CN110014112A - A kind of pulse current auxiliary microsecond delay mold and method - Google Patents

A kind of pulse current auxiliary microsecond delay mold and method Download PDF

Info

Publication number
CN110014112A
CN110014112A CN201910434323.4A CN201910434323A CN110014112A CN 110014112 A CN110014112 A CN 110014112A CN 201910434323 A CN201910434323 A CN 201910434323A CN 110014112 A CN110014112 A CN 110014112A
Authority
CN
China
Prior art keywords
plate
cavity plate
mold
punch
forging stock
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
CN201910434323.4A
Other languages
Chinese (zh)
Inventor
徐杰
郭斌
单德彬
臧鑫
陈万吉
包建兴
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.)
Harbin Institute of Technology
Original Assignee
Harbin Institute of Technology
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 Harbin Institute of Technology filed Critical Harbin Institute of Technology
Priority to CN201910434323.4A priority Critical patent/CN110014112A/en
Publication of CN110014112A publication Critical patent/CN110014112A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor

Abstract

The present invention discloses a kind of pulse current auxiliary microsecond delay mold and method.Mold includes: upper die component, lower mold assemblies, formed punch, cavity plate and the pulse power.Upper die component includes punch fixing plate, and formed punch is inlaid on punch fixing plate;Lower mold assemblies include cavity plate fixed block, and cavity plate is fixedly arranged on cavity plate fixed block, and the type chamber of cavity plate is located at the underface of formed punch, and type chamber is for accommodating forging stock to be formed;One end of the pulse power is electrically connected with punch fixing plate, and the other end of the pulse power is electrically connected with cavity plate fixed block.The present invention quickly heats forging stock to be formed using pulse current, and heating time is short, and temperature rise amount is big, and die forming is high-efficient, can greatly improve the production efficiency of small thin and long shafts part and form quality, reduce production cost.

