CN106312485A - High-precision long-service-life bending machine lower die manufacturing method - Google Patents
High-precision long-service-life bending machine lower die manufacturing method Download PDFInfo
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- CN106312485A CN106312485A CN201610984904.1A CN201610984904A CN106312485A CN 106312485 A CN106312485 A CN 106312485A CN 201610984904 A CN201610984904 A CN 201610984904A CN 106312485 A CN106312485 A CN 106312485A
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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
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a high-precision long-service-life bending machine lower die manufacturing method. The high-precision long-service-life bending machine lower die manufacturing method is characterized by comprising the following steps that 1, a die raw material is prepared; 2, preheating treatment is conducted on a forging blank; 3, rough machining is conducted on the forging blank; 4, heat treatment is conducted on a roughlymachined semi-finisheddie product; 5, semi-finishing machining is conducted on the die; 6, tempering is performed for nature determination; 7, finish machining is conducted on the die; 8, oxidization and nitridation treatment is conducted on the die. The high-precision long-service-life bending machine lower die manufacturing method has the advantages that the surface of a bending machine lower die manufactured by adopting the method is attractive and is not likely to corrode, the surface hardness is greatly improved, the abrasion resistance is improved for several times than a conventional die, and the service life is long; a die base is high in toughness, even if the pressure exceeding extreme resisting pressure is borne, the die does not crack and flow apart, and the usage safety of the die is remarkably improved; the die material, the machining time and other costs are saved, the production efficiency is improved, and the competitiveness of products is improved.
Description
Technical field
The invention belongs to Bending Mould technical field, particularly relate to a kind of bender lower die manufacture method.
Technical background
Along with improving constantly of industrial automatization, mould and die accuracy retentivity is required more and more higher.Existing bending
Machine lower mold manufacture method is mainly passed through: the steps such as blank forging → roughing → heat treatment → polish, various manufacture methods it
Between difference be mainly the control of temperature in the selection of base mould material and Technology for Heating Processing.Shortcoming is to use existing method system
The common bending machine lower mold service life produced is low, working portion precision stability is poor, affects product quality, and can cause mould
The huge waste of the tool cost such as material, machining period, is greatly increased the cost of product and reduces production efficiency, having a strong impact on product
Competitiveness；Common bending machine lower mold generally use the mode of integral quenching to improve mould integral hardness, to promote mould
Anti-wear performance, reaches to improve the effect of die life, if mould integral hardness is the highest, then can reduce the toughness of mould, mould
Have bear pressure excessive in the case of be easily generated cracking and disperse, there is mould and use potential safety hazard；If it addition, under common bending machine
Mould surface free special handling, after using a period of time, die surface corrosion, affect mould and die accuracy and outward appearance.
Summary of the invention
It is an object of the invention to provide a kind of high precision and long service life bender lower die manufacture method, method is simple, safety, system
The bender lower die precision produced is high, and the life-span is long, high tenacity, and case hardness is high, and wearability is good, and surface is difficult to corrosion.
A kind of high precision and long service life bender lower die manufacture method, is characterized in that these manufacture method concrete steps are according to as follows
Carry out:
1) base mould material prepares: using rough forging processing mold, the component of rough forging is designated as by mass percentage: C:
0.42%～0.44%, Mn:0.61%～0.63%, Cr:0.95%～0.97%, Mo:0.16%～0.18%, Si:0.23%～0.25%,
P:0.024%～0.026%, S:0.02%～0.04%, remaining is Fe；
2) rough forging conditioning treatment: the rough forging in step 1) is carried out normalized treatment, rough forging is heated to 860
DEG C～880 DEG C, air cooling of coming out of the stove, rough forging obtain good cutting；
3) rough forging roughing: with milling machine by step 2) rough forging after conditioning treatment is processed into mould drawing requirement shape
Shape；
4) mould roughing semi-finished product heat treatment: the mould semi-finished product that step 3) is processed are carried out modifier treatment；
5) mould semifinishing: the mould semi-finished product after step 4) Quenching Treatment are carried out corase grind processing and finish-milling is processed；
6) be tempered qualitative: step 5) semifinishing semi-finished product are carried out temper, and temperature is 520 DEG C～550 DEG C, eliminate
Semifinishing semi-finished product internal stress；
7) mould polish: step 6) is carried out ground finish to die drawing paper size, mould through being tempered semi-finished product qualitatively
Surface roughness is worked into more than Ra0.8；
8) mould oxynitriding processes: the lower mold of step 7) polish carries out oxynitriding process, oxynitriding temperature 520 DEG C～550
DEG C, more than 12 hours oxynitriding time, die surface nitride layer depth 0.03～0.05mm, more than die surface hardness HV600.
The present invention improves further, will be processed into mould drawing with milling machine and want in described step 3) rough forging roughing
When seeking shape, monolateral stay 0.5～0.6mm allowance.
The present invention improves further, in described step 4) mould roughing semi-finished product heat treatment carries out mould semi-finished product
During modifier treatment, charging temperature is 500 DEG C～550 DEG C, heats 40～50 minutes to 820 DEG C～850 DEG C, and is incubated 0.5 hour
Above, then quench through oil cooling, then 520 DEG C～550 DEG C of temper, die matrix hardness reaches 37～39HRC, die matrix
Reach optimum tenacity.
