CN105537304A - Cold extruded plunger processing method - Google Patents
Cold extruded plunger processing method Download PDFInfo
- Publication number
- CN105537304A CN105537304A CN201510766646.5A CN201510766646A CN105537304A CN 105537304 A CN105537304 A CN 105537304A CN 201510766646 A CN201510766646 A CN 201510766646A CN 105537304 A CN105537304 A CN 105537304A
- Authority
- CN
- China
- Prior art keywords
- blank
- extrusion
- cold
- volume
- treatment
- 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
Links
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000000641 cold extrusion Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 4
- XIVNZHXRIPJOIZ-UHFFFAOYSA-N octadecanoic acid;zinc Chemical compound [Zn].CCCCCCCCCCCCCCCCCC(O)=O XIVNZHXRIPJOIZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000004381 surface treatment Methods 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Detergent Compositions (AREA)
Abstract
The invention relates to the field of machining, and concretely relates to a cold extruded plunger processing method. The method comprises the following steps: inspecting a material, selectively inspecting the chemical components, the surface quality and the dimensions of each of batches of the ordered material, and using the requirement meeting raw material in production; cutting the raw material which is a solid rod, and deburrering the cut rod to remove burrers generated in the cutting process of the above blank; softening the cut rod before cold extrusion, cooing the softened cut rod in a furnace to 150DEG C, and detecting the hardness of the blank before and after treatment to obtain the hardness before treatment of HB68-72 and the hardness after treatment of HB38-40; and smearing a lubricant, and cleaning the blank, wherein the unit extrusion pressure is very large in the cold extrusion process, so the lubricant is coated to reduce the extrusion pressure, thereby the metal fluidity is good, the extruded wall thickness is uniform, the discharge force is small, and the surface fineness of a cold extruded member is improved; and the lubricant is zinc stearate powder. The method has the advantages of simple processing process, easy manufacturing, guaranteeing of the processing quality and the dimension precision of a workpiece, production efficiency improvement and production cost reduction.
Description
Technical field
The present invention relates to field of machining, be specifically related to cold extrusion plunger processing method.
Background technology
Petrol engine is the heart of motorcycle, and someone claims carburetor to be the heart of motorcycle engine, and plunger is the heart of plunger type carburetor.Therefore, as the plunger of carburetor heart, the selecting of its material, process, surface treatment level, have a direct impact the performance of carburetor assembly.And in plunger process, there is a lot of problem, and difficulty of processing is large, production cost is high.
Summary of the invention
In order to solve the problem, the invention provides a kind of process simple, be easy to manufacture, and crudy and the dimensional accuracy of workpiece can be ensured, enhancing productivity, reducing the cold extrusion plunger processing method of production cost.
Cold extrusion plunger processing method, comprises the following steps:
The first step, check material, the material often criticizing order should spot-check chemical composition, surface quality and size, and satisfactory raw material just can put into production;
Second step, cuts off, because blank materials are solid bar, first calculates charge length before cut-out, the volume by volume permanence condition calculating of blank, and should add deburring amount, namely
, in formula:
for blank volume,
for extrusion volume,
for deburring amount volume, generally,
get
3%-5%, the shearing length of woollen is
in formula:
for charge length,
for blank area of section;
3rd step, deburring, the burr produced when removing cutting ingot;
4th step, sofening treatment, carries out sofening treatment before cold extrusion, and concrete annealing specification is: 410 DEG C, is incubated 10 hours, is cooled to 150 DEG C with stove, and before detection sofening treatment, blank hardness is HB68-72, and after process, blank hardness is HB38-40;
5th step, is coated with lubricant, during cold extrusion, extrusion pressure is very large, be coated with lubricant and can reduce extruding force, make metal fluidity good, extruding uniform wall thickness, stripping force is little, improve the surface smoothness of cold-extruded part, make to be with lubricator stearic acid zinc powder, blank is cleaned up, be placed in cylinder together with powder stearic acid zinc powder and roll, make blank material firmly and equably be coated with last layer zinc stearate;
6th step, cold extrusion blank, cold extrusion is exactly that mold cavity put into by metal stock, under powerful pressure and certain speed effect, forces metal to be extruded from die cavity, thus obtains required form, size and have the extrusion of certain mechanical property.
7th step, heat treatment, and carry out surface treatment.
Process of the present invention is simple, is easy to manufacture, and can ensure crudy and the dimensional accuracy of workpiece, enhances productivity, and reduces production cost.
Detailed description of the invention
Cold extrusion plunger processing method, comprises the following steps:
The first step, check material, the material often criticizing order should spot-check chemical composition, surface quality and size, and satisfactory raw material just can put into production;
Second step, cuts off, because blank materials are solid bar, first calculates charge length before cut-out, the volume by volume permanence condition calculating of blank, and should add deburring amount, namely
, in formula:
for blank volume,
for extrusion volume,
for deburring amount volume, generally,
get
3%-5%, the shearing length of woollen is
in formula:
for charge length,
for blank area of section;
3rd step, deburring, the burr produced when removing cutting ingot;
4th step, sofening treatment, carries out sofening treatment before cold extrusion, and concrete annealing specification is: 410 DEG C, is incubated 10 hours, is cooled to 150 DEG C with stove, and before detection sofening treatment, blank hardness is HB68-72, and after process, blank hardness is HB38-40;
5th step, is coated with lubricant, during cold extrusion, extrusion pressure is very large, be coated with lubricant and can reduce extruding force, make metal fluidity good, extruding uniform wall thickness, stripping force is little, improve the surface smoothness of cold-extruded part, make to be with lubricator stearic acid zinc powder, blank is cleaned up, be placed in cylinder together with powder stearic acid zinc powder and roll, make blank material firmly and equably be coated with last layer zinc stearate;
6th step, cold extrusion blank, cold extrusion is exactly that mold cavity put into by metal stock, under powerful pressure and certain speed effect, forces metal to be extruded from die cavity, thus obtains required form, size and have the extrusion of certain mechanical property.
