CN101462227A - Hot forging composite die making method and hot forging composite mold - Google Patents
Hot forging composite die making method and hot forging composite mold Download PDFInfo
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- CN101462227A CN101462227A CNA2008101623540A CN200810162354A CN101462227A CN 101462227 A CN101462227 A CN 101462227A CN A2008101623540 A CNA2008101623540 A CN A2008101623540A CN 200810162354 A CN200810162354 A CN 200810162354A CN 101462227 A CN101462227 A CN 101462227A
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Abstract
The invention provides a method for manufacturing a hot forging composite die and the hot forging composite die, which belongs to the technical field of machinery and solves the technical problems that the composite die is easy to rupture, and has low bearing capacity, comparatively complex structure, high manufacturing cost, long development cycle and the like. The method for manufacturing the hot forging composite die comprises the steps of selecting materials, preparing a die body, processing the die body, processing a die cavity and assembling. The hot forging composite die comprises an inner die body and an outer die body, wherein the inner die body is blocky and is provided with a concave die cavity, the outer die body is provided with a concave inner die mounting base, and the outline of the inner die body is matched with the shape of the inner die mounting base; and when the inner die body is mounted in the inner die mounting base, the die cavity faces to the outside of the inner die mounting base. The manufacturing method has the advantages of simple process and short development cycle, and the die has the characteristics of iron fist in the velvet glove, strong bearing capacity, long service life, simple structure, large quantity of forge piece materials conservation, and high forge piece quality.
Description
Technical field
The present invention relates to field of mechanical technique, especially relate to a kind of hot forging composite die making method and hot forging composite die.
Background technology
Hot-forging die is the mould that is used for hot metal die-forging forming.During die forging, the blank metal just can be made forging by distortion, and this just needs mould that the blank metal is applied great power effect could reach predetermined effect.Owing to the blank metal can give the mould reaction force when stressed effect is out of shape, can cause mould that a certain amount of deformation is also arranged usually.Because operation continuously can cause mould generation deformation, the quality of product also is difficult to be guaranteed.In addition, existing mould is monoblockization normally, the exploitation of mould designs as required and makes, mould does not have standardization, each mould of making all needs through blanking-roughing-loaded down with trivial details, complicated manufacturing procedures such as heat treatment-fine finishining, the construction cycle of mould is long, the cost height.Because the defective that exists on the mould structure is big by the allowance of Mould Machining gained forging, need expend the forging material of adding, and the dimensional accuracy of forging and surface quality are not high yet.
In order to overcome above-mentioned defective, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of hot forging composite die [application number: CN200520008072.7], and it comprises external mold and internal mold, wherein, external mold is made up of plane external mold and curved surface external mold, external mold is a die, and internal mold is a soft mode, and internal mold is attached on the inwall of the plane external mold of external mold and curved surface external mold, between internal mold and external mold, be provided with rope, one end and the internal mold of rope are fixed together, and the other end and the external mold of rope are fixed together, and are provided with support at the outer wall of external mold.
Such scheme has improved the structural strength of mould to a certain extent, has prolonged service life.But because its external mold is a die, internal mold is a soft mode, when work, in case impulsive force is bigger, causes broken mold easily when internal mold takes place than large deformation, and its bearing capacity is low still not high.In addition, the structure more complicated of this mould, the manufacturing cost height, the construction cycle of mould is long.
Summary of the invention
The objective of the invention is at the problems referred to above, provide a kind of easy to implement, mold developing cycle is short, and development cost is cheap, and the mould bearing capacity is strong, the hot forging composite die making method of long service life.
Another object of the present invention is at the problems referred to above, provides a kind of simple in structure, and the allowance of processing gained forging is little, can save a large amount of forging materials, the hot forging composite die that forging quality is high.
