CN101791757A - Process for manufacturing sedan suspension turning drive ball head long draw bars - Google Patents
Process for manufacturing sedan suspension turning drive ball head long draw bars Download PDFInfo
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- CN101791757A CN101791757A CN200910247500A CN200910247500A CN101791757A CN 101791757 A CN101791757 A CN 101791757A CN 200910247500 A CN200910247500 A CN 200910247500A CN 200910247500 A CN200910247500 A CN 200910247500A CN 101791757 A CN101791757 A CN 101791757A
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- handled
- long draw
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- cold
- ball head
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000725 suspension Substances 0.000 title claims abstract description 14
- 238000007514 turning Methods 0.000 title claims abstract description 14
- 238000000641 cold extrusion Methods 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000005516 engineering process Methods 0.000 claims description 16
- 238000007127 saponification reaction Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 239000006247 magnetic powder Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 4
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 9
- 238000003754 machining Methods 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 abstract description 4
- 238000005242 forging Methods 0.000 abstract description 3
- 238000007670 refining Methods 0.000 abstract 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 5
- 230000001413 cellular effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 230000001869 rapid Effects 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The invention discloses a process for manufacturing sedan suspension turning drive ball head long draw bars, adopting the cold extruding process. The process comprises the following steps of: selecting 40 Cr steel materials; blanking for obtaining blank close to the diameter of the largest first diameter section of the long draw bar; firstly carrying out thermal refining to keep the tensile strength of the blank to be in the range of 880N/mm<2> to 890 N/mm<2>; and then carrying out cold extrusion for molding. In the invention, a set of cold extruding process suitable for the sedan suspension turning drive ball head long draw bars is summarized through a large amount of experiments, and the entire comprehensive performance indexes of parts are ensured to meet the requirements when the entire process is completed. The consumption of raw materials by adopting the extrusion process is reduced by 21.6% than the consumption of the raw materials of the traditional hot forging process. The process of the invention simplifies the production procedure and reduces the energy consumption, and the production cost (raw materials are not included) is reduced by about 15% than the production cost of traditional process including hot forging , thermal refining and machining process. In addition, the process reduces the labor intensity of operators.
Description
Technical field
The present invention relates to a kind of manufacturing process of automobile-used parts, relate in particular to a kind of manufacturing process of ball head long draw.
Background technology
Complex-shaped sedan suspension turning drive ball head long draw bars part, the forming technology that domestic present employing forge hot combines with machined.Because the limitation of manufacturing equipment and technology etc., the problems such as flexural deformation, dimensional accuracy and surface quality of generation workpiece cause product percent of pass low in the production process, and under situation about producing in enormous quantities, production cost is difficult to bear.And production efficiency is low, labour intensity is big, energy resource consumption is high.
Its shape comprises the bulb part 1 of diameter maximum and 2,3, the 4 pull bar sections that diameter of section reduces successively as shown in Figure 1; Its length is 318 ± 1mm, and sphere diameter is 27.5
+ 0.8Mm, third gear cylinder step dimension is respectively
16.2 ± 0.2mm,
14.2mm and
12.95.
These part performance indications require than higher (as following table),
| Tensile strength Rm | Bulb allows maximum intensity | Percentage elongation A | Shrinkage factor Z | Impact absorbing energy Ku2 | Metallographic structure (GB/T 13320) | |
| Performance indications | ??880N/mm 2～??1030N/mm 2 | ??1300N/mm 2 | ??≥9％ | ??≥45％ | ??≥47J | The 1-4 level |
Therefore, prior art all is to adopt thermal forging technology to satisfy its performance requirement, and its manufacturing process is as follows:
Blanking → tack centering → centreless grinding cylindrical → magnetic powder inspection → local heat → hot rammer bulb → modified (heat treatment) → alignment → ball blast → car bar portion's step and bulb overlap → mill hexagonal.Its stock utilization of conventional process flow low (about 73.4%), production efficiency is low.
Summary of the invention
Technical problem to be solved by this invention provides a kind of cold-extrusion technology and produces the sedan suspension turning drive ball head long draw bars part; the requirement of mechanical performance and dimensional accuracy can be satisfied, the protection of labour intensity, promotion environment and resource can be reduced production costs, reduce again.
