CN107999624B - A kind of use and processing method of the dedicated Bending Mould of safe door deckle board - Google Patents

A kind of use and processing method of the dedicated Bending Mould of safe door deckle board Download PDF

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Publication number
CN107999624B
CN107999624B CN201711283437.0A CN201711283437A CN107999624B CN 107999624 B CN107999624 B CN 107999624B CN 201711283437 A CN201711283437 A CN 201711283437A CN 107999624 B CN107999624 B CN 107999624B
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China
Prior art keywords
mold
plane
upper mold
bending
lower mold
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CN107999624A (en
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张迎年
张先进
张帆
张一帆
王克文
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ANHUI LIYUAN CNC BLADE MOLD MANUFACTURING Co Ltd
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ANHUI LIYUAN CNC BLADE MOLD MANUFACTURING Co Ltd
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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
    • 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
    • B21D37/20—Making tools by operations not covered by a single other subclass
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • 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
    • B21D53/00—Making other particular articles
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/04—Hardening by cooling below 0 degrees Celsius
    • 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The invention discloses the uses and processing method of a kind of dedicated Bending Mould of safe door deckle board, belong to mold design field.The application method of the mold are as follows: first assemble upper die component and lower mold assemblies；Lower mold assemblies are placed on the workbench of hydraulic press and are fixed again；Then, it lifts on upper die component to lower mold assemblies, keeps the punching press groove face cooperation of the stamping surface and lower mold of upper mold close；Then, upper die component is fixed on slider of hydraulic press；Finally, upper die component carries out bending and molding to the workpiece on lower mold.This method can quickly and efficiently process safe door deckle board, and bending is high-efficient, quality of finished product good.The processing method of the mold, for upper mold or lower mold, first forge, then it is reprocessed into the shape of all parts, then is refined, is finally assembled, wherein use special heat treatment process, so that its hardness, toughness and wearability meet technique requirement, processing uses more than ten thousand times or more still normal, service life height.

Description

A kind of use and processing method of the dedicated Bending Mould of safe door deckle board
The application is entitled: a kind of dedicated Bending Mould of safe door deckle board and its use and processing method, application number Are as follows: 201611080291.5, the applying date are as follows: the divisional application of the application for a patent for invention on November 30th, 2016.
Technical field
The invention belongs to mold design fields, specifically, being related to a kind of Bending Mould of safe door deckle board, more specifically Ground says, is related to a kind of dedicated Bending Mould of safe door deckle board and its use and processing method.
Background technique
Bending machine die is the tool that bending machine is used to machine-shaping plate, and this tool is made of various parts, different The part that constitutes of mold it is different.It mainly realizes the processing of article shape by the change of physical state of the formed material. Becoming blank by the guiding each other of upper die of bending machine and lower die under the pressure of the bending machine has specific shape and size Workpiece.In the actual production process, enterprise can configure different FLUTE ANGLEs according to the difference of shaping workpiece shape or size Lower die.But with the development of economy, the shape of the workpiece of bending develops towards diversification and complication, often at one piece Needing to carry out multiple bending on plate can be only achieved required shape, such as in safety cabinet industry, need shown in Fig. 1 when processing doorframe The bending plate of shape, the sheet forming both ends are symmetrical, formed respectively by identical bending three times at the both ends of flat sheet, Bending section from plate end ecto-entad is respectively the first bending section A, the second bending section B, third bending section C, third bending section C Angle with plate face is 93 °, and the angle of the second bending section B and third bending section C are 270 ° and the first bending section A and second Angle between bending section B is 90 °.It is bothersome laborious that tradition processes the bending part by way of multiple bending, multiple bending Accumulated tolerance is big, and bending precision substantially reduces, and therefore, requires to correct after each bending, take time and effort, processing efficiency is low.
In actual production, many people are attempted by way of a punching press multiple tracks bending, such as China Patent No.: 201120046795.1, disclose a kind of a entitled 5mm or more slab zigzag bending in publication date on December 07th, 2011 The patent document of mold, the mold include upper die and lower die, which is characterized in that the stamping surface of the upper mold is zigzag, under described The stamping surface of mould matches with upper mold.The program solves the problems, such as to be unable to bending and original when bending height is smaller Punching press twice, which is changed to a punching press, can then complete twice bending, substantially increase production efficiency in this way, ensure that the matter of product Amount, to achieve the purpose that reduce manufacturing cost.But the program can not process shape shown in FIG. 1, although in addition, it can be simultaneously Twice bending is processed, but workpiece is positioned in lower die and is not easy, bending position is inaccurate, it is often more important that, due to elastic restoring force Presence, bending angle is inconsistent with required product after bending, needs to correct, this proposes the design of upper and lower mould very high Requirement.
For another example, it China Patent No.: discloses a entitled in 201110166763.X, publication date on November 21st, 2011 Adjustable Z-shaped offset bending mold belongs to metal plate Bending Mould, it is characterized in that the offset bending die is mainly by upper die and lower die group At again upper mold is mainly made of upper die holder, upper fixed mould, upper adjustable pressing mold, upper compound gasket and upper fixing bolt, and lower die is again Mainly by lower die holder, lower fixed mould, under adjustable pressing mold and lower fixing bolt form, opened up and bending machine in the lower part of upper die holder Pressure line in oblique through slot on the right angle of δ angle, herein in upper oblique through slot it is corresponding install fixed mould, upper adjustable pressing mold and on Compound gasket is opened up with vertical center line also at the oblique through slot in right angle of δ angle, in this oblique through slot on the top of lower die holder It is corresponding install lower fixed mould, under adjustable pressing mold and lower compound gasket, and this upper and lower fixed mould and upper and lower adjustable pressing mold Bottom surface or top surface are the inclined-planes in θ angle corresponding with the bottom surface of upper and lower die holder or top surface, the molding of upper and lower mould, Z-shaped workpiece at Type, it is at low cost, it is high-quality.The mode of the patent implementation is also corresponding with workpiece shapes to be processed by providing one Mold complete, but the mold can not also process shape shown in FIG. 1.It is most important the reason is that mold cannot be processed and The corresponding mold of Fig. 1 shape proposes the new mode of thinking so to change original mold design theory, emphasis be with Requirement of the people to product is higher and higher, the precision of processed product also to require higher and higher.