Description

A kind of pulse current auxiliary microsecond delay mold and method
Technical field
The present invention relates to small thin and long shafts part molding fields, assist microsecond delay mould more particularly to a kind of pulse current Tool and method.
Background technique
Small thin and long shafts part connects as micro-satellite cluster transmission shaft, biomedical implant and microelectronic component Fitting etc. has extensive use demand.Wherein, micro-satellite cluster transmission shaft and biomedical implant part mainly use titanium The high intensity difficult-to-machine material such as alloy and high temperature alloy, machining deformation springback capacity is big, and cutting ability is poor, and machining accuracy is difficult to protect Card, and temperature-room type plasticity is poor, and this proposes harshness to Plastic microforming process, mold design and loading method etc. and wants It asks, so that being difficult to realize by the microsecond delay technology that mold applies load merely.Currently, general using conventional hot forming work Skill shapes small thin and long shafts part.But that there are heating speeds is slow, die life is low, elongated for conventional high temperature forming technology Axis squeezes the problems such as being easy cracking.
Summary of the invention
The object of the present invention is to provide a kind of pulse current auxiliary microsecond delay mold and methods, and heating time is short, temperature rise amount Greatly, forming efficiency is high, can greatly improve the production efficiency of small thin and long shafts part, reduces production cost.
To achieve the above object, the present invention provides following schemes:
A kind of pulse current assists microsecond delay mold, the mold include: upper die component, lower mold assemblies, formed punch, cavity plate and The pulse power;Wherein,
The upper die component includes punch fixing plate, and the formed punch is inlaid on the punch fixing plate;
The lower mold assemblies include cavity plate fixed block, and the cavity plate is fixedly arranged on the cavity plate fixed block, and the cavity plate Type chamber be located at the underface of the formed punch, the type chamber is for accommodating forging stock to be formed;
One end of the pulse power is electrically connected with the punch fixing plate, the other end of the pulse power with it is described recessed The electrical connection of mould fixed block.
Optionally, the mold further includes limited post, and the limited post is arranged in the punch fixing plate and the cavity plate Between fixed block.
Optionally, the cavity plate includes fixed die plate insert and detachable die plate insert, the inner wall of the fixed die plate insert Inner wall docking with the detachable die plate insert forms the type chamber.
Optionally, the lower mold assemblies further include: lower bolster, lower insulation plate, lower template, level-one mandril, second level mandril, wedge Shape sliding block and push rod;Wherein,
The cavity plate fixed block, the lower bolster, the lower insulation plate and the lower template are from top to bottom sequentially overlapped and set It sets, the detachable die plate insert is detachably connected on the cavity plate fixed block, and the lower end of the fixed die plate insert is inlaid in The upper surface of the lower bolster;
The region of type chamber described in the lower bolster face offers lower bolster through-hole, and the lower bolster through-hole is for accommodating institute State level-one mandril;
The lower insulation plate through-hole with the lower bolster through-hole face is offered on the lower insulation plate, the second level mandril One end is located in the lower insulation plate through-hole, and the other end of the second level mandril is fixed on the wedge block, the wedge shape Sliding block is located in the cavity of the lower template, and the inclined-plane of the push rod and the wedge block is slidably connected.
Optionally, the mold further includes four guide sleeves and four guide posts, and four guide sleeves are symmetrical with the formed punch On the cope plate, the upper end of each guide sleeve is fixedly connected with the lower surface of the cope plate center symmetric setting, The upper end of each guide post is inserted into respectively in the lower end of a guide sleeve, the lower end of each guide post with it is described under The upper surface of template is fixedly connected.
A kind of pulse current auxiliary micro-forming method, the method are used for the mold, which comprises
The upper die component is connect with press device, forging stock to be formed is placed in the type chamber;
Start the press device, the press device downlink drives formed punch to move downward so that the formed punch with it is described There are precharge pressures between the upper surface of forging stock to be formed;
Starting impulse power supply heats the forging stock to be formed, maintains the temperature of the forging stock to be formed pre- Figuration temperature;
Controlling the press device downlink drives the formed punch to continue to move downward, and makes the forging stock to be formed full of described Type chamber.
Optionally, the pressure that the upper surface that the precharge pressure is applied to the forging stock to be formed generates is 3-5MPa.
Optionally, the predetermined forming temperature is greater than the recrystallization temperature of the forging stock to be formed, and lower than it is described at The fusing point of die forging base.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
Pulse current auxiliary microsecond delay mold provided by the invention and method carry out forging stock to be formed using pulse current Quickly heating, heating time is short, and temperature rise amount is big, and die forming is high-efficient, can greatly improve the life of small thin and long shafts part Efficiency is produced, production cost is reduced.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is the structure chart that a kind of pulse current provided in an embodiment of the present invention assists microsecond delay mold;
Fig. 2 is the structural schematic diagram of detachable die plate insert provided in an embodiment of the present invention;
Fig. 3 is the structural schematic diagram of level-one mandril provided in an embodiment of the present invention;
Fig. 4 is the structural schematic diagram of second level mandril provided in an embodiment of the present invention;
Fig. 5 is the flow chart that a kind of pulse current provided in an embodiment of the present invention assists micro-forming method;