For achieving the above object, the present invention has adopted following technical proposal: the manufacture method of this hot forging composite die is characterized in that this manufacture method comprises the steps:
A, select materials and prepare die body: choose the interior mold materials and the outer mold materials that are used to make internal mold, external mold respectively, die body and outer die body in making respectively of selected interior mold materials and outer mold materials then, and it is block that interior die body is, and has the internal mold mount pad of depression on the outer die body;
B, die body are handled: internally die body and outer die body are heat-treated and surface treatment respectively, and the profile of interior die body and the shape of internal mold mount pad are complementary;
C, die sinking and assembling: according to pre-designed die cavity shape, on interior die body, process the die cavity of depression, mould intracavity wall is carried out surface treatment, then interior die body is packed into the internal mold mount pad of outer die body, and the die cavity that makes interior die body promptly makes hot forging composite die towards the outside of internal mold mount pad.
Die body among the present invention is batch making in advance, forms standardized interior die body and outer die body, and the internal mold body can be packed in the outer die body easily.When the needs mold developing, only need on interior die body, to process the die cavity that needs and get final product.By this mode with the die body commercialization, can make the production process of mould simple, shorten the construction cycle of mould effectively, reduce the mould development cost.The die cavity shape here can design as required.
In the manufacture method of above-mentioned hot forging composite die, in above-mentioned steps A, the hardness of described selected interior mold materials is greater than the hardness of outer mold materials.
Since the material hardness height of interior die body, the material good toughness of outer die body, and entire die has soft outside but hard inside characteristic, has made full use of the mechanical performance of two kinds of materials.When interior die body generation deformation, the external mold body can in time absorb deformation, and die body in whole is played a protective role, and makes the bearing capacity of mould higher, long service life.
In the manufacture method of above-mentioned hot forging composite die, the material of described interior die body is any one in F28, the HT mould steel; The material of described outer die body is a V2 mould steel.F28 mould steel is applicable to the hot-forging die below 400 tons; HT is applicable to middle-size and small-size high speed hot extrude forging die, precision forging die.
In the manufacture method of above-mentioned hot forging composite die, in above-mentioned steps A, the bottom of die body processes the steam vent that connects with the internal mold mount pad outside; In above-mentioned step B, the outer wall of interior die body cooperates with the inner wall sealing of internal mold mount pad in the outer die body.
Interior die body and outer die body are sealed and matched owing to be provided with steam vent, when interior die body with outside die body when cooperating, can be easy to assembling between the two easily with the air discharge.
In the manufacture method of above-mentioned hot forging composite die, in above-mentioned steps A, described interior die body is processed into any one in cylinder, elliptic cylindrical or the polygon cylinder.Die body is easy to processing in cylindrical, and elliptic cylindrical or polygon cylinder can effectively prevent to rotate in the course of the work.In addition, this structure can be processed microscler forging, enlarges the scope of application of mould.
The hot forging composite die that manufacture method by above-mentioned hot forging composite die makes, die body and outer die body in comprising, it is characterized in that, die body is block in described, on interior die body, have the die cavity of depression, have the internal mold mount pad of depression on the described outer die body, the shape of the profile of above-mentioned interior die body and internal mold mount pad is complementary, and when interior die body is packed the internal mold mount pad into die cavity towards the outside of internal mold mount pad.
In above-mentioned hot forging composite die, the hardness of described interior die body is greater than the hardness of outer die body.
In above-mentioned hot forging composite die, the material of described interior die body is any one in F28, the HT mould steel; The material of described outer die body is a V2 mould steel.
In above-mentioned hot forging composite die, the bottom of described outer die body has the steam vent that connects with the internal mold mount pad; The outer wall of die body cooperates with the inner wall sealing of internal mold mount pad in the outer die body in described.
In above-mentioned hot forging composite die, described interior die body is an integral structure, and described outer die body is an integral structure; Die body is any one in cylinder, elliptic cylindrical or the polygon cylinder in described.
