CN105479113A - Preparation method of vehicle front bumper bar - Google Patents
Preparation method of vehicle front bumper bar Download PDFInfo
- Publication number
- CN105479113A CN105479113A CN201510994918.7A CN201510994918A CN105479113A CN 105479113 A CN105479113 A CN 105479113A CN 201510994918 A CN201510994918 A CN 201510994918A CN 105479113 A CN105479113 A CN 105479113A
- Authority
- CN
- China
- Prior art keywords
- slip yoke
- temperature
- forging
- preparation
- incubated
- 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.)
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
Abstract
The invention discloses a preparation method of a vehicle front bumper bar. The preparation method is characterized by comprising the following steps: a steel ingot with the following components in percentage by weight is prepared and cast: C not more than 1.94% and not less than 1.37%, Si not more than 0.35% and not less than 0.15%, Mn not more than 0.90% and not less than 0.70%, P not more than 0.35% and not less than 0.25, S not more than 0.025% and not less than 0.015, Cr not more than 0.95% and not less than 0.70%, Mo not more than 0.40% and not less than 0.30%, Ni not more than 2.00% and not less than 1.60, Al not more than 0.24% and not less than 0.13, and the balance of Fe and inevitable impurities; and the steel ingot molded through casting is cooled to a temperature of 300 DEG C, is heated up to a temperature of 670-760 DEG C for keeping 3-5 hours, is cooled to a temperature of 300 DEG C in a furnace for keeping 4 hours, is heated up to a temperature of 650-760 DEG C for keeping 10 hours, is cooled to a temperature of 400 DEG C at a speed of 50 DEG C/h, and is cooled to a temperature of 140 DEG C at a speed of 20 DEG C/h. The preparation method is convenient for blank manufacturing, high in efficiency and easy to mold through forging; a forged slide fork is high in strength, long in service life, safe and reliable; and the preparation method is suitable for large-batch production of slide forks with various model numbers.
Description
Technical field
The present invention relates to the manufacture method of slip yoke, specifically belong to a kind of preparation method of automotive front crash bar.
Background technology
Slip yoke is one of major part on steering axle of automobile, and vehicle steadily can be made to travel and sensitive transmission travel direction, and the function of slip yoke bears automotive front load, support and drives front-wheel to make motor turning around stub rotation.This product of large batch of production, large by labor intensity of operating staff, product quality is entirely with manual control, labour-intensive technology, and be inappropriately use this technique, production efficiency is very low.
Summary of the invention
The object of this invention is to provide a kind of preparation method of automotive front crash bar, base is convenient, and efficiency is high, and forging molding is easy, and the slip yoke intensity forged is good, and long service life is safe and reliable, is applicable to the production in enormous quantities of the slip yoke of various model.
Technical scheme of the present invention is as follows:
A preparation method for automotive front crash bar, has following steps:
A) preparation and casting have the steel ingot of following percentage by weight: 1.37%≤C≤1.94%, 0.15≤Si≤0.35%, 0.70%≤Mn≤0.90%, 0.25≤P≤0.35%, 0.015≤S≤0.025%, 0.70%≤Cr≤0.95%, 0.30%≤Mo≤0.40%, 1.60≤Ni≤2.00%, 0.13≤Al≤0.24%, surplus is Fe and inevitable impurity, the steel ingot temperature of casting is down to 300 DEG C, be heated to 670-760 DEG C again, insulation 3-5 hour, stove is chilled to 300 DEG C, be incubated 4 hours, be heated to 650-760 DEG C again, be incubated 10 hours, 400 DEG C are cooled to 50 DEG C/h, again with 20 DEG C/h, be cooled to 140 DEG C,
B), cylinder blank is heated to 1150-1250 DEG C of temperature by electrical induction mode, then the shaping completing precut blanks is entered in cross wedge rolling machine, this work step completes the shaping in slip yoke forging bar portion, during forging, first the precut blanks that cross wedge rolling is made is put into lower cavity die, then go up, lower cavity die matched moulds, and apply the bar portion that pressing mold defeats tight upper and lower mould clamping blank and realize the accurate of blank, stable position, then use, the fork of low punch extrusion blank, metal is forced to be full of, lower cavity die die cavity, complete the Accurate Shaping of forging, in a fire, adopt wedge rolling preparation base, by upper lower cavity die clamping blank bar portion during finish-forging, realize the accurate location in blank forging process, the precise forming of slip yoke forging fork is realized by upper low punch extrusion blank head, excision prong gross weight three master operations complete forging process,
C) the described slip yoke semi-finished product generated in step b) are heated to 980 DEG C and are incubated 1-2h, and oil cooling is to higher than reheating the temperature range to 680 DEG C-750 DEG C after 100 DEG C and being incubated 2h, water-cooled afterwards; After temper, again the head of slip yoke is heated to 320-380 DEG C, insulation 4-5 hour, then misting cooling process, the afterbody of slip yoke, at 900-1020 DEG C, is incubated 6-8 hour, then air cooling, heating to temperature in the middle part of last slip yoke is again 160 ~ 180 DEG C, and insulation 2-3 hour, puts into iron case cooling in heap;
D) roughing is carried out to the base substrate generated in step c);
E) phosphorating treatment, be 280-300 DEG C by workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, employing pH value is the surface conditioner process 1-2min of 8, after dripping empty 1-2min, adopt bonderite process 15-20min, then after dripping empty 1-2min, adopt clean water 1-2min, after dripping empty 1-2min again, process 0.5-1min with hot water workpiece being placed in 78-100 DEG C;
F) machined is carried out to make described slip yoke to generating base substrate in step c).
