CN108994738A - Double ball blast surface strengthening technologies - Google Patents
Double ball blast surface strengthening technologies Download PDFInfo
- Publication number
- CN108994738A CN108994738A CN201810922269.3A CN201810922269A CN108994738A CN 108994738 A CN108994738 A CN 108994738A CN 201810922269 A CN201810922269 A CN 201810922269A CN 108994738 A CN108994738 A CN 108994738A
- Authority
- CN
- China
- Prior art keywords
- ball blast
- ball
- surface strengthening
- double
- shot
- 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
- 238000005516 engineering process Methods 0.000 title claims abstract description 21
- 238000005728 strengthening Methods 0.000 title claims abstract description 13
- 238000005498 polishing Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000005480 shot peening Methods 0.000 abstract description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
The present invention relates to a kind of manufacture crafts of leaf spring, and in particular to a kind of double ball blast surface strengthening technologies.Spring is carried out ball blast using double ball blast technologies, first progress rough polishing ball by double ball blast surface strengthening technologies, then carries out fine polishing ball, and the shot diameter of rough polishing ball is 1.2-1.5mm, and the shot diameter of fine polishing ball is 0.8-1.0mm.The present invention had not only been able to satisfy the requirement of ball blast intensity, but also can reach the requirement of shot-peening coverage rate, the leaf spring surfacing obtained using the technology, rust resistance enhancing.
Description
Technical field
The present invention relates to a kind of manufacture crafts of leaf spring, and in particular to a kind of double ball blast surface strengthening technologies.
Background technique
Ball blast technology, which refers to, gets to workpiece surface by shot-blasting machine shot, and workpiece surface is made to generate surface peening.Currently,
The country mostly uses a kind of shot blasting method for the ball blast of leaf spring.
The condition that workpiece surface reaches invigoration effect needs is:
A, there is enough intensity；
B, there are enough ball blast coverage rates.
Currently, existing ball blast technology has the following deficiencies:
(1) if reaching enough ball blast intensity, conventional method is exactly using the shot being relatively large in diameter, still, due to passing
It is certain for sending with revolving speed, workpiece pass by ball blast area speed be exactly it is constant, therefore, shot diameter is bigger, cause shot with
The area of workpiece contact will be smaller, and ball blast coverage rate does not reach requirement.
(2) if reaching the requirement of shot-peening coverage rate, using the small shot of diameter, and it will lead to ball blast intensity and be unable to reach
It is required that.
Summary of the invention
In view of the deficiencies of the prior art, it the object of the present invention is to provide a kind of double ball blast surface strengthening technologies, was both able to satisfy
The requirement of ball blast intensity, and the requirement of shot-peening coverage rate can be reached, the leaf spring surfacing obtained using the technology, corrosion resistant energy
Power enhancing.
Spring is carried out ball blast using double ball blast technologies, carried out first by double ball blast surface strengthening technologies of the present invention
Then rough polishing ball carries out fine polishing ball, the shot diameter of rough polishing ball is 1.2-1.5mm, and the shot diameter of fine polishing ball is 0.8-
1.0mm。
Wherein:
The spring is automobile parabolic leaf spring.
The ball blast intensity of the rough polishing ball is 0.25C.
The ball blast intensity of the fine polishing ball is 0.2C.
Preferably, the shot diameter of the rough polishing ball is 1.5mm.
Preferably, the shot diameter of the fine polishing ball is 0.8mm.
Compared with prior art, the invention has the following advantages:
1, surface quality: leaf spring surface more smooth reduces stress and concentrates, and reduces tired source.
2, stress is promoted: reed stress is 500MPa after a ball blast, and double ball blast reed stress 600MPa, compression mentions
It rises, fatigue life is promoted.
3, rust resistance: one time ball blast reed pitting is excessive, and reed corrosion is caused to accelerate；Double ball blast reed pittings are micro-
It is small, extend the corrosion time, the enhancing of resistant to rust ability.
4, since common ball blast can not be sprayed onto reed side, tired source often is generated in reed side, so that reed
It is broken, secondary ball blast technique, the residual stress of reed side can be promoted, promote ball blast coverage rate, reduce the production in tired source
It is raw.
Detailed description of the invention
Fig. 1 is that 10 times of figures are amplified on the surface of test specimen A of the present invention；
Fig. 2 is that 10 times of figures are amplified on the surface after test specimen B ball blast of the present invention；
Fig. 3 is that 10 times of figures are amplified on the surface after test specimen C ball blast of the present invention；
Fig. 4 is the salt spray test figure of test specimen B of the present invention；
Fig. 5 is the salt spray test figure of test specimen C of the present invention；
Fig. 6 is surface of test piece residual stress and stressor layers depth relationship figure；
Fig. 7 is bis- ball blast surface residual stress distribution maps of test specimen C.
Specific embodiment
Below with reference to embodiment, the present invention will be further described.
All raw materials used in embodiment are commercially available unless otherwise specified.
Automobile parabolic leaf spring 3 of same batch production are taken, are tested respectively.
1) test specimen A not ball blast is comparative example 1.
Test specimen B only carries out a ball blast, is comparative example 2.
Test specimen C uses double ball blast technologies of the present invention, is embodiment 1.
Test result is shown in Table 1.