Fig. 6 is the three dimensional structure diagram of dental implant provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of pulse current auxiliary microsecond delay mold and methods, and heating time is short, temperature rise amount Greatly, forming efficiency is high, can greatly improve the production efficiency of small thin and long shafts part, reduces production cost.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
Fig. 1 is the structure chart that a kind of pulse current provided in an embodiment of the present invention assists microsecond delay mold.As shown in Figure 1, A kind of pulse current auxiliary microsecond delay mold, the mold include: upper die component, lower mold assemblies, formed punch 5, cavity plate and pulse electricity Source 15.
The upper die component includes punch fixing plate 4, and the formed punch 5 is inlaid on the punch fixing plate 4.
The lower mold assemblies include cavity plate fixed block 8, and the cavity plate is fixedly arranged on the cavity plate fixed block 8, and described recessed The type chamber of mould is located at the underface of the formed punch 5, and the type chamber is for accommodating forging stock 9 to be formed.
One end of the pulse power 15 is electrically connected with the punch fixing plate 4, the other end of the pulse power 15 with The cavity plate fixed block 8 is electrically connected.In the present embodiment, one end of the first conducting wire 14 passes through a terminal and punch fixing plate 4 connections, the other end of the first conducting wire 14 are connect with one end of the pulse power 15, and one end of the second conducting wire 16 is connect by a conducting wire Head is connect with cavity plate fixed block 8, and the other end of the second conducting wire 16 is connect with the other end of the pulse power 15.Pulse power electric current frequency Rate is 100-1000Hz, current density 10-500A/mm2
In order to guarantee there is enough safe distances between upper die component and lower mold assemblies, the mold further includes limited post 6, the limited post 6 is arranged between the punch fixing plate 5 and the cavity plate fixed block 8.In the present embodiment, the limited post 6 quantity is two, and two limited posts 6 are symmetricly set on the two sides of the formed punch 5.
The cavity plate includes fixed die plate insert 10 and detachable die plate insert 7, the anchor as a preferred method, The docking of the inner wall of the inner wall of mould insert 10 and the detachable die plate insert 7 forms the type chamber for accommodating forging stock 9 to be formed.This reality It applies in example, detachable die plate insert 7 and fixed die plate insert 10 pass through lock precision positioning.
In the present embodiment, the upper die component further includes cope plate 1, upper insulation plate 2 and upper padding plate 3, cope plate 1, it is upper absolutely Listrium 2, upper padding plate 3, punch fixing plate 4 and limited post 6 are from top to bottom sequentially overlapped setting, cope plate 1 by screw and it is upper absolutely Listrium 2 is detachably connected, and upper insulation plate 2 is connect by screw with impulsion fixed plate 4, and the upper end of formed punch 5 passes through punch fixing plate 4 It is inlaid in the middle part of 3 lower surface of upper padding plate afterwards.Fig. 2 is the structural schematic diagram of detachable die plate insert provided in an embodiment of the present invention.
Further, the lower mold assemblies further include: lower bolster 12, lower insulation plate 13, lower template 20, level-one mandril 11, Second level mandril 17, wedge block 18 and push rod 19.Cavity plate fixed block 8, the lower bolster 12, the lower insulation plate 13 and it is described under Template 20 is from top to bottom sequentially overlapped setting, and lower template 20 is detachably connected by screw with lower insulation plate 13, lower insulation plate 13 It is detachably connected by screw and cavity plate fixed block 8.For detachable die plate insert 7 by locating location, the detachable die plate insert 7 is logical It crosses bolt to be detachably connected on the cavity plate fixed block 8, the lower end of the fixed die plate insert 10 is inlaid in the lower bolster 12 upper surface, and it is fixed by cavity plate fixed block 8.Cavity plate fixed block 8 is removable by the upper surface of screw and lower insulation plate 13 Unload connection.
The region of type chamber described in 12 face of lower bolster offers lower bolster through-hole, and the lower bolster through-hole is for accommodating The level-one mandril 11.The lower insulation plate through-hole with the lower bolster through-hole face is offered on the lower insulation plate 13, it is described One end of second level mandril 17 is located in the lower insulation plate through-hole, and it is sliding that the other end of the second level mandril 17 is fixed on the wedge shape On block 18, the wedge block 18 is located in the cavity of the lower template 20, and the push rod 19 is oblique with the wedge block 18 Face is slidably connected, and adjusts the height of wedge block 18 by moving horizontally for push rod 19.Fig. 3 is provided in an embodiment of the present invention The structural schematic diagram of level-one mandril.Fig. 4 is the structural schematic diagram of second level mandril provided in an embodiment of the present invention.
In the present embodiment, push rod 19 is located in the cavity of lower template 20, and the water of push rod 19 is adjusted by the bolt on both sides Prosposition is set.Level-one mandril 11 and second level mandril 17 be it is discontiguous, after part forming by adjust push rod 19 position, push Sliding block 18 moves up, and then second level mandril 17 is made to push level-one mandril 11, and level-one mandril 11 ejects part.
As a preferred embodiment, the mold further include four guide sleeve (not shown) and four guide posts (in figure not Display), four guide sleeves are that symmetrical centre is symmetricly set on the cope plate 1 with the formed punch 5, each guide sleeve Upper end is fixedly connected with the lower surface of the cope plate 1, and the upper end of each guide post is inserted into the guide sleeve respectively Lower end in, the lower end of each guide post is fixedly connected with the upper surface of the lower template 20.
Fig. 5 is the flow chart that a kind of pulse current provided in an embodiment of the present invention assists micro-forming method.The method is used In the mold, as shown in Figure 5, which comprises
Step 201: the upper die component being connect with press device, forging stock to be formed is placed in the type chamber.
Step 202: starting the press device, the press device downlink drives formed punch to move downward, so that the punching There are precharge pressures between head and the upper surface of the forging stock to be formed.The precharge pressure is applied to the forging stock to be formed The pressure that upper surface generates is 3-5MPa.