The present invention is for solving the problems of the technologies described above, and technical scheme provided by the invention is as follows:
A kind of manufacturing process of sedan suspension turning drive ball head long draw bars, this process using cold-extrusion technology, its step comprises:
1) choose 40Cr steel material, blanking obtains blank;
2) magnetic powder inspection;
3) heat treatment quenching and tempering, this modified process makes the tensile strength of blank remain on 880N/mm
2～890N/mm
2In the scope;
4) cylindrical grinding makes its diameter reach the first diameter segment dimensional requirement of long draw maximum;
5) blank surface is handled
Handle on pre-surface, for improving the blank surface quality, and be later phosphatization handle and lubricated ready, adopt alkalization processing;
The phosphatization saponification is handled, and phosphatization is handled on the surface of blank and dissolving and corrosion taken place and form the insoluble supporting course of one deck (be made up of tiny flaky crystal tissue, be cellular), plays kind of lubricant storage during for lubricated; Saponification is handled blank is lubricated processing;
6) the cold-extruded bar that contracts forms the second and the 3rd diameter segment of long draw;
7) the phosphatization saponification is handled;
8) cold-extruded bulb preform;
9) the cold-heading bulb is shaped and the cold-extruded hexagonal.
The parameter of the modulation treatment described in the above-mentioned steps 3 is as follows
Hardening heat: 855 ℃～865 ℃
Quenching Soaking Time: 50min～60min
(the back hardness of quenching: 〉=45HRC)
Temperature: 560 ℃～570 ℃
Tempering insulation time: 100min～120min
(temper number: 250HBW～280HBW).
Described alkalization in the above-mentioned steps 5 is handled, and selects the naoh treatment agent for use, and treatment temperature is 60 ℃, and the processing time is 20min; Phosphatization is handled and selected trbasic zinc phosphate, treatment temperature for use is 75 ℃, and the processing time is 10min; Saponification is handled and is selected saponification liquor for use.
Technology of the present invention goes out the cold-extrusion technology that a cover is applicable to sedan suspension turning drive ball head long draw bars by a large amount of Test Summaries, at first after large quantities of steel screenings to 45 steel, 20 steel, 20Cr steel etc., determine that the 40Cr steel is suitable for cold-extrusion technology the most, other steel combination property of each section behind cold-extrusion technology is difficult to satisfy performance indications.Second, this technology is selected the blank near the first diameter segment diameter of long draw maximum for use, carry out modifier treatment earlier, make the lower limit of its tensile strength near pull bar part performance indications, carry out cold-extrusion shaping then, in the cold extrusion process, second, the intensity of the 3rd diameter segment and bulb section, hardness will increase, percentage elongation then reduces, if the performance state of modifier treatment will make second before the cold extrusion so do not control well, the 3rd diameter segment or the performance number of bulb section after cold extrusion exceed index, determine that through a large amount of tests the tensile strength of blank should remain on 880N/mm after the modifier treatment before cold extrusion
2～890N/mm
2Be only in the scope, can guarantee that just the integrated performance index of part integral body after whole processing technology is finished all meets the requirements.
And sum up a cover the most reasonably quenching-and-tempering process make blank reach before the cold extrusion the most reasonably combination property state.
When cold extrusion, extrusion pressure is big, and the general lubricant of brushing can be squeezed out fully, does not have lubrication.Therefore, must carry out surface treatment to blank before the cold extrusion, it is that surface preparation, phosphatization are handled and lubricated that surface treatment divided for three steps.
Through the blank outside of centreless grinding cylindrical residual dirt, surface preparation being arranged is for improving the blank surface quality, and be that later phosphatization is handled and lubricated is got ready.Through a large amount of tests relatively, it is thorough inadequately that washing agent processing and acidifying are handled back blank surface cleaning, influence the phosphate treated of back, and alkalization result is more satisfactory, handles so the cold-extruded part surface preparation adopts alkalization to learn.
Phosphate treated also claims " phosphatization processing ", be the blank of surface cleaning to be put into phosphoric acid solution handle, dissolving and corrosion taking place on the surface of blank and form the insoluble supporting course of one deck (is made up of tiny flaky crystal tissue, be cellular), play kind of lubricant storage during for lubricated.
Blank after phosphatization is handled also needs to be lubricated processing, and lubricated quality is related to the size of extruding force, the surface quality of extrusion and the service life of mould.
The manufacturing process that the present invention goes out through a large amount of Test Summaries is compared with the manufacturing process of existing first forge hot+modified+process for machining has tangible advantage:
(1) raw material of original forge hot+modified+process for machining:
18 * 355mm, 705g.
