CN113406295A - Method for determining pipe welding heating standard for suspension stabilizer bar - Google Patents
Method for determining pipe welding heating standard for suspension stabilizer bar Download PDFInfo
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- CN113406295A CN113406295A CN202010180257.5A CN202010180257A CN113406295A CN 113406295 A CN113406295 A CN 113406295A CN 202010180257 A CN202010180257 A CN 202010180257A CN 113406295 A CN113406295 A CN 113406295A
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- welding
- determining
- stabilizer bar
- suspension stabilizer
- heating
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- 238000003466 welding Methods 0.000 title claims abstract description 52
- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000003381 stabilizer Substances 0.000 title claims abstract description 22
- 239000000725 suspension Substances 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 5
- 230000000052 comparative effect Effects 0.000 claims abstract description 4
- 238000012733 comparative method Methods 0.000 claims abstract description 4
- 230000004927 fusion Effects 0.000 claims abstract description 4
- 238000004364 calculation method Methods 0.000 claims description 6
- 102000003712 Complement factor B Human genes 0.000 claims description 3
- 108090000056 Complement factor B Proteins 0.000 claims description 3
- 230000001066 destructive effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000010791 quenching Methods 0.000 abstract 2
- 230000000171 quenching effect Effects 0.000 abstract 2
- 238000010998 test method Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/207—Welded or soldered joints; Solderability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides a method for determining a pipe welding heating standard for a suspension stabilizer bar, which comprises the following steps of S1: testing the welding power by a comparison method according to the characteristics of the material, and determining the welding heating temperature of the material; s2: forming and welding the cut by adopting an orthogonal test, and determining welding process parameters of the material; s3: the fatigue resistance of the finished product was investigated by comparative methods, including comparative metal flow line angles and fusion line widths. The material of the production position obtained by the test method has high strength and good toughness, and the strength of the welding seam is slightly higher than that of the parent metal; the high toughness can be still maintained after bearing large plastic deformation; the quenching degree is good, and products with uniform texture and good rigidity can be obtained through the quenching process.
Description
Technical Field
The invention mainly relates to the field of production and manufacturing of automobile parts, in particular to a method for determining a pipe welding heating standard for a suspension stabilizer bar.
Background
With the rapid development of the automobile manufacturing industry, people have more and more deep knowledge on the limitations of the domestic assembly production mode of imported parts which are prevalent in the initial development stage of the automobile industry, so that the localization of a large amount of raw materials is realized, and the method becomes an effective way for reducing the cost and enhancing the market competitiveness.
With the improvement of the performance of raw materials and the improvement of production process, a plurality of original accessories using steel plates and round steel as raw materials gradually start to adopt welded pipes as materials, so that the weight of the accessories can be obviously reduced, the vehicle weight is reduced, and the oil consumption is saved; on the other hand, the production process can be simplified, and the product performance can be improved. In foreign countries, a large amount of welded pipes have been adopted to replace round steel for producing stabilizer bars for suspensions of middle and high-end automobiles, so that a heating standard for determining the welded pipes for the automobile manufacturing industry is urgently needed, and the development of the automobile spare and accessory industry is promoted.