Step 203: starting impulse power supply heats the forging stock to be formed, makes the temperature of the forging stock to be formed Maintain predetermined forming temperature.The predetermined forming temperature is greater than the recrystallization temperature of the forging stock to be formed, and lower than described The fusing point of forging stock to be formed.
Step 204: controlling the press device downlink and the formed punch is driven to continue to move downward, make the forging stock to be formed Full of the type chamber.
The pure titanium dental implant preparation of Ultra-fine Grained is more difficult, and the deformation difficulty of pure titanium is larger, and machining deformation springback capacity is big, needs It to shape at a higher temperature, but heating time is too long in electric furnace, ultra-fine grain can grow up, and influence the various aspects of implant Performance.The characteristics of titanium dental implant pure for Ultra-fine Grained, uses a kind of pulse current auxiliary microsecond delay mould provided by the invention Tool and method, can be such that heating time sharply shortens, to ensure that the properties of implant.Below with the pure titanium tooth of Ultra-fine Grained For the forming of section's implant, specific implementation process of the invention is introduced:
Step 1: mold is installed on press device, then detachable die plate insert 7 is mounted on cavity plate fixed block 10, Then the suitably pure titanium blank 9 of size is placed in concave die cavity.Pure titanium blank 9 selects the pure titanium forging stock of TA1, a diameter of 2mm, a length of 18mm.Start press machine manual mode, press device downlink drives formed punch 5 to move downward and connects with 9 upper surface of blank Touching, when press force sensor is that 10-20N makes to stop, to guarantee that formed punch 5 compresses blank 9.
Step 2: the pulse power 15 is connected on punch fixing plate 4 and cavity plate fixed block 8 by conducting wire, starting impulse Power supply 15 is arranged current parameters, heats to pure titanium forging stock 9, keep the temperature after reaching predetermined forming temperature.Pulse power electric current Frequency is 200Hz, current density 280-350A/mm2.Forming temperature is 880-950 DEG C, soaking time 0.5-2min, excellent The soaking time of choosing is 1min.
In practical application, usable infrared radiation thermometer measures the real time temperature of pure titanium forging stock.It can also be on the pulse power Different output electric currents is set, and after a certain period of time to blank heating, blank temperature can tend towards stability electric current, reach a fixed value. Different electric currents corresponds to different equilibrium temperatures, and suitable electric current is selected to heat, and can reach desired set temperature after stablizing.
Step 3: drafts and movement speed is arranged in starting press machine automatic control mode, and formed punch 5 applies forging stock 9 and makees Firmly, make blank 9 full of mold cavity.
Since the volume of type chamber is it is known that calculating the volume of blank, can calculate blank full of mold cavity makes base The volume under pressure of material.Part forming can also be simulated with software, obtain required maximum pressure, setting upper pressure limit is come in experiment Limit, when reaching corresponding pressure, that is, can determine that blank fills up type chamber.
Step 4: the pulse power 15 is closed after the completion of squeezing, after cooling, 5 backhaul of formed punch is separated with cavity plate, is unloaded detachable Die plate insert 7 is taken out the miniature parts of forming by level-one mandril 11 and second level mandril 17.
Fig. 6 is the three dimensional structure diagram of dental implant provided in an embodiment of the present invention.The head shape of dental implant Shape can adjust according to actual needs, it is only necessary to change the cavity shape of detachable die plate insert, the head shape of implant can be with Change.
When pulse current passes through moulding material, the parameter of the pulse power and the shape of moulding material can all influence shape material Temperature.In general, the column billet cross section product of identical material is bigger, height is shorter, the temperature of material is then under same electric current It is lower.Therefore, as pure titanium forging stock height reduces, cross-sectional area increases, blank temperature has apparent reduction, in order to maintain base Expect that forming temperature in fixed interval, needs to increase accordingly pulse current value after blank temperature is lower than preset value.
The miniature axial workpiece of high length-diameter ratio such as micro-type dental implant, pulse current auxiliary microsecond delay mold do not need dedicated Press device can both use on baby press, can also use in Material Testing Machine, have good applicability, The dependence to mold assembly and equipment precision is greatly reduced, small thin and long shafts part high quality, low cost, batch are realized Manufacture.
The auxiliary manufacturing process of pulse current is used for high length-diameter ratio axial workpiece die-forging forming by the present invention, auxiliary using pulse current Technology is helped to be substantially reduced pure titanium material resistance of deformation, plasticity significantly improves, or even has superplastic ability, material heating speed pole Fastly, heating speed has shortened within several seconds to a few minutes from several minutes of even a few hours of common electric furnace, substantially increases Production efficiency reduces production cost, can shape the small longaxones parts that filling quality is good, dimensional accuracy is high.
Meanwhile mold uses dismountable die plate insert, carries out precision positioning to mold by latching, by exhausted up and down Listrium guarantees safe insulation during electric current is passed through blank, and detachable Die Design reduces mold difficulty of processing, convenient for dress With replacement, the service life of mold is extended, guarantees the forming accuracy of implant by concave die cavity cooperation, greatly reduces Dependence to mold assembly and equipment precision.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said It is bright to be merely used to help understand method and its core concept of the invention;At the same time, for those skilled in the art, foundation Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not It is interpreted as limitation of the present invention.