1 test result of table
2) respectively by test specimen A, test specimen B, test specimen C after ball blast carry out the fatigue test of (900MPa) under equal conditions, knot
Fruit is as follows:
A:46585 fracture；
B:127157 fracture；
C:200793 fracture；
3) salt spray test is carried out to test specimen B, the test specimen C after ball blast respectively, as a result following (salt spray test condition is to require
In the case of shotblasting, therefore only comparison B test specimen and C test specimen).
B test specimen: unilateral sprawling 2.1mm (unqualified) after 240h；
C test specimen: unilateral sprawling 0.3mm after 480h (resistant to rust ability is strong).
Conclusion: the reed resistant to rust ability of double ball blast techniques will be much higher than single ball blast reed.
4) residual stress compares
It can be concluded that by residual stress measurement result under the conditions of three kinds of leaf spring sample difference shot-peenings
1, be in lower compression or tensile stress state without shot-peening sample surfaces, in matrix residual stress close to zero,
Maximum residual stress is within 150 μm of subsurface.
2, a shot-peening rear surface residual-stress value is -500MPa or so.
3, secondary bead blasted surfaces residual stress is higher than a shot-peening, and maximum crushing stress also will increase after secondary bead.
Claims (6)
1. a kind of double ball blast surface strengthening technologies, it is characterised in that: spring is carried out ball blast using double ball blast technologies, is carried out first
Then rough polishing ball carries out fine polishing ball, the shot diameter of rough polishing ball is 1.2-1.5mm, and the shot diameter of fine polishing ball is 0.8-
1.0mm。
2. double ball blast surface strengthening technologies according to claim 1, it is characterised in that: the spring is automobile parabolic steel
Flat spring.
3. double ball blast surface strengthening technologies according to claim 1, it is characterised in that: the ball blast intensity of the rough polishing ball
For 0.25C.
4. double ball blast surface strengthening technologies according to claim 1, it is characterised in that: the ball blast intensity of the fine polishing ball
For 0.2C.
5. double ball blast surface strengthening technologies according to claim 1, it is characterised in that: the shot diameter of the rough polishing ball
For 1.5mm.
6. double ball blast surface strengthening technologies according to claim 1, it is characterised in that: the shot diameter of the fine polishing ball
For 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810922269.3A CN108994738A (en) | 2018-08-14 | 2018-08-14 | Double ball blast surface strengthening technologies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810922269.3A CN108994738A (en) | 2018-08-14 | 2018-08-14 | Double ball blast surface strengthening technologies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108994738A true CN108994738A (en) | 2018-12-14 |
Family
ID=64596050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810922269.3A Pending CN108994738A (en) | 2018-08-14 | 2018-08-14 | Double ball blast surface strengthening technologies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108994738A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756552A (en) * | 2020-12-31 | 2021-05-07 | 江苏人民机具有限公司 | Manufacturing process of crawler plate of crawler crane |
| CN113322468A (en) * | 2021-05-25 | 2021-08-31 | 合肥学院 | Surface strengthening method for improving wear resistance of titanium-zirconium-based alloy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501009A (en) * | 2011-10-27 | 2012-06-20 | 杭州富春弹簧有限公司 | Processing technology of arc-shaped spring |
| CN104400348A (en) * | 2014-11-03 | 2015-03-11 | 常宁市福宏弹簧有限公司 | Turbocharging executing device spring processing process |
| CN105252418A (en) * | 2015-11-09 | 2016-01-20 | 山东雷帕得汽车技术股份有限公司 | Automobile plate spring shot blasting apparatus and shot-blasting process |
| CN107984308A (en) * | 2018-01-17 | 2018-05-04 | 盐城盛鼎机电工业有限公司 | A kind of safe abrasive machine |
-
2018
- 2018-08-14 CN CN201810922269.3A patent/CN108994738A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501009A (en) * | 2011-10-27 | 2012-06-20 | 杭州富春弹簧有限公司 | Processing technology of arc-shaped spring |
| CN104400348A (en) * | 2014-11-03 | 2015-03-11 | 常宁市福宏弹簧有限公司 | Turbocharging executing device spring processing process |
| CN105252418A (en) * | 2015-11-09 | 2016-01-20 | 山东雷帕得汽车技术股份有限公司 | Automobile plate spring shot blasting apparatus and shot-blasting process |
| CN105252418B (en) * | 2015-11-09 | 2017-12-01 | 山东雷帕得汽车技术股份有限公司 | A kind of leaf springs of car shot-blast apparatus and its ball blast processing technology |
| CN107984308A (en) * | 2018-01-17 | 2018-05-04 | 盐城盛鼎机电工业有限公司 | A kind of safe abrasive machine |
Non-Patent Citations (4)
| Title |
|---|
| 张炜等: "国外某重型车少片变截面钢板弹簧材料和制造工艺的研究 ", 《汽车工艺与材料》 * |
| 张炜等: "国外某重型车少片变截面钢板弹簧材料和制造工艺的研究", 《汽车工艺与材料》 * |
| 罗辉等主编: "《机械弹簧制造技术》", 30 September 1987 * |
| 迟道坤等: "变截面板簧喷丸新工艺的研究", 《金属热处理》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756552A (en) * | 2020-12-31 | 2021-05-07 | 江苏人民机具有限公司 | Manufacturing process of crawler plate of crawler crane |
| CN113322468A (en) * | 2021-05-25 | 2021-08-31 | 合肥学院 | Surface strengthening method for improving wear resistance of titanium-zirconium-based alloy |
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20181214 |