CN110396587B - Heat treatment tool for copper-steel double-alloy blank - Google Patents
Heat treatment tool for copper-steel double-alloy blank Download PDFInfo
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- CN110396587B CN110396587B CN201910825569.4A CN201910825569A CN110396587B CN 110396587 B CN110396587 B CN 110396587B CN 201910825569 A CN201910825569 A CN 201910825569A CN 110396587 B CN110396587 B CN 110396587B
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- heat treatment
- copper
- blank
- base
- blind hole
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Gasket Seals (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a heat treatment tool for a copper-steel double-alloy blank, which comprises a base (1), wherein a blind hole (2) is formed in the base (1), a heat insulation gasket (3) is arranged in the blind hole (2), and a fixing structure (4) is arranged on the base (1); the heat insulation gasket (3) is an asbestos pad; the thickness of the heat insulation gasket (3) is 3-8 mm; the fixing structure (4) is an internal thread arranged on the inner wall of the blind hole (2). The blank piece is subjected to heat treatment by adopting the method, so that the method has the advantage of high qualification rate, and the method has the advantages of simple processing, easy installation and repeated use.
Description
Technical Field
The invention belongs to the field of hydraulic pumps, and particularly relates to a heat treatment tool for a copper-steel double-alloy blank for a hydraulic pump.
Background
The copper-steel double alloy part refers to a part made of a copper-steel double alloy material, and the copper-steel double alloy material is a material formed by combining a thinner copper layer and a thicker steel layer. The copper-steel double-alloy part has wide application in a hydraulic pump (also called a hydraulic motor), is mainly applied to a friction pair part of the hydraulic pump, and has higher strength and better abrasion resistance and fatigue resistance. When the copper-steel double-alloy part is produced, a blank is processed by using the copper-steel double-alloy material, then the blank is directly subjected to heat treatment (quenching treatment and rapid cooling after heating) to improve the strength of a steel layer of the blank, and finally the blank is subjected to finish machining to obtain a finished product. When the blank is subjected to heat treatment, due to the fact that the difference of thermal expansion coefficients of the copper layer and the steel layer is large, the blank is rapidly cooled to enable the end face of the copper layer and the joint face between the copper layer and the steel layer to generate large tensile stress, cracking of the copper layer of the blank or separation of the copper layer and the steel layer may be caused, and the heat treatment yield of the blank is low and is only about 30%.
Therefore, the direct heat treatment of the blank has the disadvantage of low yield.
Disclosure of Invention
The invention aims to provide a heat treatment tool for a copper-steel double-alloy blank. The heat treatment of the existing blank has the advantage of high qualification rate, and the invention has the advantages of simple processing, easy installation and repeated use.
The technical scheme of the invention is as follows: the utility model provides a heat treatment frock of copper steel double alloy blank, includes the base, is equipped with the blind hole on the base, is equipped with thermal-insulated gasket in the blind hole, is equipped with fixed knot on the base and constructs.
In the heat treatment tool for the copper-steel double-alloy blank, the heat insulation gasket is an asbestos gasket.
In the heat treatment tool for the copper-steel double-alloy blank, the thickness of the heat insulation gasket is 3-8 mm.
In the heat treatment tool for the copper-steel double-alloy blank, the fixing structure is an internal thread arranged on the inner wall of the blind hole.
Compared with the prior art, the blank is installed in the invention for heat treatment, most of the steel layer of the blank is exposed outside the base, one part of the steel layer and all the copper layer are in the base, the cooling speed of the copper layer in the rapid cooling process of the blank during heat treatment is reduced through the base and the asbestos pad, so that the copper layer is still in a high-temperature state after the steel layer is cooled, and at the moment, the copper layer still has higher expansion coefficient and plasticity, the tensile stress between the copper layer and the steel layer can be reduced, the copper layer of the blank is prevented from cracking or being separated from the steel layer, and the qualified rate of the blank during heat treatment is improved. Tests show that the blank piece is arranged in the invention for heat treatment, the heat treatment qualification rate can reach more than 85 percent, compared with the blank piece directly subjected to heat treatment, the strength, the friction resistance and the fatigue resistance are basically kept unchanged, and the blank piece can meet the use requirements after being processed into a fitting. Moreover, the invention has simple structure, simple processing, easy installation and repeated use.
Therefore, the blank piece is subjected to heat treatment by the method, so that the method has the advantage of high qualification rate, and the method has the advantages of simple processing, easy installation and repeated use.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic illustration of the installation of the blank in the present invention.
