CN104438885A - High-precision bending die manufacturing method - Google Patents

High-precision bending die manufacturing method Download PDF

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Publication number
CN104438885A
CN104438885A CN201410490950.7A CN201410490950A CN104438885A CN 104438885 A CN104438885 A CN 104438885A CN 201410490950 A CN201410490950 A CN 201410490950A CN 104438885 A CN104438885 A CN 104438885A
Authority
CN
China
Prior art keywords
bending die
rough forging
processed
machining
annealing
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.)
Pending
Application number
CN201410490950.7A
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Chinese (zh)
Inventor
钱根来
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Yichen Mould Technology Co Ltd
Original Assignee
Wuxi Yichen Mould Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuxi Yichen Mould Technology Co Ltd filed Critical Wuxi Yichen Mould Technology Co Ltd
Priority to CN201410490950.7A priority Critical patent/CN104438885A/en
Publication of CN104438885A publication Critical patent/CN104438885A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/20Making tools by operations not covered by a single other subclass
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten

Abstract

The invention discloses a high-precision bending die manufacturing method and belongs to the technical field of die machining. The machining process comprises the steps of (1) preparation of bending die materials, (2) annealing treatment of forging blanks, (3) preliminary machining of the forging blanks, (4) one-off forming machining, (5) heat treatment, (6) secondary forming machining and (7) assembling. The method solves the problems that machined parts are low in precision, materials are wasted, and the production efficiency is low due to the fact that an existing bending die is low in precision, and has the advantages that the method is simple, the cost is low and machining is easy.

Description

A kind of high accuracy bending die manufacture method
Technical field
The invention belongs to mold machining technology field, more particularly, relate to a kind of manufacture method of the high accuracy punch die for machining shape complexity.
Background technology
Punch process utilizes the mould be arranged on forcing press, applies pressure, make plate produce distortion in mould to the plate in mould, thus obtain the production technology of the product parts of definite shape, size and performance.And in the process of punch process, diel is special technological equipment Sheet Metal Processing being become punching parts.When punch process, usually need the geomery needed for bar, materials in the tube, shape bending being become, its diel used is bending die.When utilizing bending die to process some complex-shaped parts, due to complex-shaped, high requirement is proposed for its size and morpheme, and more existing bending dies are usually because its manufacture method limit, the element precision of processing can not reach requirement, cause waste of material, and cause production efficiency low.
Summary of the invention
The part to be processed precision caused because of lack accuracy for existing bending die is low, waste of material and the low problem of production efficiency, the invention provides a kind of high accuracy bending die manufacture method, it is by the Technology for Heating Processing reasonably becoming to be grouped into and this composition is corresponding, the precision of mould is improved, add the precision of part to be processed, save material, improve production efficiency.
For solving the problem, the present invention adopts following technical scheme.
A kind of high accuracy bending die manufacture method, comprises the following steps:
(1) preparation of bending die material:
Bending die adopts rough forging to obtain, and the mass percent of this rough forging component is: C:0.9-1.05%, Cr:0.90-1.20%, W:1.20-1.60%, Mn:0.80-1.10%, and surplus is Fe;
(2) annealing in process of rough forging:
Annealed to it by the annealed stove of rough forging through step (1), its annealing temperature is 580-640 DEG C, and annealing time is 5-7 hour, is chilled to 460-520 DEG C of laggard line space in the lehr cold;
(3) preliminary working of rough forging:
On lathe, preparatory processing circular port axle, planer or milling machine process rectangular surfaces;
(4) once-forming processing:
Lathe is processed circular port axle, machining shape profile or the pre-hole of nibs on milling machine;
(5) heat treatment:
The bending die will processed through step (4), was heated to 800-830 DEG C in 35 minutes, and be incubated after 50 minutes and quench, oil quenching, then carries out tempering at 190-210 DEG C of temperature, tempering three times;
(6) secondary forming processing:
Grinding machine of universal is processed circular port axle, profile processed by form grinder, coordinate mill or some machining tool process nibs or profile;
(7) assemble:
Pincers worker fine finishining, assembling, adjustment.
Preferably, in described step (1), the mass percent of bending die rough forging component is: C:1.00%, Cr:1.10%, W:1.35%, Mn:0.90%, and surplus is Fe.
Preferably, in described step (2), rough forging annealing temperature is 590 DEG C, and annealing time is 6 hours, is chilled to 500 DEG C of laggard line spaces in the lehr cold.
Preferably, in described step (5), quenching adopts mould special quenching oil.
Compared to prior art, beneficial effect of the present invention is:
(1) the present invention is by the reasonable disposition to material composition, and adopt low hardening heat and temperature, the die hardness obtained can reach 62HRC, its precision is greatly enhanced, add the precision of part to be processed, save material, improve production efficiency.
(2) the inventive method is simple, and cost is low, handling ease.
Detailed description of the invention
Describe the present invention below in conjunction with embodiment.
embodiment 1
A kind of high accuracy bending die manufacture method, comprises the following steps:
(1) preparation of bending die material:
Bending die adopts rough forging to obtain, and the mass percent of this rough forging component is: C:1.00%, Cr:1.10%, W:1.35%, Mn:0.90%, and surplus is Fe;
(2) annealing in process of rough forging:
Annealed to it by the annealed stove of rough forging through step (1), its annealing temperature is 590 DEG C, and annealing time is 6 hours, is chilled to 500 DEG C of laggard line spaces in the lehr cold;
(3) preliminary working of rough forging:
On lathe, preparatory processing circular port axle, planer or milling machine process rectangular surfaces;
(4) once-forming processing:
Lathe is processed circular port axle, machining shape profile or the pre-hole of nibs on milling machine;
(5) heat treatment:
The bending die will processed through step (4), was heated to 810 DEG C in 35 minutes, was incubated after 50 minutes and quenched, and adopted mould special quenching oil to carry out oil quenching, then at 200 DEG C of temperature, carried out tempering, tempering three times;
(6) secondary forming processing:
Grinding machine of universal is processed circular port axle, profile processed by form grinder, coordinate mill or some machining tool process nibs or profile;
(7) assemble:
Pincers worker fine finishining, assembling, adjustment.