Claims (8)

1. a kind of pulse current assists microsecond delay mold, which is characterized in that the mold includes: upper die component, lower mold assemblies, punching Head, cavity plate and the pulse power;Wherein,
The upper die component includes punch fixing plate, and the formed punch is inlaid on the punch fixing plate;
The lower mold assemblies include cavity plate fixed block, and the cavity plate is fixedly arranged on the cavity plate fixed block, and the type of the cavity plate Chamber is located at the underface of the formed punch, and the type chamber is for accommodating forging stock to be formed;
One end of the pulse power is electrically connected with the punch fixing plate, and the other end of the pulse power and the cavity plate are solid Determine block electrical connection.
2. mold according to claim 1, which is characterized in that the mold further includes limited post, the limited post setting Between the punch fixing plate and the cavity plate fixed block.
3. mold according to claim 1, which is characterized in that the cavity plate includes fixed die plate insert and detachable female die embedding The inner wall docking of block, the inner wall of the fixed die plate insert and the detachable die plate insert forms the type chamber.
4. mold according to claim 3, which is characterized in that the lower mold assemblies further include: lower bolster, lower insulation plate, Lower template, level-one mandril, second level mandril, wedge block and push rod;Wherein,
The cavity plate fixed block, the lower bolster, the lower insulation plate and the lower template are from top to bottom sequentially overlapped setting, institute Detachable die plate insert is stated to be detachably connected on the cavity plate fixed block, the lower end of the fixed die plate insert be inlaid in it is described under The upper surface of backing plate;
The region of type chamber described in the lower bolster face offers lower bolster through-hole, and the lower bolster through-hole is for accommodating described one Grade mandril;
The lower insulation plate through-hole with the lower bolster through-hole face, one end of the second level mandril are offered on the lower insulation plate In the lower insulation plate through-hole, the other end of the second level mandril is fixed on the wedge block, the wedge block In the cavity of the lower template, the inclined-plane of the push rod and the wedge block is slidably connected.
5. mold according to claim 1, which is characterized in that the mold further includes four guide sleeves and four guide posts, and four A guide sleeve is symmetricly set on the cope plate by symmetrical centre of the formed punch, and the upper end of each guide sleeve is and institute The lower surface for stating cope plate is fixedly connected, and the upper end of each guide post is inserted into respectively in the lower end of a guide sleeve, often The lower end of a guide post is fixedly connected with the upper surface of the lower template.
6. a kind of pulse current assists micro-forming method, the method is used for the described in any item molds of claim 1-5, described Method includes:
The upper die component is connect with press device, forging stock to be formed is placed in the type chamber;
Start the press device, the press device downlink drives formed punch to move downward so that the formed punch and it is described at There are precharge pressures between the upper surface of die forging base;
Starting impulse power supply heats the forging stock to be formed, maintains the temperature of the forging stock to be formed and makes a reservation for into Shape temperature;
Controlling the press device downlink drives the formed punch to continue to move downward, and makes the forging stock to be formed full of the type Chamber.
7. according to the method described in claim 6, it is characterized in that, the precharge pressure is applied to the upper of the forging stock to be formed The pressure that end face generates is 3-5MPa.
8. according to the method described in claim 6, it is characterized in that, the predetermined forming temperature is greater than the forging stock to be formed Recrystallization temperature, and it is lower than the fusing point of the forging stock to be formed.
CN201910434323.4A 2019-05-23 2019-05-23 A kind of pulse current auxiliary microsecond delay mold and method Pending CN110014112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910434323.4A CN110014112A (en) 2019-05-23 2019-05-23 A kind of pulse current auxiliary microsecond delay mold and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910434323.4A CN110014112A (en) 2019-05-23 2019-05-23 A kind of pulse current auxiliary microsecond delay mold and method

