CN112853240A - Surface strengthening and quenching device for copper alloy casting - Google Patents
Surface strengthening and quenching device for copper alloy casting Download PDFInfo
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- CN112853240A CN112853240A CN202110027860.4A CN202110027860A CN112853240A CN 112853240 A CN112853240 A CN 112853240A CN 202110027860 A CN202110027860 A CN 202110027860A CN 112853240 A CN112853240 A CN 112853240A
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- copper alloy
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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
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
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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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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Thermal Sciences (AREA)
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- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a surface strengthening quenching device for copper alloy castings, which comprises a quenching device main body, wherein a guide roller is arranged in the quenching device main body, the guide roller is arranged on a guide roller frame, the copper alloy castings are placed on the guide roller, the guide roller frame is welded on the outer wall of the quenching device main body, a water spray gun is arranged on the inner wall of the quenching device main body, a metal debris cleaning device is arranged at the lower end in the quenching device main body, an auxiliary clamping device and an auxiliary pressing device are arranged on the guide roller, the water spray gun is arranged in the quenching device main body and is circularly arrayed in the quenching device main body, so that the copper alloy castings are more uniform in the quenching process, and meanwhile, the adopted quenching device main body is cylindrical, so that the influence of heat radiation on the safety and health of operators can be effectively relieved.
Description
Technical Field
The invention relates to the technical field of quenching devices, in particular to a surface strengthening quenching device for a copper alloy casting.
Background
In the production of castings, in order to strengthen the surface of the casting, it is often necessary to subject the surface of the casting to a quenching treatment.
Quenching is a heat treatment process of metals in which a metal workpiece is heated to a suitable temperature and held for a period of time, and then immersed in a quenching medium for rapid cooling. Common quenching media are brine, water, mineral oil, air, and the like. The quenching can improve the hardness and the wear resistance of the metal workpiece, so the quenching die is widely applied to various tools, dies, measuring tools and parts requiring surface wear resistance.
But the surface quenching of present copper alloy foundry goods is handled, just places the foundry goods in simple devices such as water passing groove, and this makes can produce heat radiation to operating worker in the quenching process, influences their health and safety, still can produce oxidation metal piece simultaneously at the in-process of quenching, long-time not clear up, can pile up, is difficult to clear away, damages equipment, and the in-process of the conveying of foundry goods still can damage equipment if take place the skew condition simultaneously, injures personnel.
Therefore, the invention provides a surface strengthening and quenching device for copper alloy castings, which is used for solving the problems.
Disclosure of Invention
The invention aims to provide a surface strengthening and quenching device for a copper alloy casting, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a surface strengthening quenching device for copper alloy castings comprises a quenching device main body, wherein guide rollers are installed inside the quenching device main body, the guide rollers are installed on a guide roller frame, the copper alloy castings are placed on the guide rollers, the guide rollers enable the copper alloy castings to be transmitted on the guide rollers, on one hand, the movement of the copper alloy castings is facilitated, on the other hand, the quenching process of the copper alloy castings is smooth and efficient, the guide roller frame is welded on the outer wall of the quenching device main body, a water spray gun is installed on the inner wall of the quenching device main body, a metal debris cleaning device is installed at the lower end inside the quenching device main body, and an auxiliary clamping device and an auxiliary pressing device are arranged on the;
garrulous cleaning device of metal comprises scraping the pole, the pull rod, the scraper, first gyro wheel and connecting rod, scrapes and installs the scraper below the pole, and the scraper is used for clearing up the metallic debris that strikes off guenching unit main part bottom inner wall, and the both ends of scraping the pole are welded perpendicularly and are connected with the connecting rod, and the perpendicular welding has first gyro wheel on the connecting rod, and first gyro wheel is installed in the track inslot that the guenching unit main part was seted up, scrapes the centre of pole and installs the pull rod perpendicularly, and the length of pull rod is greater than the length of guenchi.
Preferably, the auxiliary clamping device comprises a cylindrical barrel, a supporting column, a limiting column, a spring, an inserting rod, a mounting plate, a supporting block and a second roller, wherein the cylindrical barrel is vertically welded on the inner wall of the quenching device main body, the inserting rod is inserted in the cylindrical barrel, the mounting plate is vertically welded at the front end of the inserting rod, the supporting column is vertically welded on the cylindrical barrel, the spring is arranged between the supporting column and the mounting plate, two ends of the spring are fixed on the limiting column, the limiting column is vertically welded on the side walls of the supporting column and the mounting plate respectively, the supporting block is vertically welded on the other side wall of the mounting plate, the second roller is arranged in the supporting block, when the copper alloy casting is placed on the guide roller and is positioned between the two groups of second rollers, the copper alloy casting can extrude the second roller, so that the spring contracts, and meanwhile, the reaction force of the spring can enable the second roller, the copper alloy casting is placed to be deviated in the process of being transported by the guide roller and then collides with the inner wall of the quenching device main body, so that the equipment is damaged.