7th step, heat treatment, and carry out surface treatment.
Process of the present invention is simple, is easy to manufacture, and can ensure crudy and the dimensional accuracy of workpiece, enhances productivity, and reduces production cost.
Claims (1)
1. a cold extrusion plunger processing method, is characterized in that, comprises the following steps:
The first step, check material, the material often criticizing order should spot-check chemical composition, surface quality and size, and satisfactory raw material just can put into production;
Second step, cuts off, because blank materials are solid bar, first calculates charge length before cut-out, the volume by volume permanence condition calculating of blank, and should add deburring amount, namely
, in formula:
for blank volume,
for extrusion volume,
for deburring amount volume, generally,
get
3%-5%, the shearing length of woollen is
in formula:
for charge length,
for blank area of section;
3rd step, deburring, the burr produced when removing cutting ingot;
4th step, sofening treatment, carries out sofening treatment before cold extrusion, and concrete annealing specification is: 410 DEG C, is incubated 10 hours, is cooled to 150 DEG C with stove, and before detection sofening treatment, blank hardness is HB68-72, and after process, blank hardness is HB38-40;
5th step, is coated with lubricant, during cold extrusion, extrusion pressure is very large, be coated with lubricant and can reduce extruding force, make metal fluidity good, extruding uniform wall thickness, stripping force is little, improve the surface smoothness of cold-extruded part, make to be with lubricator stearic acid zinc powder, blank is cleaned up, be placed in cylinder together with powder stearic acid zinc powder and roll, make blank material firmly and equably be coated with last layer zinc stearate;
6th step, cold extrusion blank, cold extrusion is exactly that mold cavity put into by metal stock, under powerful pressure and certain speed effect, forces metal to be extruded from die cavity, thus obtains required form, size and have the extrusion of certain mechanical property.
7th step, heat treatment, and carry out surface treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766646.5A CN105537304A (en) | 2015-11-12 | 2015-11-12 | Cold extruded plunger processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766646.5A CN105537304A (en) | 2015-11-12 | 2015-11-12 | Cold extruded plunger processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105537304A true CN105537304A (en) | 2016-05-04 |
Family
ID=55817132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510766646.5A Pending CN105537304A (en) | 2015-11-12 | 2015-11-12 | Cold extruded plunger processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105537304A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106378632A (en) * | 2016-10-19 | 2017-02-08 | 扬州星月燃油喷射有限公司 | Precise forming mechanism of oil pump oil mouth plunger sleeve |
| CN106862289A (en) * | 2017-03-13 | 2017-06-20 | 谷城天兴机械有限公司 | The cold extrusion processing technics for preventing the brake shoe roller axle shaft shoulder from offseting |
| CN111702433A (en) * | 2020-06-29 | 2020-09-25 | 陕西奉航橡胶密封件有限责任公司 | Backflow line extrusion forming cutter and backflow line cold extrusion forming process |
| CN111992992A (en) * | 2020-08-21 | 2020-11-27 | 任奋 | Novel inner hexagonal plug screw blank forming process |
| CN112025229A (en) * | 2020-09-10 | 2020-12-04 | 天津市顺泽采油设备有限公司 | Machining method of plunger for oil well pump |
| CN115255258A (en) * | 2022-08-02 | 2022-11-01 | 无锡时硕五杰机械有限公司 | Method for changing full cutting into forging of spline sleeve of multi-core optical fiber connector |
-
2015
- 2015-11-12 CN CN201510766646.5A patent/CN105537304A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106378632A (en) * | 2016-10-19 | 2017-02-08 | 扬州星月燃油喷射有限公司 | Precise forming mechanism of oil pump oil mouth plunger sleeve |
| CN106862289A (en) * | 2017-03-13 | 2017-06-20 | 谷城天兴机械有限公司 | The cold extrusion processing technics for preventing the brake shoe roller axle shaft shoulder from offseting |
| CN111702433A (en) * | 2020-06-29 | 2020-09-25 | 陕西奉航橡胶密封件有限责任公司 | Backflow line extrusion forming cutter and backflow line cold extrusion forming process |
| CN111992992A (en) * | 2020-08-21 | 2020-11-27 | 任奋 | Novel inner hexagonal plug screw blank forming process |
| CN112025229A (en) * | 2020-09-10 | 2020-12-04 | 天津市顺泽采油设备有限公司 | Machining method of plunger for oil well pump |
| CN115255258A (en) * | 2022-08-02 | 2022-11-01 | 无锡时硕五杰机械有限公司 | Method for changing full cutting into forging of spline sleeve of multi-core optical fiber connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160504 |
|
| WD01 | Invention patent application deemed withdrawn after publication |