CN101514419B - New material for changing processed broken chip - Google Patents
New material for changing processed broken chip Download PDFInfo
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- CN101514419B CN101514419B CN2009100466674A CN200910046667A CN101514419B CN 101514419 B CN101514419 B CN 101514419B CN 2009100466674 A CN2009100466674 A CN 2009100466674A CN 200910046667 A CN200910046667 A CN 200910046667A CN 101514419 B CN101514419 B CN 101514419B
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- broken chip
- minimum
- chip
- processed broken
- new material
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to a new material for changing processed broken chip which comprises the chemical composition with the weight percentage: 6.5-7.5% of SI, 0.45-0.6% of Fe, 0.7-1.0% of Mg, Mn being more than half of Fe, 0.05% of Cu Max, 0.07% of Zn Max, 0.08-0.25% of Ti and the rest of Al. The chemical composition of the material is adjusted, so that the elongation and hardness value of cast parts are changed after heat treatment is carried out on the cast parts, thus achieving the effect of changing the difficulty of processing broken chip.
Description
Technical field
The present invention relates to the novel material of cast aluminium alloy AlSi7Mg0.9, especially a kind of material that changes processed broken chip is primarily aimed at the complex-shaped foundry goods of product cavity and changes the processed broken chip effect.
Background technology
Become with complicated, diversified for the core cavity shaped design of automobile braking master cylinder type, and process velocity becomes with at a high speed, to add the cutter that uses man-hour, processing rotating speed especially casting material itself require high.
Prior art uses conventional A356.0 (AlSi7Mg) to produce in development, exploitation BOSCH master cylinder foundry goods process, in the course of processing, uses the turning Compositions of metal-working machines to process, and cutter is a diamond, and rotating speed is 4500 commentaries on classics/MIN.In process finishing,, do not reach requirement because chip breaking problem inner chamber scratches seriously.
Summary of the invention
The object of the present invention is to provide a kind of material that changes processed broken chip, for overcoming the chip breaking problem of the foundry goods course of processing, chemical ingredients to material is adjusted, and unit elongation and hardness numerical value after the change heat treating castings reach the effect that changes the processed broken chip difficulty.
The chip breaking difficult problem appears in the smear metal course of processing, and major cause is as follows:
1, the unit elongation of foundry goods is too high.
2, the hardness of foundry goods is lower.
For achieving the above object, concrete scheme of the present invention is:
A kind of material that changes processed broken chip is characterized in that it is made up of following chemical ingredients by weight percentage:
Si 6.5-7.5％
Fe 0.45-0.6％
Mg 0.7-1.0％
Mn is greater than half of Fe
Cu Max?0.05％
Zn Max?0.07％
Ti 0.08-0.25％
The Al surplus.
The material of described change processed broken chip is characterized in that foundry goods that above-mentioned materials forms in T6 thermal treatment, and thermal treatment process is: 538 ℃ ± 5 ℃ of quenching temperatures, and soaking time 10H ± 0.5h, 60 ℃-100 ℃ of quenching water temperatures, the longest transfer time of 30S quenches; 155 ℃ ± 5 ℃ of aging temps, soaking time 10H ± 0.5h, mechanical property has obtained great change, and tensile strength is increased to 3 10MPa minimums by the 290MPa minimum, yield strength increases the minimum to 240MPa by the 200MPa minimum, and unit elongation is 1% minimum by 4% minimum change; Hardness is the 110HB minimum from minimum increase of 100HB.
Solution is analyzed: the main effect of chemical ingredients Mg is to form Mg with composition Si
2The Si phase is dissolved in the α matrix during quench treatment.Timeliness is separated out, and crystal lattice is distorted, and reinforced alloys improves hardness; When the Fe content in the alloy is higher, can form β (Al
9FeMg
3Si
6) phase, mechanical property is reduced, particularly elongation after fracture reduces; For avoiding the undue reduction of mechanical property, composition Mn need be adjusted to over half greater than the Fe actual content to slacken the influence of Fe.
Through a series of experiment, determined the chemical ingredients of table 2, original Mg content range (weight percent) is brought up to 0.7-1.0% (weight percent) at 0.45-0.7% (weight percent); Fe content is for to be increased to 0.45-0.6% (weight percent) less than 0.19% (weight percent); Mn content is changed into half that surpasses actual Fe content less than 0.1%.By this change, foundry goods is in T6 (quenching+timeliness) thermal treatment, and thermal treatment process is: 538 ℃ ± 5 ℃ of quenching temperatures, and soaking time 10h ± 0.5h, 60 ℃-100 ℃ of quenching water temperatures, the longest transfer time of 30S quenches; 155 ℃ ± 5 ℃ of aging temps, soaking time 10h ± 0.5h, mechanical property has obtained great change, and tensile strength is increased to the 310MPa minimum by the 290MPa minimum, yield strength increases the minimum to 24MPa by the 200MPa minimum, and unit elongation is 1% minimum by 4% minimum change; Hardness is the 110HB minimum from minimum increase of 100HB.
