CN116043148A - High-aluminum QAl10-3-1.5 aluminum bronze heat treatment method - Google Patents
High-aluminum QAl10-3-1.5 aluminum bronze heat treatment method Download PDFInfo
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 182
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 166
- 229910000906 Bronze Inorganic materials 0.000 title claims abstract description 157
- 239000010974 bronze Substances 0.000 title claims abstract description 157
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 title claims abstract description 157
- 238000010438 heat treatment Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000010791 quenching Methods 0.000 claims abstract description 51
- 230000000171 quenching effect Effects 0.000 claims abstract description 51
- 238000012546 transfer Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000004321 preservation Methods 0.000 claims description 38
- 239000012535 impurity Substances 0.000 claims description 28
- 230000000087 stabilizing effect Effects 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 24
- 238000005496 tempering Methods 0.000 claims description 23
- 238000001035 drying Methods 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 4
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000012795 verification Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 10
- 230000002411 adverse Effects 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- -1 copper-aluminum-iron-manganese Chemical compound 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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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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- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/032—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing oxygen-containing compounds
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Thermal Sciences (AREA)
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Abstract
The invention belongs to the field of copper alloy heat treatment processing, and particularly relates to a high-aluminum QAl10-3-1.5 aluminum bronze heat treatment method. The high aluminum QAl10-3-1.5 aluminum bronze heat treatment process is obtained by adopting an air furnace, adjusting heat treatment process parameters and controlling part transfer time during quenching so as to meet the use requirements of parts. Through exploration, test and continuous iteration, the verification process is stable and reliable, the operation is simple and convenient, the cost is controllable, and the heat treatment of the high-aluminum bronze workpieces can be rapidly, effectively and batchwise completed, so that the performance index of the high-aluminum bronze workpieces meets the design requirement. Meanwhile, the method is applied to the production process of various high-aluminum bronze workpieces, such as bushings and structural members, provides a new method for heat treatment of the high-aluminum bronze workpieces, and can be popularized to the industries of aerospace, ships and the like, which have the same performance index requirements and use the high-aluminum bronze to produce the workpieces.
Description
Technical Field
The invention belongs to the field of copper alloy heat treatment processing, and particularly relates to a high-aluminum QAl10-3-1.5 aluminum bronze heat treatment method.
Background
QAl10-3-1.5 is copper-aluminum-iron-manganese quaternary high strength complex aluminum bronze. Has higher strength, wear resistance and corrosion resistance, and can improve the hardness after quenching and tempering. Is commonly used for manufacturing wear-resistant parts such as shaft sleeves, bushings and the like.
According to the use requirement of the part processed by the aluminum bronze, the hardness after heat treatment is controlled to be HB 180-200, and the tensile strength sigma is controlled at the same time b The aluminum content is controlled to be 740-810 MPa, and the current heat treatment process is difficult to reach the requirements when the aluminum content is high (9.25-10%). The invention provides a high aluminum QAl10-3-1.5 aluminum bronze heat treatment process which uses an air furnace for quenching, water cooling, tempering and air cooling, wherein the hardness of the aluminum bronze after heat treatment can be controlled to HB 180-200 and sigma by changing heat treatment parameters and controlling the part transfer time during quenching b Controlled at 740 MPa-810 MPa. Meets the use requirement.
Disclosure of Invention
The invention aims to obtain a high aluminum QAl10-3-1.5 aluminum bronze heat treatment process by adopting an air furnace, adjusting heat treatment process parameters and controlling part transfer time during quenching so as to meet the use requirements of parts.
Technical proposal
A heat treatment method of high-aluminum QAl10-3-1.5 aluminum bronze comprises the following steps:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.25% -10%.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 800-840 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60-90 min.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be less than 10s.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And step 6, raising the temperature of the tempering air furnace to 500-540 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60-120 min.
And 7, after the heat preservation time is up, taking out the workpiece, and placing the workpiece in air for cooling.
Furthermore, the performance of the raw materials of the aluminum bronze workpiece in the step 1 should reach YS/T649 standard. The performance of the raw materials of the aluminum bronze workpiece meets the YS/T649 standard, and the influence of unqualified raw material supply on the hardness and the tensile strength after heat treatment can be eliminated.