Claims (4)

1. a high accuracy bending die manufacture method, is characterized in that following steps:
(1) preparation of bending die material:
Bending die adopts rough forging to obtain, and the mass percent of this rough forging component is: C:0.9-1.05%, Cr:0.90-1.20%, W:1.20-1.60%, Mn:0.80-1.10%, and surplus is Fe;
(2) annealing in process of rough forging:
Annealed to it by the annealed stove of rough forging through step (1), its annealing temperature is 580-640 DEG C, and annealing time is 5-7 hour, is chilled to 460-520 DEG C of laggard line space in the lehr cold;
(3) preliminary working of rough forging:
On lathe, preparatory processing circular port axle, planer or milling machine process rectangular surfaces;
(4) once-forming processing:
Lathe is processed circular port axle, machining shape profile or the pre-hole of nibs on milling machine;
(5) heat treatment:
The bending die will processed through step (4), was heated to 800-830 DEG C in 35 minutes, and be incubated after 50 minutes and quench, oil quenching, then carries out tempering at 190-210 DEG C of temperature, tempering three times;
(6) secondary forming processing:
Grinding machine of universal is processed circular port axle, profile processed by form grinder, coordinate mill or some machining tool process nibs or profile;
(7) assemble:
Pincers worker fine finishining, assembling, adjustment.
2. a kind of high accuracy bending die manufacture method according to claim 1, it is characterized in that, in described step (1), the mass percent of bending die rough forging component is: C:1.00%, Cr:1.10%, W:1.35%, Mn:0.90%, and surplus is Fe.
3. a kind of high accuracy bending die manufacture method according to claim 1, is characterized in that, in described step (2), rough forging annealing temperature is 590 DEG C, and annealing time is 6 hours, is chilled to 500 DEG C of laggard line spaces in the lehr cold.
4. a kind of high accuracy bending die manufacture method according to claim 1, is characterized in that, in described step (5), quenching adopts mould special quenching oil.
CN201410490950.7A 2014-09-24 2014-09-24 High-precision bending die manufacturing method Pending CN104438885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410490950.7A CN104438885A (en) 2014-09-24 2014-09-24 High-precision bending die manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410490950.7A CN104438885A (en) 2014-09-24 2014-09-24 High-precision bending die manufacturing method

Publications (1)

Publication Number Publication Date
CN104438885A true CN104438885A (en) 2015-03-25

Family

ID=52886076

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410490950.7A Pending CN104438885A (en) 2014-09-24 2014-09-24 High-precision bending die manufacturing method

Country Status (1)

Country Link
CN (1) CN104438885A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105945523A (en) * 2016-06-14 2016-09-21 沈阳飞机工业(集团)有限公司 Machining method for thermal drawing die with complex profiles
CN106424384A (en) * 2016-09-23 2017-02-22 安徽成飞集成瑞鹄汽车模具有限公司 Manufacturing method for square part inserts
CN107584257A (en) * 2017-10-26 2018-01-16 苏州创新达成塑胶模具有限公司 A kind of manufacture method of high-precision mold

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011177755A (en) * 2010-03-01 2011-09-15 Honda Motor Co Ltd Forming method by forging and forming mold for forging
CN103567729A (en) * 2012-08-05 2014-02-12 韦光东 Hub extrusion die casting manufacturing process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011177755A (en) * 2010-03-01 2011-09-15 Honda Motor Co Ltd Forming method by forging and forming mold for forging
CN103567729A (en) * 2012-08-05 2014-02-12 韦光东 Hub extrusion die casting manufacturing process

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
崔忠圻: "《金属学与热处理》", 30 October 1994 *
洪惠良 等: "《冷冲模技术实训》", 30 June 2009 *
陈文华: "复合热处理对CrWMn钢组织的影响", 《金属热处理》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105945523A (en) * 2016-06-14 2016-09-21 沈阳飞机工业(集团)有限公司 Machining method for thermal drawing die with complex profiles
CN105945523B (en) * 2016-06-14 2018-08-21 沈阳飞机工业(集团)有限公司 The hot-stretch mould processing method of complex profile
CN106424384A (en) * 2016-09-23 2017-02-22 安徽成飞集成瑞鹄汽车模具有限公司 Manufacturing method for square part inserts
CN106424384B (en) * 2016-09-23 2019-02-12 安徽成飞集成瑞鹄汽车模具有限公司 The production method of spare part insert
CN107584257A (en) * 2017-10-26 2018-01-16 苏州创新达成塑胶模具有限公司 A kind of manufacture method of high-precision mold

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Application publication date: 20150325