaking time 4h, 1. upper hammer
For head using wide anvil, lower ram is big using convex tup on four sides using the big square base 1300mm × 1300mm of convex tup forging
Drafts 150mm；2. upper ram using wide anvil, lower ram using large platform forging blank concave surface at big square base 1000mm ×
1000mm；3. upper lower ram uses wide anvil forging finished product Ф 685mm steel.
3. a kind of application method of forging tools convex tup according to claim 1, it is characterised in that: forging aluminium extrusion heat
Make mould steel 4Cr5MoSiV1,13 tons ingot shape one；
The first step, steel ingot the first fire time heating temperature is 1190 DEG C, keeps the temperature forging and stamping pincers handle after 15h, final forging temperature 1060
℃；
The second step, steel ingot return to heating furnace the second fire time heating, melt down and be heated to 1190 DEG C of holding temperature, soaking time is
5h；Steel ingot vertical, which is put on jumping-up disk, carries out a jumping-up, steel ingot height 1950mm before jumping-up, forging stock height 960mm, jumping-up after upsetting
Than being greater than 2；Forging stock after jumping-up is once pulled out, and big square base 1300mm × 1300mm is drawn into；Final forging temperature is 940
℃；
The third step, forging stock return to heating furnace third fire and are heated to 1190 DEG C of holding temperature, soaking time 4h, 1. upper hammer
For head using wide anvil, lower ram is big using convex tup on four sides using the big square base 1300mm × 1300mm of convex tup forging
Drafts 150mm；2. upper ram using wide anvil, lower ram using large platform forging blank concave surface at big square base 1000mm ×
1000mm；3. upper lower ram uses wide anvil forging finished product Ф 785mm steel.
4. a kind of application method of forging tools convex tup according to claim 1, it is characterised in that: plastic die steel
3Cr2MnNiMo, 27t ingot shape one；
The first step, steel ingot the first fire time heating temperature is 1210 DEG C, keeps the temperature forging and stamping pincers handle after 10h, final forging temperature 1080
℃；
The second step, steel ingot return to heating furnace the second fire time heating, melt down and be heated to 1210 DEG C of holding temperature, soaking time is
5h, steel ingot vertical, which is put on jumping-up disk, carries out a jumping-up, steel ingot height 2650mm before jumping-up, forging stock height 1300mm, upsetting after upsetting
Thick ratio is greater than 2；Forging stock after jumping-up is once pulled out, and big rectangular bloom 1200mm × 1300mm, final forging temperature 940 are drawn into
℃；
The third step, steel billet return to three fire of heating furnace and are heated to 1200 DEG C of holding temperature, soaking time 4h, 1. upper ram
Using wide anvil, lower ram uses the big rectangular bloom 1200mm × 1300mm of convex tup forging, and two wide faces are big using convex tup
Drafts 180mm；2. upper ram using wide anvil, lower ram using large platform forging blank concave surface at big rectangular bloom 850mm ×
1300mm；3. upper lower ram uses wide anvil forging finished product 700mm+20/-0mm × 1200mm+20/-0mm steel.
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| CN201811412623.4A CN109648024A (en) | 2018-11-26 | 2018-11-26 | A kind of application method of forging tools convex tup |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014545A (en) * | 2019-12-02 | 2020-04-17 | 抚顺特殊钢股份有限公司 | Convex upsetting disc for quick forging machine and application of convex upsetting disc to forging large forging stock |
| CN112658190A (en) * | 2021-02-24 | 2021-04-16 | 河南科技大学 | Steel ingot CWFF forging method and convex wide anvil |
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| CN112658190A (en) * | 2021-02-24 | 2021-04-16 | 河南科技大学 | Steel ingot CWFF forging method and convex wide anvil |
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Application publication date: 20190419 |