Summary of the invention
1, it to solve the problems, such as
Production safety cabinet doorframe in need above-mentioned bending part, it be the both ends of flat sheet pass through respectively it is identical three times Bending forms, and the bending section inside from plate end is respectively the first bending section A, the second bending section B, third bending section C, third folding Curved segment C and the angle of plate face are 93 °, the angle of the second bending section B and third bending section C be 270 ° and the first bending section A and Angle between second bending section B is 90 °.Processing the workpiece in the prior art, there are processing difficulties, inefficient, machining accuracy are low The problem of, the present invention provides a kind of dedicated Bending Mould of safe door deckle board, and the processing of above-mentioned workpiece can be completed in a bending, High-efficient, machining accuracy is high, not damaged to workpiece.In addition, passing through this method the present invention also provides the application method of the mold Above-mentioned safe door deckle board can efficiently be produced.Further, since the mold in order to complete processing safe door deckle board function, Ensure that service life is lasting, it is also necessary to special processing technology is carried out to upper/lower die, it is ensured that upper/lower die is with higher hard Degree, the present invention also provides the processing methods of the upper/lower die.
2, technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of dedicated Bending Mould of safe door deckle board, including upper die component and lower mold assemblies；The upper die component packet Upper mold is included, lower mold assemblies include lower mold, it is characterised in that:
The lower end surface of the upper mold is stamping surface, oblique by the first inclined-plane, the second inclined-plane, third from side to the other side Face and the 4th inclined-plane are sequentially connected composition, and the angle between the first inclined-plane and upper mold side is 240 °, the first inclined-plane and second Angle between inclined-plane is 266 °, and the angle between the second inclined-plane and third inclined-plane is 91 °, and the 4th inclined-plane and the second inclined-plane are flat The intersection position on row, the first inclined-plane and the second inclined-plane is higher than the intersection position on third inclined-plane and the 4th inclined-plane；
The upper surface of the lower mold is provided with the punching press groove face to match with the stamping surface of upper mold, the punching press groove face It is sequentially connected and is formed by the first groove face, the second groove face, third groove face and the 4th groove face from side to the other side, the first groove face is under Angle between mould upper surface is 150 °, and the angle between the first groove face and the second groove face is 94 °, the second groove face and third slot Angle between face is 269 °, and the 4th groove face is parallel with the second groove face.
Further, the upper die component further includes upper die holder and upper mold fixed block, and upper die holder is equipped with upper mold limit Block；There are two the upper mold tools, is symmetricly set on the upper die holder of upper mold limited block two sides；The upper mold fixed block is set It sets on the upper die holder on the outside of upper mold, and compresses the lateral surface of upper mold；
The lower mold assemblies further include lower die holder and lower die fixed block, and lower die holder is equipped with lower die limited block；Described Lower mold has two, is symmetricly set on the lower die holder of lower die limited block two sides；The lower die fixed block is arranged in lower die On the lower die holder for having outside, and compress the lateral surface of lower mold.
Further, the centre of the upper die holder offers upper limit position groove, and upper mold limited block is located in upper limit position groove；It is described The centre of lower die holder offer lower limit slot, lower die limited block is located in lower limit slot.
Further, the lower mold is provided at least two on the one side of lower die limited block along its length Material blocking block is equipped with backgauge screw on material blocking block.
A kind of application method of the dedicated Bending Mould of safe door deckle board, operating procedure are as follows:
1. upper die component and lower mold assemblies are assembled respectively, and check to ensure that each components connection is reliable；
2. lower mold assemblies are placed on the workbench of hydraulic press, and by the T-slot on workbench using bolt will under Membrane module is fixed；
3. lifting on upper die component to lower mold assemblies, upper die component position is adjusted, makes the stamping surface and lower mold of upper mold The cooperation of punching press groove face it is close；
After 4. hydraulic machine slide block down compresses upper die component, upper die component is fixed on slider of hydraulic press by bolt, Sliding block drives upper die component to move up and down 1-3 times, it is ensured that upper mold and lower mold cooperation position are accurate；
5. by be processed with a thickness of 1.8-2mm, using Cr25Mo3One end of the plate of Ti preparation is placed on the upper of lower mold On end face, after adjusting bending position, the other end of plate is compressed by material pressing device；
6. upper mold moves down under the driving force effect of hydraulic press, the third inclined-plane of upper mold stamping surface and the 4th is tiltedly Face intersection starts to contact plate and squeeze, when upper mold continues traveling downwardly intersection and plate to the first inclined-plane and the second inclined-plane When contact, material pressing device unclamps plate, and upper mold continues traveling downwardly, until completing bending, keeps 15~20s；
7. hydraulic press drives upper mold fast fallback, plate is removed；
8. repeating the above steps 5., 6. and 7., bending operation is carried out to the plate other end, safe door deckle board processes At.
Further, the step 6. in, tiltedly from third inclined-plane and the 4th inclined-plane intersection and web contact to first In the intersection on face and the second inclined-plane and web contact period, upper mold at the uniform velocity work is into speed V1=10mm/s, from first The intersection on inclined-plane and the second inclined-plane is denoted as t with web contact to the time that upper mold goes downwards to extreme position1, in time period The work speed of upper mold is V2, meetT value range is [0, t1]。
Although the Bending Processing of safe door deckle board can be completed well using above-mentioned particular manufacturing craft and method, exist One problem is exactly that access times are more, and the working portion of upper mold and lower mold causes because stress is larger, is easily damaged Mold is needed replacing in use for some time, has in practice been verified that the upper mold using common material and heat treatment process processing, The corner angle and third inclined-plane that the first inclined-plane for upper mold occur and the second inclined-plane have a common boundary are easy for when using about 1600 times There is phenomena such as bursting apart, wearing in the corner angle having a common boundary with the 4th inclined-plane, equally, the second groove face and third groove face intersection of lower mold Corner angle also there is phenomena such as bursting apart, wearing.Although the present invention considers factors above in structure design, and can be certain Crackle tendency is prevented in degree, but still to rely on reasonable material composition and heat treatment process, so specially for the present invention With the design feature of mold, the present invention makes every effort to find a kind of new material and heat treatment process.
