CN102397968A - Dissimilar metal composite piston, forging process thereof and forging die - Google Patents
Dissimilar metal composite piston, forging process thereof and forging die Download PDFInfo
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- CN102397968A CN102397968A CN2011103620337A CN201110362033A CN102397968A CN 102397968 A CN102397968 A CN 102397968A CN 2011103620337 A CN2011103620337 A CN 2011103620337A CN 201110362033 A CN201110362033 A CN 201110362033A CN 102397968 A CN102397968 A CN 102397968A
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- die
- piston
- dress
- forging
- dissimilar metal
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- 238000005242 forging Methods 0.000 title claims abstract description 34
- 239000002905 metal composite material Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 16
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000003252 repetitive effect Effects 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000010734 process oil Substances 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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Abstract
The invention discloses a dissimilar metal composite piston forging process, which relates to the technical field of solid hot die forging and welding, wherein dissimilar metals are blanked according to the required length and weight respectively; the method comprises the following steps of (1) reserving allowance for a piston rod by using metal materials, processing the piston rod into a piston rod shape, and placing the processed piston rod material in a concave die on a working table of a press machine; horizontally placing the heated piston head on a piston rod material in the female die by using a metal material, and operating a press machine to enable the male die to extrude dissimilar metal in the female die to be formed; the press ejects the forged composite piston out, and the forged composite piston is taken out of the female die for air cooling to complete the forging process; the metal of different materials is applied according to the use requirements of different parts of the piston, and the use performance and the reliability of the forged composite piston meet the operation requirements of the high-voltage switch electrical components. Also discloses a die for extrusion forging when the dissimilar metal composite piston forging process is implemented.
Description
Technical field
The present invention relates to solid state heat die forging connection technology field, be specifically related to a kind of dissimilar metal through the composite piston forging dress technology and process and forge to adorn and use mould.
Background technology
Existing high-voltage electrical apparatus piston is all processed by copper alloy, and the anti-push-and-pull intensity of the internal thread of its rod member afterbody is weak; And the material price of copper alloy exceeds 7-8 doubly than the material price of steel at present, and the twice that the tensile strength of steel is higher than copper alloy again is many.In view of above factor,, can change piston rod portion into steel for improving whole rod member of piston and tailing screw flight tension compression strength and reducing the product cost.
Summary of the invention
Technical problem to be solved by this invention provides a kind of dissimilar metal composite piston and forging dress technology thereof and forges dress and use mould; Use the metal of unlike material according to the instructions for use of piston different parts; Be integral through forging dress technology, and back composite piston serviceability is adorned in forging and reliability all satisfies high-voltage switch gear electric component service requirement.
For realizing the foregoing invention purpose, following technical scheme is adopted in the invention:
A kind of dissimilar metal composite piston is forged dress technology, specifically comprises the steps:
A), with the step of dissimilar metal by Len req separately and weight blanking;
B), piston rod is used the metal charge made allowance, be processed into the piston rod profile, and the piston rod material after will processing places the step in the die on the press bench;
C), the piston head after will heating keeps flat on the die inner piston rod material with metal charge, the operating pressure machine makes the step of dissimilar metal moulding in the punch Extruding die;
D), forcing press ejects the composite piston that forging installs the composite piston that forging is installed takes out air cooling from die step;
E), repetitive operation c then)-d) step, produce continuously.
Be better implement the invention, forge the step that also is included in the punch-die debugging installation that to forge the dress piston on the forcing press before adorning.
Be better implement the invention, be heated to 650-900 ℃ with metal charge forging the preceding piston head of dress.
Be better implement the invention, also comprise when initial workpiece is forged dress the step of mould and die preheating to 260-350 ℃.
Be better implement the invention, in the said forging dress technical process, punch is not lubricated, and die sprays rare graphite water.
Be better implement the invention, also comprise carrying out follow-up machined, the step of final shaping unit through the dress of the forging behind air cooling piston.
Be better implement the invention, said piston head uses metal charge to be copper alloy or aluminium alloy, and said piston rod uses metal charge to be steel.
Another purpose of the invention provides the piston piece that goes out according to above-mentioned explained hereafter.