The labels in the figures are: 1-base, 2-blind hole, 3-heat insulation gasket, 4-fixed structure, 5-copper layer and 6-steel layer.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example 1. A heat treatment tool for a copper-steel double-alloy blank comprises a base 1, wherein a blind hole 2 is formed in the base 1, a heat insulation gasket 3 is arranged in the blind hole 2, and a fixing structure 4 is arranged on the base 1, as shown in figure 1.
The heat insulation gasket 3 is an asbestos pad.
The thickness of the heat insulation gasket 3 is 3, 5 or 8mm, and the diameter of the heat insulation gasket 3 is close to the inner diameter of the blind hole 2.
The fixed structure 4 is an internal thread arranged on the inner wall of the blind hole 2.
The circumferential surface of the base 1 is provided with a pin shaft hole.
When the tool is used for heat treatment of blanks (copper layer material QSn6.5-0.1 and steel layer material 40CrNiMoA) of YZBXX-3005 type double-alloy rotors in hydraulic pumps, the outer threads of one end of the blanks with the copper layers are firstly screwed, the outer threads extend to the outer peripheral surface of the steel layers, then the pin shaft is taken out and inserted into the pin shaft hole, the base 1 is sleeved on the blanks, the inner threads and the outer threads are meshed, the base 1 is driven to rotate by the pin shaft, the base 1 is fixed on the blanks, and the installation of the blanks and the tool is completed. By utilizing the invention to carry out heat treatment on the double-alloy rotor, the qualification rate of the heat treatment can be improved from 30 percent to 85 percent. After the blank is subjected to heat treatment, the external threads on the surface can be removed in a subsequent finishing process.
When the tool is used for heat treatment of blanks (copper layer material ZQSn10-2-3 and steel layer material 30Cr3WVE) of YZBXX-2001 type double-alloy rotors in hydraulic pumps, the installation mode of the blanks is the same as that of the blank, and the qualification rate of the heat treatment can be improved from 35% to 87%.
Therefore, the blank piece is subjected to heat treatment by the method, so that the method has the advantage of high qualification rate, and the method has the advantages of simple processing, easy installation and repeated use.
Claims (3)
1. The utility model provides a heat treatment frock of copper steel superalloy blank which characterized in that: the heat insulation structure comprises a base (1), wherein a blind hole (2) is formed in the base (1), a heat insulation gasket (3) is arranged in the blind hole (2), and a fixing structure (4) is arranged on the base (1); the fixing structure (4) is an internal thread arranged on the inner wall of the blind hole (2).
2. The heat treatment tool for the copper-steel double-alloy blank according to claim 1, characterized in that: the heat insulation gasket (3) is an asbestos pad.
3. The heat treatment tool for the copper-steel double-alloy blank according to claim 2, characterized in that: the thickness of the heat insulation gasket (3) is 3-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825569.4A CN110396587B (en) | 2019-09-03 | 2019-09-03 | Heat treatment tool for copper-steel double-alloy blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825569.4A CN110396587B (en) | 2019-09-03 | 2019-09-03 | Heat treatment tool for copper-steel double-alloy blank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110396587A CN110396587A (en) | 2019-11-01 |
| CN110396587B true CN110396587B (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910825569.4A Active CN110396587B (en) | 2019-09-03 | 2019-09-03 | Heat treatment tool for copper-steel double-alloy blank |
Country Status (1)
| Country | Link |
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| CN (1) | CN110396587B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61285653A (en) * | 1985-06-12 | 1986-12-16 | Hitachi Maxell Ltd | Button cell |
| US4830683A (en) * | 1987-03-27 | 1989-05-16 | Mre Corporation | Apparatus for forming variable strength materials through rapid deformation and methods for use therein |
| CN100491580C (en) * | 2007-04-02 | 2009-05-27 | 西南铝业（集团）有限责任公司 | Multifunctional heating furnace |
| CN201201959Y (en) * | 2008-06-06 | 2009-03-04 | 辽宁标新久保田工业炉有限公司 | Stainless steel annealing protective hood with horizontal corrugation |
| CN106271033B (en) * | 2016-08-28 | 2019-01-08 | 中航力源液压股份有限公司 | A kind of diffusion welding method of tin bronze and steel welding construction |
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2019
- 2019-09-03 CN CN201910825569.4A patent/CN110396587B/en active Active
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| CN110396587A (en) | 2019-11-01 |
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