Compared with prior art, it is an advantage of the invention that the bender lower die die surface manufactured by the method for the present invention
Attractive in appearance being difficult to corrosion, case hardness is greatly improved, and wearability improves several times than traditional dies, and service life is long；Die matrix is high
Toughness, oversteps the extreme limit pressure even if bearing pressure, and mould also will not ftracture and disperse, and safety that mould use is greatly improved；Joint
Save the cost such as mold materials, machining period, improve production efficiency, improve the competitiveness of product.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and the clearest, below by the embodiment of the present invention
Technical scheme is clearly and completely described.Obviously, described embodiment be the present invention a part of embodiment rather than
Whole embodiments.Based on described embodiments of the invention, help those skilled in the art to the inventive concept of the present invention,
Technical scheme has more complete, accurate and deep understanding.
A kind of high precision and long service life bender lower die manufacture method, is characterized in that these manufacture method concrete steps are according to as follows
Carry out:
1) base mould material prepares: using rough forging processing mold, the component of rough forging is designated as by mass percentage: C:
0.43%, Mn:0.62%, Cr:0.96%, Mo:0.17%, Si:0.24%, P:0.025%, S:0.03%, remaining is Fe；
2) rough forging conditioning treatment: the rough forging in step 1) is carried out normalized treatment, rough forging is heated to 880
DEG C, air cooling of coming out of the stove；
3) rough forging roughing: with milling machine by step 2) rough forging after conditioning treatment is processed into mould drawing requirement shape
Shape；
4) mould roughing semi-finished product heat treatment: the mould semi-finished product that step 3) is processed are carried out modifier treatment；
5) mould semifinishing: the mould semi-finished product after step 4) Quenching Treatment are carried out corase grind processing and finish-milling is processed；
6) be tempered qualitative: step 5) semifinishing semi-finished product are carried out temper, and temperature is 520 DEG C；
7) mould polish: step 6) is carried out ground finish to die drawing paper size, mould through being tempered semi-finished product qualitatively
Surface roughness is worked into more than Ra0.8；
8) mould oxynitriding processes: the lower mold of step 7) polish carries out oxynitriding process, oxynitriding temperature 520 DEG C～550
DEG C, more than 12 hours oxynitriding time, die surface nitride layer depth 0.03～0.05mm, more than die surface hardness HV600.
Further, wherein in the roughing of step 3) rough forging: when will be processed into mould drawing requirement shape with milling machine,
Monolateral stay 0.5～0.6mm allowance.
Further, wherein step 4) mould roughing semi-finished product heat treatment carries out modifier treatment to mould semi-finished product
Time, charging temperature is 500 DEG C, heats 40～50 minutes to 850 DEG C, and is incubated more than 0.5 hour, then quenches through oil cooling, then
520 DEG C of temper.
Embodiment 2
A kind of high precision and long service life bender lower die manufacture method, is characterized in that these manufacture method concrete steps are according to entering as follows
OK:
1) base mould material prepares: using rough forging processing mold, the component of rough forging is designated as by mass percentage: C:
0.42%, Mn:0.63%, Cr:0.95%, Mo:0.18%, Si:0.23%, P:0.024%, S:0.03%, remaining is Fe；
2) rough forging conditioning treatment: the rough forging in step 1) is carried out normalized treatment, rough forging is heated to 870
DEG C, air cooling of coming out of the stove；
3) rough forging roughing: with milling machine by step 2) rough forging after conditioning treatment is processed into mould drawing requirement shape
Shape；
4) mould roughing semi-finished product heat treatment: the mould semi-finished product that step 3) is processed are carried out modifier treatment；
5) mould semifinishing: the mould semi-finished product after step 4) Quenching Treatment are carried out corase grind processing and finish-milling is processed；
6) be tempered qualitative: step 5) semifinishing semi-finished product are carried out temper, and temperature is 540 DEG C；
7) mould polish: step 6) is carried out ground finish to die drawing paper size, mould through being tempered semi-finished product qualitatively
Surface roughness is worked into more than Ra0.8；
8) mould oxynitriding processes: the lower mold of step 7) polish carries out oxynitriding process, oxynitriding temperature 520 DEG C～550
DEG C, more than 12 hours oxynitriding time, die surface nitride layer depth 0.03～0.05mm, more than die surface hardness HV600.
Further, wherein in the roughing of step 3) rough forging: when will be processed into mould drawing requirement shape with milling machine,
Monolateral stay 0.5～0.6mm allowance.
Further, wherein step 4) mould roughing semi-finished product heat treatment carries out modifier treatment to mould semi-finished product
Time, charging temperature is 530 DEG C, heats 40～50 minutes to 840 DEG C, and is incubated more than 0.5 hour, then quenches through oil cooling, then
540 DEG C of temper.
The bender manufactured according to embodiment 1 process conditions with core 2V high precision and long service life standard lower mold with common with core 2V
It is as follows that lower mold under equal conditions carries out service life test result.