A kind of processing method of the dedicated Bending Mould of safe door deckle board, for processing upper mold or lower mold, step Are as follows:
(1) raw material of blank prepare
It is made using rough forging, the component and mass percent of the rough forging are as follows: C 0.38~0.45%, Si 0.25~0.35%, Mn 0.6~0.71%, S≤0.023%, P≤0.021%, Cr 1.34~1.48%, Mo 0.35~ 0.48%, ZrO20.08~0.11%, surplus Fe；
(2) annealing of rough forging
It will be annealed to it through rough forging obtained in step (1) by annealing furnace, annealing temperature is 825~ 835 DEG C, annealing time is 4~4.5h, is cooled to 200~300 DEG C in the lehr, is air-cooled to room temperature after keeping the temperature 0.5~1.2h；
(3) preliminary working of rough forging
Rough forging in step (2) is processed into the primary shape of mold on lathe, each face retains the surplus of 1.5mm；
(4) heat treatment of mold
Obtained mold will be machined through step (3), 1.5-2.5h is kept the temperature after being first to heat to 440-530 DEG C, is then added again Heat arrives 650-700 DEG C of heat preservation 1.5-2h, is heated to 890-910 DEG C, quenches after keeping the temperature 30-45min, oil quenching, passes through again after cooling Subzero treatment is crossed, the temperature of subzero treatment is -206 to -220 DEG C, keeps 1.2-1.5h, is restored to room temperature in air, once Tempering, tempering temperature are 140-160 DEG C, place 0.5-1h after being cooled to room temperature, then carry out double tempering, tempering temperature 175- 195℃；
(5) deep processing of mold
The oxide layer on step (4) processing rear mold surface is removed, and is assembled on grinding machine, carries out grinding, respectively Face retains the surplus of 0.7-1mm, after placing at least 1 day, carries out grinding again to required size；
(6) detection of mold, detecting size and degree after qualified, complete processing.
Further, in the step (1) rough forging component and mass percent are as follows: C 0.4%, Si 0.3%, Mn 0.65%, S≤0.023%, P≤0.021%, Cr 1.4%, Mo 0.42%, ZrO20.1%, surplus Fe.
Further, the annealing temperature of rough forging is 830 DEG C in the step (2), and annealing time 4.2h is being moved back It is cooled to 250 DEG C in stove, is carried out after heat preservation 0.8h air-cooled；The heat treatment of mold is to be first to heat to 480 DEG C in the step (4) After keep the temperature 2h, be then heated to 670 DEG C of heat preservation 1.8h, be heated to 900 DEG C, quenched after keeping the temperature 40min, oil quenching, after cooling Using subzero treatment, the temperature of subzero treatment is -213 DEG C, keeps 1.3h, is restored to room temperature in air, primary to be tempered, and is returned Fiery temperature is 150 DEG C, places 0.7h progress double tempering after being cooled to room temperature, tempering temperature is 184 DEG C.
Further, in the step (4), oil quenching, the constituent and each component of quenching oil are carried out using quenching oil Mass fraction are as follows: 26-28 parts of base oil, cold agent 0.3-0.7 parts again is urged, is blacked agent 0.1-0.2 parts multiple, 0.3-0.6 parts of brightener, 3-3.5 parts of surfactant；Wherein, urging cold multiple agent is dicyclopentadiene and the EPDM mixture of 3:2 in mass ratio, is blacked Multiple agent is acrylate, coloring agent and the wetting agent mixture of 2:3:1 in mass ratio, and brightener is petroleum sulfonate and binary acid The mixture of 1:2 in mass ratio, surfactant are polyoxylethylene abietate.
3, beneficial effect
Compared with the prior art, the invention has the benefit that
(1) dedicated Bending Mould of the invention passes through the stamping surface of special upper mold and the punching press groove face of lower mold, energy For time processing at safe door deckle board workpiece to be processed, precision is high, does not need secondary artificial treatment, does not have to workpiece surface Damage, it is easy to operate, it is at low cost；More importantly due to elastic reaction existing for plate itself, using general mould bending Afterwards, bending angle deviation is larger, needs to be corrected, and according to conventional multiple bending, accumulated tolerance is big, workpiece after processing Error is big, and mold of the invention considers plate flexible deformation by optimization design folding surface turning point angle, is after bending Required machining angle, without correction, and one-pass molding, no cumulative errors, precision are high；
(2) dedicated Bending Mould of the invention, positioning when for convenience of sheet metal bending, along length on the one side of lower mold Degree direction is provided with material blocking block, and backgauge screw is equipped on material blocking block, by adjusting backgauge screw, can adjust sheet metal bending position It sets；
(3) application method of the invention can be used the dedicated Bending Mould and quickly and efficiently process safe door deckle board, Bending is high-efficient, quality of finished product good.
(4) processing method of the dedicated Bending Mould of safe door deckle board of the present invention, the upper mold or lower die processed have Higher hardness, toughness and wearability, and hardness is evenly distributed, processing uses more than ten thousand times or more still normal, service life height.
Detailed description of the invention
Fig. 1 is the safe door deckle board molded part of required processing；
Fig. 2 is a kind of upper die component structural schematic diagram of the dedicated Bending Mould of safe door deckle board of the present invention；
Fig. 3 is a kind of lower mold assemblies structural schematic diagram of the dedicated Bending Mould of safe door deckle board of the present invention；
Fig. 4 is status diagram when a kind of dedicated Bending Mould of safe door deckle board of the present invention starts bending；
Fig. 5 is status diagram when a kind of dedicated Bending Mould of safe door deckle board of the present invention completes bending.