Compared with prior art, the advantage of this hot forging composite die making method is: die body is batch making in advance, form standardized interior die body and outer die body, when the needs mold developing, only needing to process the die cavity that needs on interior die body gets final product, the production process of entire die is simple, shortens the construction cycle of mould effectively, reduces the mould development cost.The advantage of this hot forging composite die is: because the material hardness height of interior die body, the material good toughness of outer die body, entire die has soft outside but hard inside characteristic, made full use of the mechanical performance of two kinds of materials, the mould bearing capacity is strong, long service life, and simple in structure, can save a large amount of forging materials, the forging quality height.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 provided by the invention.
Fig. 2 is the plan structure schematic diagram of embodiment 1 provided by the invention.
Fig. 3 be embodiment 1 provided by the invention partly cut open figure.
Fig. 4 is the structural representation of embodiment 2 provided by the invention.
Fig. 5 is the plan structure schematic diagram of embodiment 2 provided by the invention.
Fig. 6 be embodiment 2 provided by the invention partly cut open figure.
Among the figure, interior die body 1, die cavity 11, outer die body 2, internal mold mount pad 21, steam vent 22.
The specific embodiment
Embodiment 1:
As Fig. 1, Fig. 2 and shown in Figure 3, die body 1 and outer die body 2 in this hot forging composite die comprises.It is block that interior die body 1 is, and interior die body 1 is the cylinder of integral type.On interior die body 1, have the die cavity 11 of depression.Die cavity 11 shapes here can design as required.Outer die body 2 is an integral structure, has the internal mold mount pad 21 of depression outside on the die body 2, and the profile of above-mentioned interior die body 1 and the shape of internal mold mount pad 21 are complementary, and when interior die body 1 is packed internal mold mount pad 21 into die cavity 11 towards the outside of internal mold mount pad 21.
The bottom of outer die body 2 has the steam vent 22 that connects with internal mold mount pad 21.The outer wall of interior die body 1 cooperates with the inner wall sealing of internal mold mount pad 21 in the outer die body 2.Can easily the air in the internal mold mount pad 21 be discharged by this structure.
In the present embodiment, the hardness of interior die body 1 is greater than the hardness of outer die body 2.Wherein, the material of interior die body 1 is any one in F28, the HT mould steel, and the material of outer die body 2 is a V2 mould steel.Above-mentioned F28, HT, V2 mould steel are the model of the steel of making mould, and wherein V2, F28, HT mould steel composition are respectively shown in table 1, table 2, table 3:
The chemical analysis (weight percentage) of table 1:V2 steel
The chemical analysis (weight percentage) of table 2:F28 steel
The chemical analysis (weight percentage) of table 3:HT steel
The manufacture method of hot forging composite die comprises the steps:
A, select materials and prepare die body: choose the interior mold materials and the outer mold materials that are used to make internal mold, external mold respectively, die body 1 and outer die body 2 in making respectively of selected interior mold materials and outer mold materials then, and it is block that interior die body 1 is, and has the internal mold mount pad 21 of depression on the outer die body 2.The hardness of selected interior mold materials is greater than the hardness of outer mold materials.The material of the interior die body 1 here is any one in F28, the HT mould steel; The material of outer die body 2 is a V2 mould steel.Wherein, interior die body 1 is processed into cylinder.The bottom of die body 2 processes the steam vent 22 that connects with internal mold mount pad 21 outside.
B, die body are handled: internally die body 1 and outer die body 2 are heat-treated and surface treatment respectively, and the profile of interior die body 1 and the shape of internal mold mount pad 21 are complementary.By surface treatment the outer wall of interior die body 1 is cooperated with the inner wall sealing of internal mold mount pad 21 in the outer die body 2.
C, die sinking and assembling: according to pre-designed die cavity shape, on interior die body 1, process the die cavity 11 of depression, die cavity 11 inwalls are carried out surface treatment, then interior die body 1 is packed into the internal mold mount pad 21 of outer die body, and the die cavity 11 that makes interior die body 1 promptly makes hot forging composite die towards the outside of internal mold mount pad 21.