The head of described step e) slip yoke base substrate is heated to 350 DEG C, is incubated 4.5 hours, then misting cooling process, the afterbody of slip yoke, at 980 DEG C, is incubated 7 hours, then air cooling, heating to temperature in the middle part of last slip yoke is again 170 DEG C, is incubated 2.5 hours, puts into iron case cooling in heap.
Base of the present invention is convenient, and efficiency is high, and forging molding is easy, and the slip yoke intensity forged is good, and long service life is safe and reliable, is applicable to the production in enormous quantities of the slip yoke of various model.
The mechanical property of slip yoke of the present invention: tensile strength Rm >=830Mpa, yield strength Re >=690Mpa, percentage elongation A >=14%, mechanical property Z >=30%.
Detailed description of the invention
A preparation method for automotive front crash bar, has following steps:
A) preparation and casting have the steel ingot of following percentage by weight: 1.37%≤C≤1.94%, 0.15≤Si≤0.35%, 0.70%≤Mn≤0.90%, 0.25≤P≤0.35%, 0.015≤S≤0.025%, 0.70%≤Cr≤0.95%, 0.30%≤Mo≤0.40%, 1.60≤Ni≤2.00%, 0.13≤Al≤0.24%, surplus is Fe and inevitable impurity, the steel ingot temperature of casting is down to 300 DEG C, be heated to 670-760 DEG C again, insulation 3-5 hour, stove is chilled to 300 DEG C, be incubated 4 hours, be heated to 650-760 DEG C again, be incubated 10 hours, 400 DEG C are cooled to 50 DEG C/h, again with 20 DEG C/h, be cooled to 140 DEG C,
B), cylinder blank is heated to 1150-1250 DEG C of temperature by electrical induction mode, then the shaping completing precut blanks is entered in cross wedge rolling machine, this work step completes the shaping in slip yoke forging bar portion, during forging, first the precut blanks that cross wedge rolling is made is put into lower cavity die, then go up, lower cavity die matched moulds, and apply the bar portion that pressing mold defeats tight upper and lower mould clamping blank and realize the accurate of blank, stable position, then use, the fork of low punch extrusion blank, metal is forced to be full of, lower cavity die die cavity, complete the Accurate Shaping of forging, in a fire, adopt wedge rolling preparation base, by upper lower cavity die clamping blank bar portion during finish-forging, realize the accurate location in blank forging process, the precise forming of slip yoke forging fork is realized by upper low punch extrusion blank head, excision prong gross weight three master operations complete forging process,
C) the described slip yoke semi-finished product generated in step b) are heated to 980 DEG C and are incubated 1-2h, and oil cooling is to higher than reheating the temperature range to 680 DEG C-750 DEG C after 100 DEG C and being incubated 2h, water-cooled afterwards; After temper, then the head of slip yoke base substrate is heated to 350 DEG C, is incubated 4.5 hours, then misting cooling process, the afterbody of slip yoke, at 980 DEG C, is incubated 7 hours, then air cooling, heating to temperature in the middle part of last slip yoke is again 170 DEG C, is incubated 2.5 hours, puts into iron case cooling in heap;
D) roughing is carried out to the base substrate generated in step c);
E) phosphorating treatment, be 280-300 DEG C by workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, employing pH value is the surface conditioner process 1-2min of 8, after dripping empty 1-2min, adopt bonderite process 15-20min, then after dripping empty 1-2min, adopt clean water 1-2min, after dripping empty 1-2min again, process 0.5-1min with hot water workpiece being placed in 78-100 DEG C;
F) machined is carried out to make described slip yoke to generating base substrate in step e).