Label in attached drawing respectively indicates are as follows:
1, upper die component；110, upper die holder；120, upper mold limited block；130, upper mold；131, the first inclined-plane；132, second Inclined-plane；133, third inclined-plane；134, the 4th inclined-plane；140, upper mold fixed block；
2, lower mold assemblies；210, lower die holder；220, lower die limited block；230, lower mold；231, the first groove face；232, second Groove face；233, third groove face；234, the 4th groove face；240, lower die fixed block；250, material blocking block；260, backgauge screw.
Specific embodiment
The present invention is further described below with attached drawing combined with specific embodiments below.
Embodiment 1
As shown in Figure 2 and Figure 3, a kind of dedicated Bending Mould of safe door deckle board of the present embodiment, including 1 He of upper die component Lower mold assemblies 2；
Wherein, the upper die component 1 includes upper mold 130, and the lower end surface of the upper mold 130 is stamping surface, from Side is sequentially connected and is formed by the first inclined-plane 131, the second inclined-plane 132, third inclined-plane 133 and the 4th inclined-plane 134 to the other side, the Angle between 130 side of one inclined-plane 131 and upper mold is 240 °, and the angle between the first inclined-plane 131 and the second inclined-plane 132 is 266 °, the angle between the second inclined-plane 132 and third inclined-plane 133 is 91 °, and the 4th inclined-plane 134 is parallel with the second inclined-plane 132, the The intersection position on one inclined-plane 131 and the second inclined-plane 132 is higher than the intersection position on third inclined-plane 133 and the 4th inclined-plane 134.
The lower mold assemblies 2 include lower mold 230, and the upper surface of lower mold 230 is provided with the punching press with upper mold 130 The punching press groove face that face matches, the punching press groove face is from side to the other side by the first groove face 231, the second groove face 232, third groove face 233 and the 4th groove face 234 be sequentially connected composition, the angle between the first groove face 231 and lower 230 upper surface of mold is 150 °, Angle between one groove face 231 and the second groove face 232 is 94 °, and the angle between the second groove face 232 and third groove face 233 is 269 °, the 4th groove face 234 is parallel with the second groove face 232.
As shown in Figure 1, in the safe door deckle board processed needed for us, the angle of third bending section C and plate face is 93 °, The angle of second bending section B and third bending section C are that the angle between 270 ° and the first bending section A and the second bending section B is equal It is 90 °, and in the upper mold 130 of the present embodiment, the angle between the first inclined-plane 131 and the second inclined-plane 132 is 266 °, and second tiltedly Angle between face 132 and third inclined-plane 133 be 91 ° and lower mold 230 in, the first groove face 231 and the second groove face 232 it Between angle be 94 °, the angle between the second groove face 232 and third groove face 233 is 269 °, it is clear that poor with above-mentioned angle It is different.It needs to illustrate herein, due to elastic reaction existing for plate itself, after general mould bending, bending angle is inclined Difference is larger, needs to be corrected, and the mold of the present embodiment considers that plate flexible deformation itself is turned by optimization design folding surface Angle at folding, machining angle needed for being after bending, without correcting, and one-pass molding, so there is above situation.
In the present embodiment, to make bending more smooth, in upper mold 130, the second inclined-plane 132 and third inclined-plane 133 Intersection be arranged rectangular recess；Equally, in lower mold 230, the intersection and of the first groove face 231 and the second groove face 232 The intersection of three groove faces 233 and the 4th groove face 234 is equipped with rectangular recess.The withdrawing when rectangular recess is like turnery processing Slot plays the role of making a concession space in bending place in bending process, since bending part plate stretches, if the not square Shape slot will lead to bending difficulty, and friction noise is big, and plate generates abrasion, and larger, such design is deformed after bending, simply It is ingenious, it can effectively avoid the above problem.
It is worth noting that general mold contains only a pair of of mutual cooperation upper/lower die, one workpiece of time processing, and examine Considering safe door deckle board is to carry out bending at both ends, while end bending shape is irregular, and the present embodiment, which comprehensively considers, to be added The service life of work efficiency rate and mold, innovative two upper molds 130 of use cooperate with two lower molds 230 respectively.Specifically, on Membrane module 1 further includes upper die holder 110 and upper mold fixed block 140, and the centre of upper die holder 110 offers upper limit position groove, upper limit position groove It is inside provided with upper mold limited block 120, upper mold limited block 120 is detachably connected by bolt with upper die holder 110, and upper limit position groove is set Meter may make 120 accurate positioning of upper mold limited block, also eliminates and is bolted gap, connect relatively reliable；Two upper molds 130 are right Title is arranged on the upper die holder 110 of 120 two sides of upper mold limited block, connect also by bolt with upper die holder 110, upper mold fixed block 140 are bolted on the upper die holder 110 in 130 outside of upper mold, and upper mold fixed block 140 passes through bolt and upper mold 130 Connection, upper mold 130 can be pressed on the side of upper mold limited block 120 by tightening bolt.Under the lower mold assemblies 2 further include Die holder 210 and lower die fixed block 240, the centre of lower die holder 210 offer lower limit slot, install lower die limited block in lower limit slot 220；The lower mold 230 of described two is symmetricly set on the lower die holder 210 of 220 two sides of lower die limited block, and solid by bolt Fixed, lower die fixed block 240 is bolted on the lower die holder 210 in lower 230 outside of mold, and lower die fixed block 240 passes through spiral shell Bolt is connect with lower mold 230, and tightening bolt can be pressed on lower mold 230 on the side of lower die limited block 220.According to safety cabinet The design feature of Door frame board carries out this design, once can two workpiece of bending, efficiency improve 2 times, it is often more important that, two upper molds 130, two lower molds 230 of tool use symmetric design, and in bending process, mold component in the horizontal direction is cancelled completely, To only downward pressure, is conducive to improve bending precision, also improves die life.