Implement the dissimilar metal composite piston and forge when adorning technology, extruding is forged and is adorned used mould, comprises punch and die, and die is arranged on the die holder; Punch connects through punch and is connected with the forcing press upper table, and the convex mould diameter size is corresponding to the big end size of piston head; Die comprises die plate insert and die outer ring, and die outer ring circle is located at the die plate insert periphery; Be provided with in the die plate insert and the corresponding shoulder hole of piston head shape; The die holder upper end is provided with boss, and boss puts in the die hole, and the boss outside dimension is corresponding to piston head small end size; Be provided with centre bore in the die holder, in order to hold piston rod and push rod.
Further, when die holder is arranged on the press bench, between workbench and die holder, backing plate is set; The backing plate center drilling, push rod passes from the hole.
Owing to adopted technique scheme, the present invention to have following beneficial effect:
1, forcing press of the present invention can utilize existing hydraulic press, and the heating piston crown is selected box electric furnace for use during with metal charge, and the machine in the technical process adds also and can utilize existing equipment; On the basis that does not increase the extras input, all can guarantee piston fine finishining required precision.
2, hydraulic press can be realized in seconds just can dissimilar metal being forged dressing up composite piston, high efficiency, low production cost.
3, adopt the composite piston surplus of forging dress technology little, machinability is good; Forge the intensity of dress back piston bulk strength above former piston rod member position; Through its service life of installation and reliability have all reached the requirement of high-voltage electrical apparatus components and parts for a long time.
4, the present invention has solved the high-intensity method of attachment of dissimilar metal under non-welding situation, makes each most chief of two kinds of metals.From then on also practice thrift a large amount of copper alloys, reduced product cost.
5, extruding is forged and to be adorned used mould and can reuse, and has practiced thrift the equipment input cost.
6, in the machining process, the smear metal of copper alloy and steel can be accomplished not pollute each other, walks steel cuttings with magnetic and can make remaining copper alloy bits very pure, can reclaim smoothly separately.
Description of drawings
Fig. 1 is the structural representation after the roughing of blocking dress steel part piston rod.
Fig. 2 is into the structural representation of swaged forging dress piston in punch-die.
Among the figure: 1, die plate insert; 2, die outer ring; 3, die holder; 4, push rod; 5, backing plate; 6, piston rod; 7, piston head; 8, punch; 9, punch connects.
The specific embodiment
The present invention is explained further that what need explanation is that following examples are not interpreted as the restriction to the invention below in conjunction with preferred embodiment.
Embodiment one
The forging dress technology of copper alloy and steel composite piston specifically may further comprise the steps:
A, get the raw materials ready: the band sawing machine blanking becomes required separately length and weight with copper alloy with hacksaw;
B, machined: will saw the good rod iron material Surface Machining of carrying out as shown in Figure 1, specifically be that the steel material that saw is good is seen light with an end face car earlier, and car becomes a technology groove again, and the planar end surface of touching the pillow is decided length overall and car becomes cylindrical, and maintains the cleaning of groove one end;
C, forging true up and are equipped with; Copper alloy material and the good steel part quantity of machined that saw is good are mated one to one, the copper alloy material are put into batch-type furnace put neatly 760 ℃ of control heating-up temperatures; Piston is forged dress special-purpose protruding, die be contained in respectively on the last lower table of 315T hydraulic press, punch is contained on the upper table through the punch connection, with the good fastening good housing screw of concentricity debugging; When initial workpiece is forged dress with about mould and die preheating to 300 ℃;
Dress is forged in d, extruding; The steel part that car is good has groove one end upwards vertically to put into die, again batch-type furnace is heated to 760 ℃ copper alloy material and takes out one with long hand vice and put on the die steel part, then two kinds of metals in the enforcement punch Extruding die under the process oil press; When hydraulic press pressure reaches 300T, return hydraulic press drive punch and withdraw from die; The up promotion push rod of oil cylinder will push and forge the composite piston install and eject under the process oil press then; With long hand vice composite piston is placed in natural air cooling together; The dress piston is forged in circulation extruding afterwards;
E, fine finishining; Forge dress composite piston blank and press high-voltage electrical apparatus product piston details figure fine finishining, steps such as promptly thick finish turning profile, drilling and tapping, groove milling deburring;
Emblem mark is played in f, check, the rust prevention packaging warehouse-in.
The material of former piston is a copper alloy, its tensile strength sigma
b365, Brinell hardness HB116; And the tensile strength sigma of steel
b593, Brinell hardness HB229.Contrast, can obviously find out with steel from two groups of mechanical performance data of above two kinds of materials than the piston rod strength character excellence made from copper alloy, owing to forge the tensile strength of mechanical property σ of the composite piston after adorning
bBe not less than σ
b365, the mechanical performance and the reliability of therefore forging the composite piston after adorning all satisfy high-voltage switch gear electric component practicality and service requirement.