Table 1: chemical ingredients is formed (by weight percentage) and performance before the change
Table 2: the present invention newly develops chemical ingredients and forms (by weight percentage) and performance
Embodiment:
Embodiment 1
Si 7.0899％
Fe 0.4709％
Mg 0.9586％
Mn 0.2983％
Cu 0.0145％
Zn 0.0084％
Ti 0.0936％
The Al surplus.
| Performance | Tensile strength | Yield strength | Unit elongation | Hardness |
| 319.08MPa | 289.55MPa | 2.48％ | 114HB |
Embodiment 2
Si 7.1405％
Fe 0.5926％
Mg 0.9232％
Mn 0.3734％
Cu 0.0146％
Zn 0.0092％
Ti 0.0914％
The Al surplus.
| Performance | Tensile strength | Yield strength | Unit elongation | Hardness |
| 330.36MPa | 300.23MPa | 2.96％ | 117HB |
Embodiment 3
Si 6.5％
Fe 0.45％
Mg 0.7％
Mn 0.3％
Cu 0.05％
Zn 0.07％
Ti 0.08％
The Al surplus.
| Performance | Tensile strength | Yield strength | Unit elongation | Hardness |
| 319.38MPa | 292.45MPa | 2.58％ | 114HB |
Embodiment 4
Si 7.5％
Fe 0.6％
Mg 1.0％
Mn 0.4％
Cu 0.05％
Zn 0.07％
Ti 0.25％
The Al surplus.
| Performance | Tensile strength | Yield strength | Unit elongation | Hardness |
| 327.36MPa | 296.26MPa | 2.89％ | 116HB |
The present invention is being used in after BOSCH Part No. 0204227439 master cylinder hands over sample to produce 240, and it is quite good that the client processes feedback, not have the problem of the similar in the past chip breaking difficulty of appearance fully; And BOSCH intends new design in future master cylinder is used the material of this department development.
The above for the actual example of the present invention in we produce, is not to be used for limiting practical range of the present invention only.The all equivalences of doing according to the content of the present patent application claim of i.e. this invention change and modify, and all should be technology category of the present invention.
Claims (1)
1. material that changes processed broken chip is characterized in that it is made up of following chemical ingredients by weight percentage:
Si 7.1405％
Fe 0.5926％
Mg 0.9232％
Mn 0.3734％
Cu 0.0146％
Zn 0.0092％
Ti 0.0914％
The Al surplus;
The foundry goods that above-mentioned materials forms is in T6 thermal treatment, and thermal treatment process is: 538 ℃ ± 5 ℃ of quenching temperatures, and soaking time 10h ± 0.5h, 60 ℃-100 ℃ of quenching water temperatures, the longest transfer time of 30s quenches; 155 ℃ ± 5 ℃ of aging temps, soaking time 10h ± 0.5h, mechanical property has obtained great change, and tensile strength is 330.36MPa, and yield strength is 300.23MPa, and unit elongation is 2.96%; Hardness is 117HB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100466674A CN101514419B (en) | 2009-02-26 | 2009-02-26 | New material for changing processed broken chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100466674A CN101514419B (en) | 2009-02-26 | 2009-02-26 | New material for changing processed broken chip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101514419A CN101514419A (en) | 2009-08-26 |
| CN101514419B true CN101514419B (en) | 2010-12-29 |
Family
ID=41039041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100466674A Expired - Fee Related CN101514419B (en) | 2009-02-26 | 2009-02-26 | New material for changing processed broken chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101514419B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6969568B2 (en) * | 2016-10-31 | 2021-11-24 | 住友電気工業株式会社 | Aluminum alloy wire, aluminum alloy stranded wire, covered wire, and wire with terminal |
| CN107604215B (en) * | 2017-07-28 | 2019-12-06 | 宁波华源精特金属制品有限公司 | Static disc |
| CN110218885B (en) * | 2019-06-24 | 2020-08-14 | 广东工程职业技术学院 | High-strength and high-toughness extrusion casting aluminum alloy and preparation method thereof |
-
2009
- 2009-02-26 CN CN2009100466674A patent/CN101514419B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101514419A (en) | 2009-08-26 |
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Owner name: SHANGHAI KARLANG INDUSTRIAL CO., LTD. Free format text: FORMER OWNER: SHANGHAI RUIER INDUSTRIAL CO., LTD. Effective date: 20140210 |
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Free format text: CORRECT: ADDRESS; FROM: 201805 JIADING, SHANGHAI TO: 201806 JIADING, SHANGHAI |
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Effective date of registration: 20140210 Address after: Jiading District waiqingsong highway 201806 Shanghai City No. 496 Patentee after: Shanghai Karlang Industrial Co., Ltd. Address before: 201805 No. 625 South Miquan Road, block 1, Anting Dazhong Industrial Park, Shanghai, Jiading District Patentee before: Shanghai Ruier Industrial Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20101229 Termination date: 20180226 |