In addition, being positioned for convenience of sheet metal bending, the lower mold 230 edge on the one side of lower die limited block 220 Length direction is provided at least two material blocking blocks 250, is equipped with backgauge screw 260 on material blocking block 250.According to required bending position It sets, adjusts backgauge screw 260, require to find bending position accurately without placing plate every time, greatly improve bending efficiency, Improve bending precision；And multiple adjusting backgauge screws 260 are adjusted, it may make sheet metal bending line and sheet end surface at certain Angle extends bending range.
The dedicated Bending Mould of safe door deckle board of the present embodiment passes through the stamping surface and lower die of special shape upper mold 130 The cooperation of the punching press groove face of tool 230, for energy time processing at safe door deckle board workpiece to be processed, precision is high, does not need two Secondary artificial treatment does not damage workpiece surface, easy to operate, at low cost.
Because the mold is particular manufacturing craft, the plate thickness of institute's Bending Processing is between 1.8-2mm, material Cr25Mo3Ti。 Below with reference to Fig. 4 and Fig. 5 by taking 2mm thickness plate as an example, illustrate how it carries out bending operation.
A kind of application method of the dedicated Bending Mould of safe door deckle board, operating procedure are as follows:
1. upper die component 1 and lower mold assemblies 2 are assembled according to above structure respectively, and check to ensure that each components connect It connects reliable；
2. lower mold assemblies 2 are placed on the workbench of hydraulic press, and by the T-slot on workbench using bolt will under Membrane module 2 is fixed；
3. lifting on upper die component 1 to lower mold assemblies 2, adjust 1 position of upper die component, make the stamping surface of upper mold 130 with The punching press groove face cooperation of lower mold 230 is close；
4. after hydraulic machine slide block down compresses upper die component 1, upper die component 1 is fixed to slider of hydraulic press by bolt On, sliding block drives upper die component 1 to move up and down 1-3 times, it is ensured that upper mold 130 and lower 230 cooperation position of mold are accurate；
5. firstly, the position of bending as needed, backgauge screw 260 is adjusted in place；It then, will be with a thickness of 2mm, material For Cr25Mo3One end of the plate to be processed of Ti is placed on the upper surface of lower mold 230, and plate is tightly abutted against backgauge screw On 260；Finally, compressing the other end of plate by material pressing device；
6. upper mold 130 moves down under the driving force effect of hydraulic press, the third inclined-plane of 130 stamping surface of upper mold 133 start to contact and plate and squeeze with 134 intersection of the 4th inclined-plane, when upper mold 130 is continued traveling downwardly to the first inclined-plane 131 and the When the intersection and web contact on two inclined-planes 132, material pressing device unclamps plate, and upper mold 130 continues traveling downwardly, until completing folding It is curved, keep 15~20s.
In this step, from third inclined-plane 133 and 134 intersection of the 4th inclined-plane and web contact to the first inclined-plane 131 and In the intersection on two inclined-planes 132 and web contact period, the at the uniform velocity work of upper mold 130 is into speed V1=10mm/s, from first The intersection on inclined-plane 131 and the second inclined-plane 132 is denoted as t with web contact to the time that upper mold 130 goes downwards to extreme position1, The work speed of upper mold 130 is V in time period2, meetT value range is [0, t1].It is real T in border1Generally between 1.5-2s, t is taken here1=2s, then, and V2=10-2.5t2Mm/s, i.e. 130 downstream rate of upper mold by Gradually decrease up to stopping.Due to being located at outside mold in the intersection and web contact on the first inclined-plane 131 and the second inclined-plane 132 The plate needs of side upwarp, and must unclamp material pressing device at this time, due to plate end bending shape asymmetry, if upper mold at this time It is excessive to have 130 downstream rates, will lead to plate positional shift, to cause bending inaccurate, inventor is touched by last practice The velocity variations rule that rope sums up above-mentioned upper mold 130 can effectively avoid plate under the premise of guaranteeing maximum bending efficiency The generation of drift condition.
7. hydraulic press drives 130 fast fallback of upper mold, plate is removed；
8. repeating the above steps 5., 6. and 7., bending operation is carried out to the plate other end, safe door deckle board processes At.
Safe door deckle board obtained after processing is detected, the angle of third bending section C and plate face is 92.9 °, Angle between second bending section B and third bending section C is 270 °, the angle between the first bending section A and the second bending section B It is 90.2 °, meets required precision, product is qualified.