Adopt the raw material of cold extrusion manufacturing process of the present invention:
16.5 * 332mm, 553g.
Adopt the raw material minimizing 152g of the raw material of extrusion process, reduce raw materials consumption 21.6% than original forge hot+modified+process for machining;
(2) work simplification of the present invention production process, reduced energy resource consumption, its production cost (not comprising raw material) reduces about 15% than the production cost of original forge hot+modified+process for machining;
(3) technology of the present invention can reduce labor intensity of operating personnel, reduces the influence of eddy-current heating to human body, is producing same product in batches; can reduce the heat treatment output; not only reduce the energy, reduce influence simultaneously, play the effect of protection environment environment.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 is the structural representation of sedan suspension turning drive ball head long draw bars.
1. bulb section 2. long draws first diameter segment
3. long draw second diameter segment 4. long draws the 3rd diameter segment
The specific embodiment
A kind of manufacturing process of sedan suspension turning drive ball head long draw bars, this process using cold-extrusion technology, its step comprises:
1) choose 40Cr steel material, blanking obtains
16.5 * 332mm blank;
2) magnetic powder inspection;
3) heat treatment quenching and tempering, this modified process makes the tensile strength of blank remain on 880N/mm
2～890N/mm
2In the scope;
Its technological parameter is as follows:
Hardening heat: 855 ℃～865 ℃
Temperature retention time: 50min～60min
Back hardness: 〉=45HRC quenches
Temperature: 560 ℃～570 ℃
Temperature retention time: 100min～120min
Temper number: 250HBW～280HBW
The technological parameter of each embodiment such as following table:
4) cylindrical grinding makes its diameter reach the first diameter segment dimensional requirement of long draw maximum
16.2mm;
5) blank surface is handled
Handle on pre-surface, for improving the blank surface quality, and be that later phosphatization is handled and lubricated is got ready, adopting alkalization to learn handles, select NaOH for use, treatment temperature is 60 ℃, and the processing time is 20min (also can use other common alkali chemical surface treatment agent); The phosphatization saponification is handled, phosphatization is handled on the surface of blank and dissolving is taken place and corrode and form the insoluble supporting course of one deck (to be made up of tiny flaky crystal tissue, be cellular), play kind of lubricant storage during for lubricated, phosphatization is handled the PB-181X trbasic zinc phosphate of selecting the Shanghai rapids smart Co., Ltd of handkerchief card for use, treatment temperature is 75 ℃, and the processing time is 10min (also can select other trbasic zinc phosphate or other phosphating agent for use);
Saponification is handled blank is lubricated processing, selects the LUB-235 saponification liquor (also can select other saponification liquor or other saponification inorganic agent for use) of the Shanghai rapids smart Co., Ltd of handkerchief card for use;
6) the cold-extruded bar that contracts forms the second and the 3rd diameter segment of long draw;
7) the phosphatization saponification is handled;
8) cold-extruded bulb preform
9) the cold-heading bulb is shaped and the cold-extruded hexagonal.
The finished part that each embodiment obtains is done all-round property testing, and its result is as follows:
The combination property of the sedan suspension turning drive ball head long draw bars that makes with manufacturing process of the present invention meets every performance indications fully, has saved the material and the energy simultaneously, has simplified production process, has reduced production cost, has reduced labour intensity.
Claims (3)
1. the manufacturing process of a sedan suspension turning drive ball head long draw bars is characterized in that this process using cold-extrusion technology, and its step comprises:
1) choose 40Cr steel material, blanking obtains blank;
2) magnetic powder inspection;
3) heat treatment quenching and tempering, this modified process makes the tensile strength of blank remain on 880N/mm
2～890N/mm
2In the scope;
4) cylindrical grinding makes its diameter reach the first diameter segment dimensional requirement of long draw maximum;
5) blank surface is handled
Handle on pre-surface, for improving the blank surface quality, and be later phosphatization handle and lubricated ready, adopt alkalization processing;
The phosphatization saponification is handled, and phosphatization is handled on the surface of blank and dissolving and corrosion taken place and form the insoluble supporting course of one deck, plays kind of lubricant storage during for lubricated; Saponification is handled blank is lubricated processing;
6) the cold-extruded bar that contracts forms the second and the 3rd diameter segment of long draw;
7) the phosphatization saponification is handled;
8) cold-extruded bulb preform;
9) the cold-heading bulb is shaped and the cold-extruded hexagonal.