Publications (1)

Publication Number Publication Date
CN110014112A true CN110014112A (en) 2019-07-16

Family

ID=67194311

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910434323.4A Pending CN110014112A (en) 2019-05-23 2019-05-23 A kind of pulse current auxiliary microsecond delay mold and method

Country Status (1)

Country Link
CN (1) CN110014112A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111375721A (en) * 2020-03-23 2020-07-07 哈尔滨工业大学(威海) Device and method for preparing ultrafine crystals of material difficult to deform
CN115026237A (en) * 2022-07-21 2022-09-09 河北工程大学 Cold heading die and cold heading process

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1911862A (en) * 2006-09-01 2007-02-14 哈尔滨医科大学 Shaping method of nanometer bioceramic artificial joint
CN101508004A (en) * 2009-03-20 2009-08-19 华中科技大学 Sedan gear-box axle piece cold finish-forging formation method and die
CN101607274A (en) * 2009-07-13 2009-12-23 浙江工业大学 Manufacturing process and particular manufacturing craft thereof based on the asymmetric universal-joint fork of automobile of cold-extrusion technology
CN201446146U (en) * 2009-07-17 2010-05-05 无锡国盛精密模具有限公司 Forming die of fin used for heat exchanger
CN204486609U (en) * 2015-03-27 2015-07-22 上海瀚氏模具成型有限公司 The liftout attachment of mould
CN104815861A (en) * 2015-05-04 2015-08-05 周方义 Method for forming precise blank of tapered bearing roller, die corresponding to same and manufacturing process of die
CN107116134A (en) * 2017-05-12 2017-09-01 安徽江淮汽车集团股份有限公司 A kind of punching die for being easy to a few font workpiece materials returned
CN108994102A (en) * 2018-07-24 2018-12-14 哈尔滨工业大学 A kind of hollow shunting microsecond delay mold of pulse current auxiliary blank and method
CN108994101A (en) * 2018-07-24 2018-12-14 哈尔滨工业大学 Titanium alloy micro-cell electron capture detector pulse current assists hollow shunting microsecond delay mold and method
CN109047610A (en) * 2018-07-24 2018-12-21 哈尔滨工业大学 A kind of Ti alloy miniature gear pulse current auxiliary microsecond delay floating die assembly