From test result, the common die that bender lower die mould manufactures than existing method made in accordance with the present invention
Service life is long.
The preferred embodiments of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art without
Creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technology people in the art
Member is the most on the basis of existing technology by the available skill of logical analysis, reasoning, or a limited experiment
Art scheme, all should be in the protection domain being defined in the patent claims.
Claims (4)
1. a high precision and long service life bender lower die manufacture method, it is characterised in that these manufacture method concrete steps are according to as follows
Carry out:
1) base mould material prepares: using rough forging processing mold, the component of rough forging is designated as by mass percentage: C:
0.42%～0.44%, Mn:0.61%～0.63%, Cr:0.95%～0.97%, Mo:0.16%～0.18%, Si:0.23%～0.25%,
P:0.024%～0.026%, S:0.02%～0.04%, remaining is Fe；
2) rough forging conditioning treatment: the rough forging in step 1) is carried out normalized treatment, heats 860 DEG C by rough forging
～880 DEG C, air cooling of coming out of the stove；
3) rough forging roughing: with milling machine by step 2) rough forging after conditioning treatment is processed into mould drawing requirement shape
Shape；
4) mould roughing semi-finished product heat treatment: the mould semi-finished product that step 3) is processed are carried out modifier treatment；
5) mould semifinishing: the mould semi-finished product after step 4) Quenching Treatment are carried out corase grind processing and finish-milling is processed；
6) be tempered qualitative: step 5) semifinishing semi-finished product are carried out temper, and temperature is 520 DEG C～550 DEG C；
7) mould polish: step 6) is carried out ground finish to die drawing paper size through being tempered semi-finished product qualitatively；
8) mould oxynitriding processes: the lower mold of step 7) polish carries out oxynitriding process, oxynitriding temperature 520 DEG C～550
DEG C, more than 12 hours oxynitriding time, die surface nitride layer depth 0.03～0.05mm, more than die surface hardness HV600.
A kind of high precision and long service life bender lower die manufacture method the most according to claim 1, it is characterised in that described
When step 3) rough forging roughing will be processed into mould drawing requirement shape with milling machine, monolateral 0.5～0.6mm is stayed to add spare time
Amount.
A kind of high precision and long service life bender lower die manufacture method the most according to claim 1, it is characterised in that described
When mould semi-finished product being carried out modifier treatment in step 4) mould roughing semi-finished product heat treatment, charging temperature is 500 DEG C～550
DEG C, heat 40～50 minutes to 820 DEG C～850 DEG C, and be incubated more than 0.5 hour, then quench through oil cooling, then 520 DEG C～550
DEG C temper.
A kind of high precision and long service life bender lower die manufacture method the most according to claim 1, it is characterised in that described
Step 7) mould polish will carry out ground finish to die drawing paper size through being tempered semi-finished product qualitatively, and die surface is thick
Rugosity is worked into more than Ra0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610984904.1A CN106312485A (en) | 2016-11-09 | 2016-11-09 | High-precision long-service-life bending machine lower die manufacturing method |
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|---|---|---|---|
| CN201610984904.1A CN106312485A (en) | 2016-11-09 | 2016-11-09 | High-precision long-service-life bending machine lower die manufacturing method |
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ID=57817451
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794556A (en) * | 2019-02-25 | 2019-05-24 | 安徽博美机床股份有限公司 | A kind of bender lower die production method |
| CN110524206A (en) * | 2019-06-04 | 2019-12-03 | 江苏省送变电有限公司 | A kind of production method of carbon fiber fixture die |
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| CN104928586A (en) * | 2015-06-30 | 2015-09-23 | 宝山钢铁股份有限公司 | Hot stamping die steel and production method thereof |
| CN105364433A (en) * | 2015-11-27 | 2016-03-02 | 昆山惠众机电有限公司 | Hot-working die production technology |
| CN105986074A (en) * | 2015-01-30 | 2016-10-05 | 重庆沁煌机械制造有限公司 | Die steel processing technology |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004169177A (en) * | 2002-11-06 | 2004-06-17 | Daido Steel Co Ltd | Alloy tool steel, its manufacturing method, and die using it |
| CN102108469A (en) * | 2010-10-26 | 2011-06-29 | 常州宝菱重工机械有限公司 | Hot rolling hot straightening roll suitable for thick steel plates with thickness of less than or equal to 60mm and preparation method thereof |
| CN103567729A (en) * | 2012-08-05 | 2014-02-12 | 韦光东 | Hub extrusion die casting manufacturing process |
| CN104004966A (en) * | 2014-05-20 | 2014-08-27 | 滁州迪蒙德模具制造有限公司 | Manufacturing method of stamping die |
| CN104438853A (en) * | 2014-12-14 | 2015-03-25 | 马鞍山市国菱机械刃模有限公司 | Indentation-free bending machine die and manufacture method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109794556A (en) * | 2019-02-25 | 2019-05-24 | 安徽博美机床股份有限公司 | A kind of bender lower die production method |
| CN110524206A (en) * | 2019-06-04 | 2019-12-03 | 江苏省送变电有限公司 | A kind of production method of carbon fiber fixture die |
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Application publication date: 20170111 |
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