The published Chinese invention patent, application number CN201110286982.1, patent name: a stabilizer bar for suspension, the application date: 2011-09-23, the invention relates to a stabilizer bar for a suspension, and belongs to the field of automobiles. The stabilizer bar is connected with the two control arm assemblies to form a suspension bearing structure, the stabilizer bar comprises a cross arm and two longitudinal arms symmetrically arranged at two ends of the cross arm, a stabilizer bar bushing assembly is arranged on the cross arm and used for fixing the stabilizer bar on a vehicle body, the two longitudinal arms are arranged in a plane perpendicular to the cross arm, and the tail end of each longitudinal arm is fixedly connected with the corresponding control arm assembly. The embodiment of the invention only uses two parts of the stabilizer bar and the control arm assembly to realize the functions of the original four parts, namely the front stabilizer bar, the control arm assembly, the thrust rod and the connecting rod, simplifies the triangular arm structure, greatly lightens the weight of the front suspension assembly, simplifies the assembly process, directly reduces the design cost and the production cost, and increases the convenience for after-sale maintenance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for determining a pipe welding heating standard for a suspension stabilizer bar, which comprises the following process flows of:
s1: testing the welding power by a comparison method according to the characteristics of the material, and determining the welding heating temperature of the material;
s1.1: respectively heating and welding the materials at high temperature, medium temperature and low temperature;
s2: forming and welding the cut by adopting an orthogonal test, and determining welding process parameters of the material;
s2.1: the orthogonal test is carried out for a plurality of times according to factors in a test factor level table, wherein the factor level table comprises a plurality of factors, and the factor A: welding power, factor B: welding speed and factor C: the amount of extrusion;
s2.2: according to the fluctuation condition of the calculation result, namely comparing the magnitude of the range values R of different factors, determining the importance degree of the corresponding index on the comprehensive mechanical property of the welding line, and further finding out better welding process parameters;
s3: the fatigue resistance of the finished product was investigated by comparative methods, including comparative metal flow line angles and fusion line widths.
Preferably, in step S1, the material characteristics include hardenability and creep strength.
Preferably, in step S1.1, high temperature means that the heating state is a trace amount of spark spattering, medium temperature means that the heating state is a trace amount of spark spattering, and low temperature means that the heating state is a no-spark spattering.
Preferably, in step S1, the welding heating temperature of the final material is determined by destructive flattening test and microscopic metallographic detection method after welding.
Preferably, in step S2.1, nine trials are used.
Preferably, in step S2.2, the calculation results of the indexes are obtained by mathematically adding the test results of the corresponding positions of the levels in the test result table according to the factor a column in table 2 and respectively representing the sum of level 1, level 2 and level 3 by the symbols T1, T2 and T3.
Preferably, the material is 26MnB5 coiled sheet.
The invention has the beneficial effects that:
determining forming parameters and welding parameters by controlling a post-welding flattening test result and a metallographic test result; the welded pipe for the suspension stabilizer bar, which has the advantages of good bending processing technology, strong torsion resistance and good fatigue performance, is produced, and finally the product yield is realized.
Detailed Description
In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
As shown in tables 1-2, the present invention comprises the following process flow:
s1: testing the welding power by a comparison method according to the characteristics of the material, and determining the welding heating temperature of the material;
s1.1: respectively heating and welding the materials at high temperature, medium temperature and low temperature;
s2: forming and welding the cut by adopting an orthogonal test, and determining welding process parameters of the material;
s2.1: the orthogonal test is carried out for a plurality of times according to factors in a test factor level table, wherein the factor level table comprises a plurality of factors, and the factor A: welding power, factor B: welding speed and factor C: the amount of extrusion;
s2.2: according to the fluctuation condition of the calculation result, namely comparing the magnitude of the range values R of different factors, determining the importance degree of the corresponding index on the comprehensive mechanical property of the welding line, and further finding out better welding process parameters;
s3: the fatigue resistance of the finished product was investigated by comparative methods, including comparative metal flow line angles and fusion line widths.
In this embodiment, the characteristics of the material in step S1 preferably include hardenability and creep strength.
In this embodiment, preferably, in step S1.1, high temperature means that the heating state is a trace amount of spark spattering, medium temperature means that the heating state is a trace amount of spark spattering, and low temperature means that the heating state is a no-spark spattering state.
In this embodiment, in step S1, the welding heating temperature of the final material is determined by destructive crush test and microscopic metallographic detection after welding.
In this embodiment, preferably, nine tests are used in step S2.1.
Following the above procedure, table 1 below is a table of test factor levels:
TABLE 1 test factor level table
The following table 2 is an orthogonal test scheme:
TABLE 2 orthogonal test protocol
In this embodiment, step S2.2 is preferably to add the test results of the corresponding positions of the levels in the test result table according to the factor a column in table 2, and to use the sums of the levels T1, T2 and T3 to represent level 1, level 2 and level 3, respectively, to obtain the calculation results of the indexes.
In the present embodiment, the material is preferably 26MnB5 rolled sheet.