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1911862A (en) * 2006-09-01 2007-02-14 哈尔滨医科大学 Shaping method of nanometer bioceramic artificial joint
CN101508004A (en) * 2009-03-20 2009-08-19 华中科技大学 Sedan gear-box axle piece cold finish-forging formation method and die
CN101607274A (en) * 2009-07-13 2009-12-23 浙江工业大学 Manufacturing process and particular manufacturing craft thereof based on the asymmetric universal-joint fork of automobile of cold-extrusion technology
CN201446146U (en) * 2009-07-17 2010-05-05 无锡国盛精密模具有限公司 Forming die of fin used for heat exchanger
CN204486609U (en) * 2015-03-27 2015-07-22 上海瀚氏模具成型有限公司 The liftout attachment of mould
CN104815861A (en) * 2015-05-04 2015-08-05 周方义 Method for forming precise blank of tapered bearing roller, die corresponding to same and manufacturing process of die
CN107116134A (en) * 2017-05-12 2017-09-01 安徽江淮汽车集团股份有限公司 A kind of punching die for being easy to a few font workpiece materials returned
CN108994102A (en) * 2018-07-24 2018-12-14 哈尔滨工业大学 A kind of hollow shunting microsecond delay mold of pulse current auxiliary blank and method
CN108994101A (en) * 2018-07-24 2018-12-14 哈尔滨工业大学 Titanium alloy micro-cell electron capture detector pulse current assists hollow shunting microsecond delay mold and method
CN109047610A (en) * 2018-07-24 2018-12-21 哈尔滨工业大学 A kind of Ti alloy miniature gear pulse current auxiliary microsecond delay floating die assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111375721A (en) * 2020-03-23 2020-07-07 哈尔滨工业大学(威海) Device and method for preparing ultrafine crystals of material difficult to deform
CN115026237A (en) * 2022-07-21 2022-09-09 河北工程大学 Cold heading die and cold heading process
CN115026237B (en) * 2022-07-21 2023-12-19 河北工程大学 Cold heading die and cold heading process

Similar Documents

Publication Publication Date Title
CN104889186B (en) A kind of positive and negative Compound Extrusion manufacturing process of ZrTiAlV alloys electric field-assisted
JP4379621B2 (en) Aluminum alloy forming method
CN101406925B (en) Method for device for forming metal micro-thixotropy in semi-solid state assistant by supersonic vibration
CN110014112A (en) A kind of pulse current auxiliary microsecond delay mold and method
CN108405713B (en) A kind of sheet metal pulse current assists micro- hole punched device and method
JP5936648B2 (en) Press forming method and press forming apparatus of semi-solid metal material
CN107186139B (en) The H profile steel manufacturing method of nuclear fusion stack magnet support
CN104070129B (en) Hot extrusion forging die for pipe with flange and deep blind taper hole shaft and forging technology thereof
CN101284298B (en) Preparation method of aluminium alloy semi-solid state blank for large size forging
CN104707931A (en) Manufacturing method for large high-temperature alloy disk-type die forging parts
CN104624769B (en) A kind of interior pressing formation and heat treatment integrated apparatus and method
CN104889300A (en) Closed die forging die for valve seat of diesel engine and processing technique of die
CN108994101A (en) Titanium alloy micro-cell electron capture detector pulse current assists hollow shunting microsecond delay mold and method
CN108994102B (en) A kind of hollow shunting microsecond delay mold of pulse current auxiliary blank and method
CN109047610A (en) A kind of Ti alloy miniature gear pulse current auxiliary microsecond delay floating die assembly
CN101077507B (en) Micro-device warm extrusion molding method and device based on laser heating
CN104723031B (en) Radial-forging type strain induction semi-solid state extrusion technology for waveguide tube
CN201295751Y (en) Ultrasonic vibration auxiliary semisolid metal micro thixotropic molding device
CN114192719A (en) High-temperature alloy extrusion-forging forming die, method and application thereof
CN102179464A (en) Process for forming generator claw pole of vehicle
US2755689A (en) Method of hobbing steels
JP5507958B2 (en) Method for forming powder molded body of micro component
CN114192712B (en) Die forging forming die and die forging forming method for large L-shaped hollow thin-wall pipeline
CN113369327B (en) Open cavity circular extrusion process
JPH11285774A (en) Die for forging product having different height projections and forging method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20190716