Further, the step 2 is performed to remove oil, water and dirt, and impurities, preferably acetone. The surfaces of the aluminum bronze workpieces and the clamps used by the aluminum bronze workpieces contain dirt, so that the quality of the aluminum bronze workpieces after heat treatment can be adversely affected; acetone is a safe and efficient cleaning agent, and does not bring any influence to the aluminum bronze workpiece.
Further, in order to ensure that no dirt is present on the surface of the aluminum bronze work piece after the removal of the impurities, the work piece should be carried with clean gloves. So as to prevent stains such as greasy dirt on the glove from polluting the surface of the aluminum bronze workpiece after impurity removal, thereby affecting the heat treatment quality of the aluminum bronze workpiece.
Furthermore, the quenching transfer time of the aluminum bronze workpiece in the step 4 is preferably 7-10 s. The transfer time is too short to operate; the transfer time is longer, and the metallographic structure of the quenching of the aluminum bronze workpiece is influenced, so that the heat treatment performance of the aluminum bronze workpiece is further influenced.
Further, the equipment grade of the quenching air furnace in the step 3 is III class or better than III class;
further, the equipment grade of the tempering air furnace in the step 6 is class II or better;
further, the method also comprises a step 8 of detecting the hardness and the tensile strength of the aluminum bronze workpiece after cooling, wherein the hardness is HB 180-200, and the tensile strength is sigma b 740 MPa-810 MPa, meets the use requirement and can be produced in batch.
Further, in the step 8, hardness and tensile strength are detected by using a brinell hardness tester and a universal tester respectively. The Brinell hardness tester and the universal testing machine are common detection equipment, and the detection is convenient and quick.
Technical effects
The QAl10-3-1.5 aluminum bronze heat treatment method for high aluminum has the advantages of stable and reliable verification process, simple and convenient operation and controllable cost through exploration, test and continuous iteration, and can rapidly, effectively and batchwise finish the heat treatment of the aluminum bronze workpiece with high aluminum so that the performance index of the aluminum bronze workpiece meets the design requirement. Meanwhile, the method is applied to the production process of various high-aluminum bronze workpieces, such as bushings and structural members, provides a new method for heat treatment of the high-aluminum bronze workpieces, and can be popularized to the industries of aerospace, ships and the like, which have the same performance index requirements and use the high-aluminum bronze to produce the workpieces.
Drawings
FIG. 1 is a schematic diagram of a thermal treatment process for aluminum bronze.
Detailed Description
The invention is further described below with reference to examples. The following description is of some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A heat treatment method of high-aluminum QAl10-3-1.5 aluminum bronze comprises the following steps:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.25% -10%.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 800-840 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60-90 min.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be less than 10s.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And step 6, raising the temperature of the tempering air furnace to 500-540 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60-120 min.
And 7, after the heat preservation time is up, taking out the workpiece, and placing the workpiece in air for cooling.
The performance of the raw materials of the aluminum bronze workpiece in the step 1 should reach YS/T649 standard. The performance of the raw materials of the aluminum bronze workpiece meets the YS/T649 standard, and the influence of unqualified raw material supply on the hardness and the tensile strength after heat treatment can be eliminated. The step 2 is used for removing oil, water, dirt and impurities, preferably acetone. The surfaces of the aluminum bronze workpieces and the clamps used by the aluminum bronze workpieces contain dirt, so that the quality of the aluminum bronze workpieces after heat treatment can be adversely affected; acetone is a safe and efficient cleaning agent, and does not bring any influence to the aluminum bronze workpiece. In order to ensure that no dirt exists on the surface of the aluminum bronze workpiece after impurity removal, clean gloves are worn for carrying. So as to prevent stains such as greasy dirt on the glove from polluting the surface of the aluminum bronze workpiece after impurity removal, thereby affecting the heat treatment quality of the aluminum bronze workpiece. The quenching transfer time of the aluminum bronze workpiece in the step 4 is preferably 7-10 s. The transfer time is too short to operate; the transfer time is longer, and the metallographic structure of the quenching of the aluminum bronze workpiece is influenced, so that the heat treatment performance of the aluminum bronze workpiece is further influenced. The equipment grade of the quenching air furnace in the step 3 is class III or better than class III; the equipment grade of the tempering air furnace in the step 6 is class II or better; returning bagStep 8, detecting the hardness and the tensile strength of the aluminum bronze workpiece after cooling, wherein the hardness is HB 180-200, and the tensile strength is sigma b 740 MPa-810 MPa, meets the use requirement and can be produced in batch. And 8, respectively selecting a Brinell hardness tester and a universal tester for detecting the hardness and the tensile strength of the steel sheet. The Brinell hardness tester and the universal testing machine are common detection equipment, and the detection is convenient and quick.