Embodiment two
The forging dress technology of aluminium alloy and steel composite piston, concrete steps are equal to embodiment one, only are aluminium alloy material heating-up temperature in batch-type furnace is adjusted into 470 ℃, mould and die preheating to 300 ℃, it is consistent with embodiment one step to forge the dress technical process.The composite piston head is the non-ferrous metal aluminium alloy, and piston rod portion is 45 steel.The tensile strength sigma of aluminium alloy
b345, Brinell hardness is lower than copper alloy; The tensile strength sigma of steel
b593, Brinell hardness HB229.Contrast, can obviously find out with steel from two groups of mechanical performance data of above two kinds of materials than the piston rod strength character excellence made from aluminium alloy, owing to forge the tensile strength of mechanical property σ of the composite piston after adorning
bBe not less than σ
b345, the mechanical performance and the reliability of therefore forging the composite piston after adorning all satisfy high-voltage switch gear electric component practicality and service requirement.
Former piston is nonferrous alloy casting spare, and there are defectives such as pore, pin hole, sand holes in its inside, and can leak gas during work has a strong impact on reliability and usability requirement.The forging dress technology of embodiment one and embodiment two composite pistons; Piston crown with non-ferrous metal extrude bar, bar portion uses hot-rolled steel; Be squeezed into composite piston through forging dress again, its density high-mechanical property and reliability all satisfy the usability and the service requirement of high-voltage switch gear electric component.
In conjunction with Fig. 2, in the foregoing description, extruding is forged and is adorned used mould, comprises punch 8 and die, and die is arranged on the die holder 3; Punch 8 connects 9 through punch and is connected with the forcing press upper table, and the convex mould diameter size is held sizes greatly corresponding to piston head 7; Die comprises die plate insert 1 and die outer ring 2, is provided with in the die plate insert 1 and the corresponding shoulder hole of piston head 7 shapes; Die holder 3 upper ends are provided with boss, and boss puts in the die hole, and the boss outside dimension is corresponding to piston head small end size; Be provided with centre bore in the die holder, in order to hold piston rod 6 and push rod 4.When die holder is arranged on the press bench, backing plate 5 is set between workbench and die holder, backing plate 5 center drillings are convenient to push rod 4 and are passed.
This mould can be reused, and punch is not lubricated in the use, and die sprays rare graphite water.
Claims (10)
1. a dissimilar metal composite piston is forged dress technology, it is characterized in that: specifically comprise the steps:
A), with the step of dissimilar metal by Len req separately and weight blanking;
B), piston rod is used the metal charge made allowance, be processed into the piston rod profile, and the piston rod material after will processing places the step in the die on the press bench;
C), the piston head after will heating keeps flat on the die inner piston rod material with metal charge, the operating pressure machine makes the step of dissimilar metal moulding in the punch Extruding die;
D), forcing press ejects the composite piston that forging installs the composite piston that forging is installed takes out air cooling from die step;
E), repetitive operation c then)-d) step, produce continuously.
2. dissimilar metal composite piston according to claim 1 is forged dress technology, it is characterized in that: also be included in the punch-die that will forge the dress piston on the forcing press before the forging dress and debug the step of installing.
3. dissimilar metal composite piston according to claim 1 is forged dress technology, it is characterized in that: will forge the preceding piston head of dress and be heated to 650-900 ℃ with metal charge.
4. dissimilar metal composite piston according to claim 1 is forged dress technology, it is characterized in that: also comprise when initial workpiece is forged dress the step of mould and die preheating to 260-350 ℃.
5. dissimilar metal composite piston according to claim 1 is forged dress technology, it is characterized in that: in the said forging dress technical process, punch is not lubricated, and die sprays rare graphite water.
6. dissimilar metal composite piston according to claim 1 is forged dress technology, it is characterized in that: also comprise carrying out follow-up machined, the step of final shaping unit through the dress of the forging behind air cooling piston.
7. dissimilar metal composite piston according to claim 1 is forged dress technology, and it is characterized in that: said piston head uses metal charge to be copper alloy or aluminium alloy, and said piston rod uses metal charge to be steel.