Embodiment 2
Although using in embodiment 1 particular manufacturing craft and method can complete the Bending Processing of safe door deckle board well, But have a problem that, be exactly that access times are more, the working portion of upper mold 130 and lower mold 230 because stress it is larger, It is easily damaged, causes to need replacing mold in use for some time, have in practice been verified that using common material and heat treatment process The upper mold of processing is easy for the first inclined-plane 131 for upper mold 130 occur and the second inclined-plane when using about 1600 times There is phenomena such as bursting apart, wearing in the corner angle that 132 corner angle having a common boundary and third inclined-plane 133 and the 4th inclined-plane 134 have a common boundary, equally, under Also there is phenomena such as bursting apart, wearing in the corner angle of 233 intersection of the second groove face 232 and third groove face of mold 230.Although embodiment Mold consider factors above in structure design, and crackle tendency can be prevented to a certain extent, but still will be according to Rely reasonable material composition and heat treatment process, so the present embodiment makes every effort to find according to the design feature of above-mentioned particular manufacturing craft A kind of new material and heat treatment process.The processing method of upper mold 130 or lower mold 230 in the mold is first to forge, so It is reprocessed into the shape of all parts afterwards, then refines, finally assembles.Wherein since upper mold 130 and lower mold 230 needs are higher Hardness, toughness and wearability, need special treatment process, below by taking the processing of upper mold 130 as an example, carry out specifically It is bright:
A kind of processing method of the dedicated Bending Mould of safe door deckle board, processes upper mold 130, the steps include:
(1) raw material of blank prepare
It is made using rough forging, the component and mass percent of the rough forging are as follows: C 0.38%, Si 0.25%, Mn 0.6%, S≤0.023%, P≤0.021%, Cr 1.34%, Mo 0.35%, ZrO20.08%, surplus Fe；
(2) annealing of rough forging
It will anneal by annealing furnace to it through rough forging obtained in step (1), annealing temperature is 825 DEG C, Annealing time is 4h, is cooled to 200 DEG C in the lehr, is air-cooled to room temperature after keeping the temperature 0.5h；
(3) preliminary working of rough forging
Rough forging in step (2) is processed into the primary shape of mold on lathe, each face retains the surplus of 1.5mm；
(4) heat treatment of mold
Obtained mold will be machined through step (3), 1.5h is kept the temperature after being first to heat to 440 DEG C, is then heated to 650 DEG C 1.5h is kept the temperature, is heated to 890 DEG C, is quenched after keeping the temperature 30min, oil quenching, using subzero treatment, the temperature of subzero treatment after cooling Degree is -206 DEG C, keeps 1.2h, is restored to room temperature in air, primary to be tempered, and tempering temperature is 140 DEG C, after being cooled to room temperature 0.5h is placed, then carries out double tempering, tempering temperature is 175 DEG C.
In this step, oil quenching, the constituent and each component mass fraction of quenching oil are as follows: base oil are carried out using quenching oil (VHVI) 26 parts, cold multiple 0.3 part of agent is urged, black multiple 0.1 part of agent, and 0.3 part of brightener, 3 parts of surfactant；Wherein, it urges cold multiple Agent is dicyclopentadiene and the EPDM mixture of 3:2 in mass ratio, and the multiple agent that blacks is acrylate, coloring agent (BlackAFR, the oil stain of BASF AG's production) and wetting agent (oil-soluble azone) mixing of 2:3:1 in mass ratio Object, brightener are petroleum sulfonate and the binary acid mixture of 1:2 in mass ratio, and surfactant is rosin acid polyoxyethylene Ester.
The quenching oil can make upper mold 130 or lower mold 230 quenching just enter oil when with the cooling velocity of 65-85 DEG C/s into Row cooling, and the temperature that the surface-active nigrescence preparation in quenching oil absorbs piece surface obtains higher energy rapidly in part Surface aggregation at fine and close membrane structure, while piece surface temperature with quenching oil heat convection and provide nigrescence preparation heat Afterwards, rapid drop in temperature, the transition point for effectively passing over mould steel heat treatment C curve obtain ideal microstructure form.
(5) deep processing of mold
The oxide layer on step (4) processing rear mold surface is removed, and is assembled on grinding machine, carries out grinding, respectively Face retains the surplus of 0.7mm, after placing 1 day, carries out grinding again to required size；
(6) detection of mold, detecting size and degree after qualified, complete processing.
The hardness for detecting obtained upper mold is HRC59, and each surface hardness difference uses the upper mold within ± 1 Processing using after 10,000 times its still can normal use, the service life is high.
Embodiment 3
A kind of processing method of dedicated Bending Mould of safe door deckle board of the present embodiment, processes lower mold 230, It the steps include:
(1) raw material of blank prepare
It is made using rough forging, the component and mass percent of the rough forging are as follows: C 0.4%, Si 0.3%, Mn 0.65%, S≤0.023%, P≤0.021%, Cr 1.4%, Mo 0.42%, ZrO20.1%, surplus Fe；
(2) annealing of rough forging
It will anneal by annealing furnace to it through rough forging obtained in step (1), annealing temperature is 830 DEG C, Annealing time is 4.2h, is cooled to 250 DEG C in the lehr, is air-cooled to room temperature after keeping the temperature 0.8h；
(3) preliminary working of rough forging
Rough forging in step (2) is processed into the primary shape of mold on lathe, each face retains the surplus of 1.5mm；
(4) heat treatment of mold
Obtained mold will be machined through step (3), 2h is kept the temperature after being first to heat to 480 DEG C, is then heated to 670 DEG C of guarantors Warm 1.8h is heated to 900 DEG C, quenches after keeping the temperature 40min, oil quenching, using subzero treatment, the temperature of subzero treatment after cooling It is -213 DEG C, keeps 1.3h, be restored to room temperature in air, primary to be tempered, tempering temperature is 150 DEG C, is put after being cooled to room temperature It sets 0.7h and carries out double tempering, tempering temperature is 184 DEG C；
In this step, oil quenching, the constituent and each component mass fraction of quenching oil are as follows: base oil are carried out using quenching oil (VHVI) 27 parts, cold multiple 0.5 part of agent is urged, black multiple 0.2 part of agent, and 0.4 part of brightener, 3.5 parts of surfactant；Wherein, it urges cold Multiple agent is dicyclopentadiene and the EPDM mixture of 3:2 in mass ratio, and the multiple agent that blacks is acrylate, coloring agent (BlackAFR, the oil stain of BASF AG's production) and wetting agent (oil-soluble azone) mixing of 2:3:1 in mass ratio Object, brightener are petroleum sulfonate and the binary acid mixture of 1:2 in mass ratio, and surfactant is rosin acid polyoxyethylene Ester.
(5) deep processing of mold
The oxide layer on step (4) processing rear mold surface is removed, and is assembled on grinding machine, carries out grinding, respectively Face retains the surplus of 0.8mm, after placing 1.5 days, carries out grinding again to required size；
(6) detection of mold, detecting size and degree after qualified, complete processing.
The hardness for detecting obtained lower mold is HRC60, and each surface hardness difference uses the lower mold within ± 1 Processing using after 10,000 times its still can normal use, the service life is high.