Selecting a workpiece with the Al content of 9.53%, the brand, state, specification and technical standard of QAl 10-3-1.5-R-phi 30-YS/T649 and the length of 75mm, and removing impurities such as water, oil stains and the like on the surface of the workpiece.
After impurity removal, the glove should be put on clean for carrying.
And (3) selecting a III-type air furnace, heating to 800 ℃, charging the furnace after the temperature is stable, and preserving the heat for 70min.
And after the heat preservation time is up, taking out the workpiece, rapidly putting the workpiece into cold water for quenching, and transferring the workpiece to 8s.
After the workpiece is water-cooled, compressed air is used for drying the workpiece.
Selecting a type II air furnace, heating to 520 ℃, charging the furnace after the temperature is stable, and preserving the heat for 90min.
And after the heat preservation time is up, taking out the workpiece, and placing the workpiece in air for cooling.
The hardness and tensile strength were measured by a Brinell hardness tester and a universal tester, and the results were HB 189-195 and sigma b 752-758 MPa, respectively. The organization performance is stable, the use requirement is met, and the mass production application can be realized.
The high aluminum QAl10-3-1.5 aluminum bronze heat treatment process provided by the invention is explained below with reference to the accompanying drawings.
FIG. 1 is a schematic flow chart of the heat treatment process of the QAl10-3-1.5 aluminum bronze with high aluminum provided by the invention, and referring to FIG. 1, the heat treatment process of the QAl10-3-1.5 aluminum bronze with high aluminum provided by the invention has the following research process:
failure cases:
case 1:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.56 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 880 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60min.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 400 ℃, charging the furnace after the temperature is stable, and preserving the heat for 100min.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 213-216, which does not meet the requirements of HB 180-200.
Case 2:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.68 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 850 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60 minutes.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 450 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 90 minutes.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB210 and does not meet the requirements of HB 180-200 according to the detection of a Brinell hardness tester.
Case 3:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.46%.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 880 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60min.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 450 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 90 minutes.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 219-223 and does not meet the requirements of HB 180-200 through the detection of a Brinell hardness tester.
Case 4:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.68 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 880 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 70min.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 400 ℃, charging the furnace after the temperature is stable, and preserving the heat for 90 minutes.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB217 and does not meet the requirements of HB 180-200 according to the detection of a Brinell hardness tester.
Case 5:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.81 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 800 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60 minutes.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 470 ℃, charging the furnace after the temperature is stable, and preserving the heat for 80 minutes.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 217-220 and does not meet the requirements of HB 180-200 through the detection of a Brinell hardness tester.
Case 6:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.33%.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 820 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60min.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 470 ℃, charging the furnace after the temperature is stable, and preserving the heat for 80 minutes.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 224-229, which is not in accordance with the requirements of HB 180-200.
Case 7:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.53 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 760 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60min.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 450 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 90 minutes.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 211-217, which does not meet the requirements of HB 180-200.
Case 8:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.46%.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 750 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60 minutes.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 470 ℃, charging the furnace after the temperature is stable, and preserving the heat for 90 minutes.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 214 and does not meet the requirements of HB 180-200 through the detection of a Brinell hardness tester.
Case 9:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.56 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 760 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60min.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 350 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 105 minutes.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 207-211 and does not meet the requirements of HB 180-200 through the detection of a Brinell hardness tester.
Success cases:
case 10:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.53 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 800 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60 minutes.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 500 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 90min.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 191-197 and sigma detected by a Brinell hardness tester b 753-760 MPa, and accords with HB 180-200,σ b 740 MPa-810 MPa.
Case 11:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.53 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 800 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60 minutes.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 540 ℃, charging the furnace after the temperature is stable, and preserving the heat for 90min.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 183-185 sigma detected by a Brinell hardness tester b 745 MPa-749 MPa, and accords with HB 180-200 and sigma b 740 MPa-810 MPa.
Case 12:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.53 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 840 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60 minutes.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 500 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 90min.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 194-198 and sigma detected by a Brinell hardness tester b 753MPa to 781MPa, accords with HB180 to 200 and sigma b 740 MPa-810 MPa.