Because, die body of the present invention is batch making in advance, form standardized interior die body 1 and outer die body 2, when the needs mold developing, only need to process the die cavity 11 that needs on interior die body 1 and get final product, the production process of entire die is simple, shortens the construction cycle of mould effectively, reduce mould development cost 20～30%, improve and make efficient.Because this hot forging composite die has soft outside but hard inside characteristic, can effectively prolong its service life.Because interior die body 1 processing is very convenient, can effectively improve the dimensional accuracy and the surface quality of forging, and compare with existing mould, the allowance of forging is reduced in a large number, save the forging material, reduce production costs.
Embodiment 2:
As Fig. 4, Fig. 5 and shown in Figure 6, in the present embodiment, interior die body 1 be shaped as elliptic cylindrical, the shape of the profile of interior die body 1 and internal mold mount pad 21 is complementary.All the other are all identical with embodiment 1, and this paper does not do and gives unnecessary details.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as interior die body 1, die cavity 11, outer die body 2, internal mold mount pad 21, steam vent 22 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (10)
1. the manufacture method of a hot forging composite die is characterized in that, this manufacture method comprises the steps:
A, select materials and prepare die body: choose the interior mold materials and the outer mold materials that are used to make internal mold, external mold respectively, make interior die body (1) and outer die body (2) respectively with selected interior mold materials and outer mold materials then, and it is block that interior die body (1) is, and has the internal mold mount pad (21) of depression on the outer die body (2);
B, die body are handled: internal die body (1) and outer die body (2) are heat-treated and surface treatment respectively, and the profile of interior die body (1) and the shape of internal mold mount pad (21) are complementary;
C, die sinking and assembling: according to pre-designed die cavity shape, on interior die body (1), process the die cavity (11) of depression, die cavity (11) inwall is carried out surface treatment, then interior die body (1) is packed into the internal mold mount pad (21) of outer die body, and the die cavity (11) that makes interior die body (1) promptly makes hot forging composite die towards the outside of internal mold mount pad (21).
2. the manufacture method of hot forging composite die according to claim 1 is characterized in that, in above-mentioned steps A, the hardness of described selected interior mold materials is greater than the hardness of outer mold materials.
3. the manufacture method of hot forging composite die according to claim 2 is characterized in that, the material of described interior die body (1) is any one in F28, the HT mould steel; The material of described outer die body (2) is a V2 mould steel.
4. according to the manufacture method of claim 1 or 2 or 3 described hot forging composite dies, it is characterized in that in above-mentioned steps A, the bottom of die body (2) processes the steam vent (22) that connects with internal mold mount pad (21) outside; In above-mentioned step B, the outer wall of interior die body (1) cooperates with the inner wall sealing of internal mold mount pad (21) in the outer die body (2).
5. according to the manufacture method of claim 1 or 2 or 3 described hot forging composite dies, it is characterized in that in above-mentioned steps A, described interior die body (1) is processed into any one in cylinder, elliptic cylindrical or the polygon cylinder.
6. hot forging composite die, comprise interior die body (1) and outer die body (2), it is characterized in that, die body (1) is block in described, on interior die body (1), have the die cavity (11) of depression, have the internal mold mount pad (21) of depression on the described outer die body (2), the profile of above-mentioned interior die body (1) and the shape of internal mold mount pad (21) are complementary, and when interior die body (1) is packed internal mold mount pad (21) into die cavity (11) towards the outside of internal mold mount pad (21).
7. hot forging composite die according to claim 6 is characterized in that, the hardness of described interior die body (1) is greater than the hardness of outer die body (2).
8. hot forging composite die according to claim 7 is characterized in that, the material of described interior die body (1) is any one in F28, the HT mould steel; The material of described outer die body (2) is a V2 mould steel.