Embodiment 4
A kind of processing method of dedicated Bending Mould of safe door deckle board of the present embodiment, processes upper mold 130, It the steps include:
(1) raw material of blank prepare
It is made using rough forging, the component and mass percent of the rough forging are as follows: C 0.45%, Si 0.35%, Mn 0.71%, S≤0.023%, P≤0.021%, Cr 1.48%, Mo 0.48%, ZrO20.11%, surplus Fe；
(2) annealing of rough forging
It will anneal by annealing furnace to it through rough forging obtained in step (1), annealing temperature is 835 DEG C, Annealing time is 4.5h, is cooled to 300 DEG C in the lehr, is air-cooled to room temperature after keeping the temperature 1.2h；
(3) preliminary working of rough forging
Rough forging in step (2) is processed into the primary shape of mold on lathe, each face retains the surplus of 1.5mm；
(4) heat treatment of mold
Obtained mold will be machined through step (3), 2.5h is kept the temperature after being first to heat to 530 DEG C, is then heated to 700 DEG C 2h is kept the temperature, is heated to 910 DEG C, is quenched after keeping the temperature 45min, oil quenching, using subzero treatment, the temperature of subzero treatment after cooling It is -220 DEG C, keeps 1.5h, be restored to room temperature in air, primary to be tempered, tempering temperature is 160 DEG C, is put after being cooled to room temperature 1h is set, then carries out double tempering, tempering temperature is 195 DEG C；
In this step, oil quenching, the constituent and each component mass fraction of quenching oil are as follows: base oil are carried out using quenching oil (VHVI) 28 parts, cold multiple 0.7 part of agent is urged, black multiple 0.2 part of agent, and 0.6 part of brightener, 3 parts of surfactant；Wherein, it urges cold multiple Agent is dicyclopentadiene and the EPDM mixture of 3:2 in mass ratio, and the multiple agent that blacks is acrylate, coloring agent (BlackAFR, the oil stain of BASF AG's production) and wetting agent (oil-soluble azone) mixing of 2:3:1 in mass ratio Object, brightener are petroleum sulfonate and the binary acid mixture of 1:2 in mass ratio, and surfactant is rosin acid polyoxyethylene Ester.
(5) deep processing of mold
The oxide layer on step (4) processing rear mold surface is removed, and is assembled on grinding machine, carries out grinding, respectively Face retains the surplus of 1mm, after placing at least 1 day, carries out grinding again to required size；
(6) detection of mold, detecting size and degree after qualified, complete processing.
The hardness for detecting obtained upper mold is HRC58, and each surface hardness difference uses the upper mold within ± 1.5 Tool processing using after 10,000 times its still can normal use, the service life is high.
Example of the present invention is only that preferred embodiments of the present invention will be described, not to present inventive concept and Range is defined, and under the premise of not departing from design philosophy of the present invention, this field engineers and technicians are to technology of the invention The various changes and improvements that scheme is made should all fall into protection scope of the present invention.

Claims (7)

1. a kind of application method of the dedicated Bending Mould of safe door deckle board, operating procedure are as follows:
1. upper die component (1) and lower mold assemblies (2) are assembled respectively, and check to ensure that each components connection is reliable；
2. lower mold assemblies (2) are placed on the workbench of hydraulic press, and use bolt by lower die by the T-slot on workbench Component (2) is fixed；
3. lifting on upper die component (1) to lower mold assemblies (2), upper die component (1) position is adjusted, the punching press of upper mold (130) is made The cooperation of the punching press groove face of face and lower mold (230) is close；
4. after hydraulic machine slide block down compresses upper die component (1), upper die component (1) is fixed to slider of hydraulic press by bolt On, sliding block drives upper die component (1) to move up and down 1-3 times, it is ensured that upper mold (130) and lower mold (230) cooperation position are accurate；
5. by be processed with a thickness of 1.8-2mm, using Cr25Mo3One end of the plate of Ti preparation is placed on the upper of lower mold (230) On end face, after adjusting bending position, the other end of plate is compressed by material pressing device；
6. upper mold (130) moves down under the driving force effect of hydraulic press, the third inclined-plane of upper mold (130) stamping surface (133) start to contact plate with the 4th inclined-plane (134) intersection and squeeze, when upper mold (130) is continued traveling downwardly to the first inclined-plane (131) with the intersection and web contact of the second inclined-plane (132) when, material pressing device unclamps plate, under upper mold (130) continues Row keeps 15~20s until completing bending；
7. hydraulic press drives upper mold (130) fast fallback, plate is removed；
8. repeating the above steps 5., 6. and 7., bending operation is carried out to the plate other end, safe door deckle board completes the process；
The step 6. in, from third inclined-plane (133) and the 4th inclined-plane (134) intersection and web contact to the first inclined-plane (131) and in the intersection of the second inclined-plane (132) and web contact period, upper mold (130) at the uniform velocity work is into speed V1= 10mm/s goes downwards to pole to upper mold (130) from the intersection and web contact of the first inclined-plane (131) and the second inclined-plane (132) The time of extreme position is denoted as t1, the work speed of upper mold (130) is V in time period2, meetMm/s, t Value range is [0, t1]；
The used dedicated Bending Mould of safe door deckle board includes upper die component (1) and lower mold assemblies (2)；The upper mold group Part (1) includes upper mold (130), and lower mold assemblies (2) include lower mold (230)；
The lower end surface of the upper mold (130) is stamping surface, by the first inclined-plane (131), the second inclined-plane from side to the other side (132), third inclined-plane (133) and the 4th inclined-plane (134) are sequentially connected composition, the first inclined-plane (131) and upper mold (130) side Between angle be 240 °, the angle between the first inclined-plane (131) and the second inclined-plane (132) is 266 °, the second inclined-plane (132) with Angle between third inclined-plane (133) is 91 °, and the 4th inclined-plane (134) is parallel with the second inclined-plane (132), the first inclined-plane (131) with The intersection position on the second inclined-plane (132) is higher than the intersection position of third inclined-plane (133) and the 4th inclined-plane (134)；
The upper surface of the lower mold (230) is provided with the punching press groove face to match with the stamping surface of upper mold (130), the punching Indent face is from side to the other side by the first groove face (231), the second groove face (232), third groove face (233) and the 4th groove face (234) it is sequentially connected composition, the angle between the first groove face (231) and lower mold (230) upper surface is 150 °, the first groove face (231) angle between the second groove face (232) is 94 °, and the angle between the second groove face (232) and third groove face (233) is 269 °, the 4th groove face (234) is parallel with the second groove face (232)；
The upper die component (1) further includes upper die holder (110) and upper mold fixed block (140), and upper die holder (110) is equipped with upper mold Limited block (120)；There are two upper mold (130) tools, is symmetricly set on the upper die holder of upper mold limited block (120) two sides (110) on；On the upper die holder (110) that the upper mold fixed block (140) is arranged on the outside of upper mold (130), and compress upper mold Has the lateral surface of (130)；
The lower mold assemblies (2) further include lower die holder (210) and lower die fixed block (240), and lower die holder (210) is equipped with lower die Limited block (220)；There are two lower mold (230) tools, is symmetricly set on the lower die holder of lower die limited block (220) two sides (210) on；On the lower die holder (210) that the lower die fixed block (240) is arranged on the outside of lower mold (230), and compress lower die Has the lateral surface of (230).