The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.
Claims (7)
1. A method for determining a pipe welding heating standard for a suspension stabilizer bar is characterized by comprising the following process flows of:
s1: testing the welding power by a comparison method according to the characteristics of the material, and determining the welding heating temperature of the material;
s1.1: respectively heating and welding the materials at high temperature, medium temperature and low temperature;
s2: forming and welding the cut by adopting an orthogonal test, and determining welding process parameters of the material;
s2.1: the orthogonal test is carried out for a plurality of times according to factors in a test factor level table, wherein the factor level table comprises a plurality of factors, and the factor A: welding power, factor B: welding speed and factor C: the amount of extrusion;
s2.2: according to the fluctuation condition of the calculation result, namely comparing the magnitude of the range values R of different factors, determining the importance degree of the corresponding index on the comprehensive mechanical property of the welding line, and further finding out better welding process parameters;
s3: the fatigue resistance of the finished product was investigated by comparative methods, including comparative metal flow line angles and fusion line widths.
2. The method of determining a pipe welding heating standard for a suspension stabilizer bar according to claim 1, characterized in that: in step S1, the material properties include hardenability and creep strength.
3. The method of determining a pipe welding heating standard for a suspension stabilizer bar according to claim 2, characterized in that: in step S1.1, high temperature means that the heating state is trace spark splash, medium temperature means that the heating state is trace spark splash, and low temperature means that the heating state is no spark splash.
4. The method of determining a pipe welding heating standard for a suspension stabilizer bar according to claim 3, characterized in that: in the step S1, the welding heating temperature of the final material is determined by a destructive crush test and a microscopic metallographic detection method after welding.
5. The method of determining a pipe welding heating standard for a suspension stabilizer bar according to claim 4, characterized in that: in step S2.1, nine tests are used.
6. The method of determining a pipe welding heating standard for a suspension stabilizer bar according to claim 5, characterized in that: in step S2.2, the calculation results of the indexes are obtained by mathematically adding the test results of the corresponding positions of the levels in the test result table according to the factor a column in table 2, and respectively representing the sum of level 1, level 2 and level 3 by using the sum of T1, T2 and T3.
7. The method of determining a pipe welding heating standard for a suspension stabilizer bar according to claim 6, characterized in that: the material adopts 26MnB5 coiled sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010180257.5A CN113406295A (en) | 2020-03-16 | 2020-03-16 | Method for determining pipe welding heating standard for suspension stabilizer bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010180257.5A CN113406295A (en) | 2020-03-16 | 2020-03-16 | Method for determining pipe welding heating standard for suspension stabilizer bar |
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| CN113406295A true CN113406295A (en) | 2021-09-17 |
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| CN202010180257.5A Pending CN113406295A (en) | 2020-03-16 | 2020-03-16 | Method for determining pipe welding heating standard for suspension stabilizer bar |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106564195A (en) * | 2016-11-07 | 2017-04-19 | 厦门理工学院 | Design method of plastic assembly piece rotary welding parameters |
| CN108334663A (en) * | 2018-01-05 | 2018-07-27 | 扬州东升汽车零部件股份有限公司 | A kind of hollow stabilizer rod of automobile multi-pass welding technique towards accurate Deformation control |
-
2020
- 2020-03-16 CN CN202010180257.5A patent/CN113406295A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106564195A (en) * | 2016-11-07 | 2017-04-19 | 厦门理工学院 | Design method of plastic assembly piece rotary welding parameters |
| CN108334663A (en) * | 2018-01-05 | 2018-07-27 | 扬州东升汽车零部件股份有限公司 | A kind of hollow stabilizer rod of automobile multi-pass welding technique towards accurate Deformation control |
Non-Patent Citations (3)
| Title |
|---|
| 李格妮: "钽材激光焊接工艺试验研究", 《山东工业技术》 * |
| 杨琨等: "铸造铝合金前副车架焊接工艺设计与优化", 《上海汽车》 * |
| 苏毅等: "铬钼钒耐热钢手工焊研究", 《清华大学学报》 * |
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Application publication date: 20210917 |
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