8. one kind requires among the 1-7 each described dissimilar metal composite piston to forge the piston piece that dress explained hereafter goes out according to aforesaid right.
9. implement aforesaid right and require each described dissimilar metal composite piston forging dress technology among the 1-7, used mould is characterized in that: comprise punch (8) and die, die is arranged on the die holder (3); Punch (8) connects (9) through punch and is connected with the forcing press upper table, and the convex mould diameter size is held size greatly corresponding to piston head (7); Die comprises die plate insert (1) and die outer ring (2), and die outer ring (2) circle is located at die plate insert (1) periphery; Be provided with in the die plate insert (1) and the corresponding shoulder hole of piston head (7) shape; Die holder (3) upper end is provided with boss, and boss puts in the die hole, and the boss outside dimension is corresponding to piston head small end size; Be provided with centre bore in the die holder, in order to hold piston rod (6) and push rod (4).
10. mould according to claim 9 is characterized in that: when die holder (3) is arranged on the press bench, backing plate (5) is set between workbench and die holder; Backing plate (5) center drilling, push rod (4) passes from the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362033.7A CN102397968B (en) | 2011-11-15 | 2011-11-15 | A kind of forging dissimilar metal composite piston technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362033.7A CN102397968B (en) | 2011-11-15 | 2011-11-15 | A kind of forging dissimilar metal composite piston technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102397968A true CN102397968A (en) | 2012-04-04 |
| CN102397968B CN102397968B (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110362033.7A Active CN102397968B (en) | 2011-11-15 | 2011-11-15 | A kind of forging dissimilar metal composite piston technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511562A (en) * | 2013-12-14 | 2015-04-15 | 柳州市国顺机械制造有限公司 | Forming die for piston rod of loading machine |
| CN107030456A (en) * | 2017-03-23 | 2017-08-11 | 滨州东海龙活塞有限公司 | A kind of manufacturing process of built-up piston |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6032570A (en) * | 1998-04-10 | 2000-03-07 | Yamaha Hatsudoki Kabushiki Kaisha | Composite piston for machine |
| DE10113629A1 (en) * | 2001-03-21 | 2002-10-02 | Thyssen Krupp Automotive Ag | Production of pistons or piston components such as piston heads for internal combustion engines comprises pre-forging a base body in a specified axial direction and forging the pre-formed piston body in one further axial direction |
| CN101362157A (en) * | 2008-09-24 | 2009-02-11 | 河南科技大学 | Internal-combustion engine piston step-by-step extrusion forming method and its supporting forming die |
| JP4588553B2 (en) * | 2005-06-22 | 2010-12-01 | 本田技研工業株式会社 | Forging method and double-action die apparatus for forging |
| CN201720380U (en) * | 2010-06-03 | 2011-01-26 | 无锡职业技术学院 | Piston forging die |
-
2011
- 2011-11-15 CN CN201110362033.7A patent/CN102397968B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6032570A (en) * | 1998-04-10 | 2000-03-07 | Yamaha Hatsudoki Kabushiki Kaisha | Composite piston for machine |
| DE10113629A1 (en) * | 2001-03-21 | 2002-10-02 | Thyssen Krupp Automotive Ag | Production of pistons or piston components such as piston heads for internal combustion engines comprises pre-forging a base body in a specified axial direction and forging the pre-formed piston body in one further axial direction |
| JP4588553B2 (en) * | 2005-06-22 | 2010-12-01 | 本田技研工業株式会社 | Forging method and double-action die apparatus for forging |
| CN101362157A (en) * | 2008-09-24 | 2009-02-11 | 河南科技大学 | Internal-combustion engine piston step-by-step extrusion forming method and its supporting forming die |
| CN201720380U (en) * | 2010-06-03 | 2011-01-26 | 无锡职业技术学院 | Piston forging die |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511562A (en) * | 2013-12-14 | 2015-04-15 | 柳州市国顺机械制造有限公司 | Forming die for piston rod of loading machine |
| CN107030456A (en) * | 2017-03-23 | 2017-08-11 | 滨州东海龙活塞有限公司 | A kind of manufacturing process of built-up piston |
| CN107030456B (en) * | 2017-03-23 | 2023-08-04 | 滨州东海龙活塞有限公司 | Manufacturing process of combined piston |
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| Publication number | Publication date |
|---|---|
| CN102397968B (en) | 2016-10-05 |
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