2. the manufacturing process of sedan suspension turning drive ball head long draw bars according to claim 1, it is characterized in that: the parameter of the modulation treatment described in the above-mentioned steps 3 is as follows
Hardening heat: 855 ℃～865 ℃
Quenching Soaking Time: 50min～60min
Temperature: 560 ℃～570 ℃
Tempering insulation time: 100min～120min.
3. the manufacturing process of sedan suspension turning drive ball head long draw bars according to claim 1 and 2 is characterized in that: the described alkalization in the above-mentioned steps 5 is handled, and selects the naoh treatment agent for use, and treatment temperature is 60 ℃, and the processing time is 20min; Phosphatization is handled and selected trbasic zinc phosphate, treatment temperature for use is 75 ℃, and the processing time is 10min; Saponification is handled and is selected saponification liquor for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910247500A CN101791757A (en) | 2009-12-30 | 2009-12-30 | Process for manufacturing sedan suspension turning drive ball head long draw bars |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910247500A CN101791757A (en) | 2009-12-30 | 2009-12-30 | Process for manufacturing sedan suspension turning drive ball head long draw bars |
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| Publication Number | Publication Date |
|---|---|
| CN101791757A true CN101791757A (en) | 2010-08-04 |
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ID=42584789
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|---|---|---|---|
| CN200910247500A Pending CN101791757A (en) | 2009-12-30 | 2009-12-30 | Process for manufacturing sedan suspension turning drive ball head long draw bars |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772606A (en) * | 2015-04-21 | 2015-07-15 | 珠海格力电器股份有限公司 | Robot ball head machining method |
| CN104791375A (en) * | 2015-03-10 | 2015-07-22 | 芜湖禾田汽车工业有限公司 | Automobile ball pin and preparation method thereof |
| CN105014312A (en) * | 2015-06-04 | 2015-11-04 | 昆明新道为机械制造有限公司 | Processing method for fork-shaped pull rods |
| CN106239067A (en) * | 2016-08-31 | 2016-12-21 | 绍兴熔岩机械有限公司 | A kind of manufacturing process of automobile steering ball |
| CN107322249A (en) * | 2017-09-03 | 2017-11-07 | 安徽天裕汽车零部件制造有限公司 | A kind of production technology of automobile ball head |
| CN109877264A (en) * | 2019-01-11 | 2019-06-14 | 姚国辉 | A kind of ball stud cold upsetting forming die and moulding process |
| CN111185729A (en) * | 2020-01-21 | 2020-05-22 | 中车齐齐哈尔车辆有限公司 | Forging process method for middle pull rod |
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2009
- 2009-12-30 CN CN200910247500A patent/CN101791757A/en active Pending
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|---|---|---|---|---|
| CN1507963A (en) * | 2002-12-17 | 2004-06-30 | 张俊清 | Spline shaft processing method using cold extrusion of meidium carbon steel |
| CN1651789A (en) * | 2005-01-28 | 2005-08-10 | 陈波 | Cold extruding process for producing conic trianglar teeth of conic clutch |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791375A (en) * | 2015-03-10 | 2015-07-22 | 芜湖禾田汽车工业有限公司 | Automobile ball pin and preparation method thereof |
| CN104772606A (en) * | 2015-04-21 | 2015-07-15 | 珠海格力电器股份有限公司 | Robot ball head machining method |
| CN105014312A (en) * | 2015-06-04 | 2015-11-04 | 昆明新道为机械制造有限公司 | Processing method for fork-shaped pull rods |
| CN106239067A (en) * | 2016-08-31 | 2016-12-21 | 绍兴熔岩机械有限公司 | A kind of manufacturing process of automobile steering ball |
| CN106239067B (en) * | 2016-08-31 | 2018-12-18 | 绍兴熔岩机械有限公司 | A kind of manufacturing process of automobile steering ball |
| CN107322249A (en) * | 2017-09-03 | 2017-11-07 | 安徽天裕汽车零部件制造有限公司 | A kind of production technology of automobile ball head |
| CN109877264A (en) * | 2019-01-11 | 2019-06-14 | 姚国辉 | A kind of ball stud cold upsetting forming die and moulding process |
| CN111185729A (en) * | 2020-01-21 | 2020-05-22 | 中车齐齐哈尔车辆有限公司 | Forging process method for middle pull rod |
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Application publication date: 20100804 |