9. according to claim 6 or 7 or 8 described hot forging composite dies, it is characterized in that the bottom of described outer die body (2) has the steam vent (22) that connects with internal mold mount pad (21); The outer wall of die body (1) cooperates with the inner wall sealing of internal mold mount pad (21) in the outer die body (2) in described.
10. according to claim 6 or 7 or 8 described hot forging composite dies, it is characterized in that described interior die body (1) is an integral structure, described outer die body (2) is an integral structure; Die body (1) is any one in cylinder, elliptic cylindrical or the polygon cylinder in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101623540A CN101462227B (en) | 2008-11-24 | 2008-11-24 | Hot forging composite die making method and hot forging composite mold |
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| CN2008101623540A CN101462227B (en) | 2008-11-24 | 2008-11-24 | Hot forging composite die making method and hot forging composite mold |
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| CN101462227A true CN101462227A (en) | 2009-06-24 |
| CN101462227B CN101462227B (en) | 2012-02-15 |
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| CN2008101623540A Expired - Fee Related CN101462227B (en) | 2008-11-24 | 2008-11-24 | Hot forging composite die making method and hot forging composite mold |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528407A (en) * | 2011-12-23 | 2012-07-04 | 江苏森威精锻有限公司 | Method for processing integral concave mould of universal joint |
| CN103481043A (en) * | 2013-10-11 | 2014-01-01 | 玉环金科机电有限公司 | Technology for manufacturing prestress compound die |
| CN104070128A (en) * | 2013-03-28 | 2014-10-01 | 日立金属株式会社 | Die used for hot forging and hot forging method |
| CN110369975A (en) * | 2019-08-28 | 2019-10-25 | 云南濮耐昆钢高温材料有限公司 | A kind of production method of mouth of a river die sleeve |
| CN114192722A (en) * | 2021-12-31 | 2022-03-18 | 武汉理工大学 | Titanium-aluminum alloy hot forging forming method and die |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2285704Y (en) * | 1996-04-10 | 1998-07-08 | 凤城市通达汽车配件厂 | Hot forging die for flange of half rear axle for automobile |
| CN2547436Y (en) * | 2002-05-27 | 2003-04-30 | 郑通分 | Integrated die sleeve |
| CN1548255A (en) * | 2003-05-18 | 2004-11-24 | 聂梁煊 | Making process and mold of water pump adaptor with circular upper part and squared bottom part |
| CN2782250Y (en) * | 2004-11-16 | 2006-05-24 | 北京百慕航材高科技股份有限公司 | Compound moulding die structure by extruding and forging |
| CN2776657Y (en) * | 2005-03-14 | 2006-05-03 | 胡宁 | Composite mould |
| CN100358652C (en) * | 2005-12-06 | 2008-01-02 | 武汉理工大学 | Hot-forging die and its preparing method |
| CN201295729Y (en) * | 2008-11-24 | 2009-08-26 | 李丕谦 | Hot forging composite die |
-
2008
- 2008-11-24 CN CN2008101623540A patent/CN101462227B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528407A (en) * | 2011-12-23 | 2012-07-04 | 江苏森威精锻有限公司 | Method for processing integral concave mould of universal joint |
| CN102528407B (en) * | 2011-12-23 | 2014-08-27 | 江苏森威精锻有限公司 | Method for processing integral concave mould of universal joint |
| CN104070128A (en) * | 2013-03-28 | 2014-10-01 | 日立金属株式会社 | Die used for hot forging and hot forging method |
| CN103481043A (en) * | 2013-10-11 | 2014-01-01 | 玉环金科机电有限公司 | Technology for manufacturing prestress compound die |
| CN110369975A (en) * | 2019-08-28 | 2019-10-25 | 云南濮耐昆钢高温材料有限公司 | A kind of production method of mouth of a river die sleeve |
| CN114192722A (en) * | 2021-12-31 | 2022-03-18 | 武汉理工大学 | Titanium-aluminum alloy hot forging forming method and die |
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| CN101462227B (en) | 2012-02-15 |
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