Claims (2)
1. a preparation method for automotive front crash bar, is characterized in that, has following steps:
A) preparation has the steel ingot of following alloying element percentage by weight: 1.52%≤C≤1.86%, 1.05≤Si≤1.25%, 0.55%≤Mn≤0.65%, 0.0025≤P≤0.0035%, 0.0015≤S≤0.0025%, 1.45%≤Cr≤1.65%, 0.2%≤Mo≤0.4%, 1.60≤Ni≤2.00%, 0.03≤Nb≤0.06%, 0.1%≤Ba≤0.2%, surplus is Fe and inevitable impurity;
B), cylinder blank is heated to 1150-1250 DEG C of temperature by electrical induction mode, then the shaping completing precut blanks is entered in cross wedge rolling machine, this work step completes the shaping in slip yoke forging bar portion, during forging, first the precut blanks that cross wedge rolling is made is put into lower cavity die, then go up, lower cavity die matched moulds, and apply the bar portion that pressing mold defeats tight upper and lower mould clamping blank and realize the accurate of blank, stable position, then use, the fork of low punch extrusion blank, metal is forced to be full of, lower cavity die die cavity, complete the Accurate Shaping of forging, in a fire, adopt wedge rolling preparation base, by upper lower cavity die clamping blank bar portion during finish-forging, realize the accurate location in blank forging process, the precise forming of slip yoke forging fork is realized by upper low punch extrusion blank head, excision prong gross weight three master operations complete forging process,
C) the described slip yoke semi-finished product generated in step b) are heated to 980 DEG C and are incubated 1-2h, and oil cooling is to higher than reheating the temperature range to 680 DEG C-750 DEG C after 100 DEG C and being incubated 2h, water-cooled afterwards; After temper, again the head of slip yoke is heated to 320-380 DEG C, insulation 4-5 hour, then misting cooling process, the afterbody of slip yoke, at 900-1020 DEG C, is incubated 6-8 hour, then air cooling, heating to temperature in the middle part of last slip yoke is again 160 ~ 180 DEG C, and insulation 2-3 hour, puts into iron case cooling in heap;
D) roughing is carried out to the base substrate generated in step c);
E) phosphorating treatment, be 280-300 DEG C by workpiece at showing tremendous enthusiasm closure temperature at normal temperatures, employing pH value is the surface conditioner process 1-2min of 8, after dripping empty 1-2min, adopt bonderite process 15-20min, then after dripping empty 1-2min, adopt clean water 1-2min, after dripping empty 1-2min again, process 0.5-1min with hot water workpiece being placed in 78-100 DEG C;
F) machined is carried out to make described slip yoke to generating base substrate in step e).
2. the preparation method of automotive front crash bar according to claim 1, it is characterized in that, the head of described step c) slip yoke base substrate is heated to 350 DEG C, is incubated 4.5 hours, then misting cooling process, the afterbody of slip yoke is at 980 DEG C, be incubated 7 hours, then air cooling, heat again in the middle part of last slip yoke to temperature be 170 DEG C, be incubated 2.5 hours, put into iron case cooling in heap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510994918.7A CN105479113A (en) | 2015-12-28 | 2015-12-28 | Preparation method of vehicle front bumper bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510994918.7A CN105479113A (en) | 2015-12-28 | 2015-12-28 | Preparation method of vehicle front bumper bar |
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| CN105479113A true CN105479113A (en) | 2016-04-13 |
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| CN201510994918.7A Pending CN105479113A (en) | 2015-12-28 | 2015-12-28 | Preparation method of vehicle front bumper bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086725A (en) * | 2016-08-15 | 2016-11-09 | 合肥万向钱潮汽车零部件有限公司 | A kind of vehicle sliding moving fork material prescription |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785550A (en) * | 2005-11-08 | 2006-06-14 | 内蒙古第一机械制造（集团）有限公司 | Forging method of soliding fork |
| CN102886643A (en) * | 2012-09-11 | 2013-01-23 | 昌利锻造有限公司 | Method for manufacturing sliding fork for automobile |
| CN103846627A (en) * | 2014-02-11 | 2014-06-11 | 马鞍山市恒毅机械制造有限公司 | Manufacturing method for sliding fork for automobile |
| CN104120368A (en) * | 2014-06-26 | 2014-10-29 | 宝钢不锈钢有限公司 | High-strength austenitic stainless steel for automobile frames and manufacturing method thereof |
-
2015
- 2015-12-28 CN CN201510994918.7A patent/CN105479113A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785550A (en) * | 2005-11-08 | 2006-06-14 | 内蒙古第一机械制造（集团）有限公司 | Forging method of soliding fork |
| CN102886643A (en) * | 2012-09-11 | 2013-01-23 | 昌利锻造有限公司 | Method for manufacturing sliding fork for automobile |
| CN103846627A (en) * | 2014-02-11 | 2014-06-11 | 马鞍山市恒毅机械制造有限公司 | Manufacturing method for sliding fork for automobile |
| CN104120368A (en) * | 2014-06-26 | 2014-10-29 | 宝钢不锈钢有限公司 | High-strength austenitic stainless steel for automobile frames and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086725A (en) * | 2016-08-15 | 2016-11-09 | 合肥万向钱潮汽车零部件有限公司 | A kind of vehicle sliding moving fork material prescription |
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Application publication date: 20160413 |