2. a kind of application method of dedicated Bending Mould of safe door deckle board according to claim 1, it is characterised in that: institute The centre for stating upper die holder (110) offers upper limit position groove, and upper mold limited block (120) is located in upper limit position groove；The lower die holder (210) centre offers lower limit slot, and lower die limited block (220) is located in lower limit slot.
3. a kind of application method of dedicated Bending Mould of safe door deckle board according to claim 1 or 2, feature exist In: the lower mold (230) is provided at least two backgauges on the one side of lower die limited block (220) along its length Block (250) is equipped with backgauge screw (260) on material blocking block (250).
4. a kind of processing method of the dedicated Bending Mould of safe door deckle board, for processing upper mold described in claim 1 (130) or lower mold (230), the steps include:
(1) raw material of blank prepare
It is made using rough forging, the component and mass percent of the rough forging are as follows: C 0.38~0.45%, Si 0.25~ 0.35%, Mn 0.6~0.71%, S≤0.023%, P≤0.021%, Cr 1.34~1.48%, Mo 0.35~0.48%, ZrO20.08~0.11%, surplus Fe；
(2) annealing of rough forging
It will anneal by annealing furnace to it through rough forging obtained in step (1), annealing temperature is 825~835 DEG C, Annealing time is 4~4.5h, is cooled to 200~300 DEG C in the lehr, is air-cooled to room temperature after keeping the temperature 0.5~1.2h；
(3) preliminary working of rough forging
Rough forging in step (2) is processed into the primary shape of mold on lathe, each face retains the surplus of 1.5mm；
(4) heat treatment of mold
Obtained mold will be machined through step (3), 1.5-2.5h is kept the temperature after being first to heat to 440-530 DEG C, is then heated to 650-700 DEG C of heat preservation 1.5-2h is heated to 890-910 DEG C, quenches after keeping the temperature 30-45min, oil quenching, using depth after cooling Cold treatment, the temperature of subzero treatment are -206 to -220 DEG C, keep 1.2-1.5h, are restored to room temperature in air, primary to be tempered, Tempering temperature is 140-160 DEG C, places 0.5-1h after being cooled to room temperature, then carry out double tempering, tempering temperature 175-195 ℃；
(5) deep processing of mold
The oxide layer on step (4) processing rear mold surface is removed, and is assembled on grinding machine, grinding is carried out, each face is protected The surplus of 0.7-1mm is stayed, after placing at least 1 day, carries out grinding again to required size；
(6) detection of mold, detecting size and degree after qualified, complete processing.
5. a kind of processing method of dedicated Bending Mould of safe door deckle board according to claim 4, it is characterised in that: institute The component and mass percent of rough forging in the step of stating (1) are as follows: C 0.4%, Si 0.3%, Mn 0.65%, S≤ 0.023%, P≤0.021%, Cr 1.4%, Mo 0.42%, ZrO20.1%, surplus Fe.
6. a kind of processing method of dedicated Bending Mould of safe door deckle board according to claim 4, it is characterised in that: institute The annealing temperature of rough forging is 830 DEG C, annealing time 4.2h in the step of stating (2), is cooled to 250 DEG C in the lehr, is protected It is carried out after warm 0.8h air-cooled；The heat treatment of mold is to keep the temperature 2h after being first to heat to 480 DEG C in the step (4), is then added again Heat is heated to 900 DEG C to 670 DEG C of heat preservation 1.8h, quenches after keeping the temperature 40min, oil quenching, deep using subzero treatment after cooling The temperature of cold treatment is -213 DEG C, keeps 1.3h, is restored to room temperature in air, primary to be tempered, and tempering temperature is 150 DEG C, cold But double tempering is carried out to placement 0.7h after room temperature, tempering temperature is 184 DEG C.
7. a kind of processing method of the dedicated Bending Mould of safe door deckle board, feature according to claim 4 or 5 or 6 It is: in the step (4), oil quenching, the constituent and each component mass fraction of quenching oil are as follows: base is carried out using quenching oil 26-28 parts of plinth oil, cold agent 0.3-0.7 parts again is urged, is blacked agent 0.1-0.2 parts multiple, 0.3-0.6 parts of brightener, surfactant 3- 3.5 part；Wherein, urging cold multiple agent is dicyclopentadiene and the EPDM mixture of 3:2 in mass ratio, and the multiple agent that blacks is acrylic acid Ester, coloring agent and the wetting agent mixture of 2:3:1 in mass ratio, brightener are petroleum sulfonate and binary acid 1:2 in mass ratio Mixture, surfactant is polyoxylethylene abietate.
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