Case 13:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.68 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 840 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60 minutes.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 540 ℃, charging the furnace after the temperature is stable, and preserving the heat for 90min.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 181-184 and sigma detected by a Brinell hardness tester b 745MPa to 758MPa, accords with HB180 to 200 and sigma b 740 MPa-810 MPa.
Case 14:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.33%.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 800 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60 minutes.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 525 ℃, charging the furnace after the temperature is stable, and preserving the heat for 90min.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 185-189 sigma detected by a Brinell hardness tester b 746 MPa-755 MPa, accords with HB 180-200 and sigma b 740 MPa-810 MPa.
Case 15:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.31 percent.
And 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and the clamp used by the aluminum bronze workpiece.
And step 3, raising the temperature of the quenching air furnace to 840 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60 minutes.
And 4, taking out the aluminum bronze workpiece after the heat preservation time is up, putting the aluminum bronze workpiece into cold water for quenching, and controlling the workpiece transfer time to be within 10 seconds.
And 5, after the workpiece is water-cooled, drying the workpiece by compressed air.
And 6, raising the temperature of the tempering air furnace to 525 ℃, charging the furnace after the temperature is stable, and preserving the heat for 90min.
And 7, taking out the workpiece and placing the workpiece in air for cooling after the heat preservation time is up.
The hardness of the workpiece after heat treatment is HB 190-195 sigma detected by a Brinell hardness tester b 750 MPa-767 MPa, and accords with HB 180-200 and sigma b 740 MPa-810 MPa.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (9)
1. A high aluminum QAl10-3-1.5 aluminum bronze heat treatment method, characterized by comprising the following steps:
step 1, selecting a QAl10-3-1.5 aluminum bronze workpiece with the Al content of 9.25% -10%;
step 2, before entering the furnace, cleaning oil, water, dirt and impurities from the aluminum bronze workpiece and a clamp used by the aluminum bronze workpiece;
step 3, raising the temperature of the quenching air furnace to 800-840 ℃, charging the quenching air furnace after stabilizing the temperature, and preserving the heat for 60-90 min;
step 4, after the heat preservation time is up, taking out the aluminum bronze workpiece, putting the aluminum bronze workpiece into cold water for quenching, wherein the workpiece transfer control time is less than 10s;
step 5, after the workpiece is water-cooled, drying the workpiece by compressed air;
step 6, raising the temperature of the tempering air furnace to 500-540 ℃, charging the furnace after stabilizing the temperature, and preserving the heat for 60-120 min;
and 7, after the heat preservation time is up, taking out the workpiece, and placing the workpiece in air for cooling.
2. The heat treatment method of high-aluminum QAl10-3-1.5 aluminum bronze according to claim 1, wherein the performance of the raw materials of the aluminum bronze workpiece in the step 1 is up to YS/T649 standard; the performance of the raw materials of the aluminum bronze workpiece meets YS/T649 standard.
3. The heat treatment method of high aluminum QAl10-3-1.5 aluminum bronze according to claim 1, wherein said step 2 is performed to remove oil, water and dirt, impurities, preferably acetone.
4. A heat treatment method for high aluminum QAl10-3-1.5 aluminum bronze according to claim 1, wherein after the removal of impurities, clean gloves are put on for carrying in order to ensure no dirt on the surface of the aluminum bronze work piece.
5. The heat treatment method of high-aluminum QAl10-3-1.5 aluminum bronze according to claim 1, wherein the quenching transfer time of the aluminum bronze workpiece in the step 4 is preferably 7-10 s.
6. The method for heat treatment of high aluminum QAl10-3-1.5 aluminum bronze according to claim 1, wherein said step 3 quenching air furnace is rated class III or better.
7. A heat treatment method for high aluminum QAl10-3-1.5 aluminum bronze according to claim 1, wherein the equipment grade of the tempering air furnace in step 6 is class II or better.
8. The heat treatment method of high aluminum QAl10-3-1.5 aluminum bronze according to claim 1, further comprising step 8, after cooling, detecting hardness and tensile strength of the aluminum bronze workpiece, wherein the hardness is HB 180-200, and the tensile strength is sigma b 740MPa～810MPa。
9. The method for heat treating high aluminum QAl10-3-1.5 aluminum bronze according to claim 7, wherein the hardness and tensile strength measured in step 8 are respectively measured by a Brinell hardness tester and a universal tester.
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