Preferably, the auxiliary pressing device consists of a supporting shaft, a rolling shaft, a mounting frame, a fixing block, a tension spring, a fixing rod, a limiting block, a U-shaped frame, a cylindrical pin and a vertical rod, the U-shaped frame is welded on the upper inner wall of the quenching device main body, the vertical rod is installed in the U-shaped frame and is movably connected with the U-shaped frame through the cylindrical pin, the mounting frame is vertically welded at the lower end of the vertical rod, the supporting shaft is installed in the mounting frame, the rolling shaft is installed on the supporting shaft, the fixing block is vertically welded on the side wall of the lower end of the vertical rod, the tension spring is fixed on the fixing block, the other end of the tension spring is fixed at the lower end of the fixing rod, the fixing rod is vertically welded on the upper inner wall of the quenching device main body, the limiting block is welded at one side of the U-shaped frame, the roller bearing can extrude the copper alloy foundry goods, and the copper alloy foundry goods also can make the montant slope simultaneously, and the extension spring is stretched, and the copper alloy foundry goods can be by the extruded tighter some of roller bearing like this for the removal of copper alloy foundry goods is more stable, and the deflector roll can not skid again.
Preferably, scrape pole and scraper and all be circular-arc, the radian keeps unanimous with guenching unit main part lower part for scrape pole and scraper and laminate guenching unit main part inner wall more, the oxidation metal piece clearance with the guenching unit main part is more convenient, prevents long-time accumulation, is difficult to the clearance.
Preferably, the length of track groove is the same with the length of guenching unit main part, makes things convenient for garrulous cleaning device of metal's installation and demolishs, also makes garrulous cleaning device of metal's first gyro wheel wherein remove simultaneously, can not take place the skew for exert oneself more easily when clearing up the metal piece.
Preferably, eight groups are no less than to the deflector roll, and seven groups are no less than to the water pistol, and every group water pistol has four, is circular array in the guenching unit main part, and every group water pistol is in between two sets of adjacent deflector rolls, just so makes the water pistol carry out the in-process that quenches to the copper alloy foundry goods spraying water, can not be kept off by the deflector roll.
Compared with the prior art, the invention has the beneficial effects that:
the water spray guns are arranged in the quenching device main body of the quenching device for strengthening the surface of the copper alloy casting, are circularly arrayed in the quenching device main body, so that the copper alloy casting is more uniform in the quenching process, and meanwhile, the adopted quenching device main body is cylindrical, so that the influence of heat radiation on the safety and health of operators can be effectively relieved;
the surface strengthening quenching device for the copper alloy castings provided by the invention is provided with the auxiliary clamping device and the auxiliary pressing device, so that the situation that the copper alloy castings are deviated and impact on the quenching device main body under the action of the auxiliary clamping device in the process of being conveyed on the guide roller is avoided, the copper alloy castings can be stably conveyed under the action of the auxiliary pressing device, and the phenomenon of slipping is avoided.
Drawings
FIG. 1 is a front view of a surface hardening quenching apparatus for copper alloy castings;
FIG. 2 is a perspective view of a surface hardening apparatus for copper alloy castings;
FIG. 3 is an enlarged view of detail at A;
fig. 4 is a perspective view of the auxiliary grip device and the auxiliary pressing device.
In the figure: the quenching device comprises a quenching device body 1, a guide roller frame 2, a guide roller 3, a supporting seat 4, a water spray gun 5, a scraping rod 6, a pull rod 7, a scraper 8, a track groove 9, a first roller 10, a connecting rod 11, a cylindrical barrel 12, a supporting column 13, a limiting column 14, a spring 15, an inserting rod 16, an installing plate 17, a supporting block 18, a second roller 19, a supporting shaft 20, a rolling shaft 21, an installing frame 22, a fixing block 23, a tension spring 24, a fixing rod 25, a limiting block 26, a U-shaped frame 27, a cylindrical pin 28, a vertical rod 29 and a copper alloy casting 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below. The embodiments of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without any inventive work, belong to the scope of protection of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: a surface strengthening quenching device for copper alloy castings comprises a quenching device main body 1, wherein guide rollers 3 are arranged inside the quenching device main body 1, the guide rollers 3 are arranged on a guide roller frame 2, the copper alloy castings 30 are placed on the guide rollers 3, the guide rollers 3 enable the copper alloy castings 30 to be transmitted on the guide rollers, on one hand, the movement of the copper alloy castings 30 is facilitated, on the other hand, the quenching process of the copper alloy castings 30 is smooth and efficient, the guide roller frame 2 is welded on the outer wall of the quenching device main body 1, a water spray gun 5 is arranged on the inner wall of the quenching device main body 1, a metal scrap cleaning device is arranged at the lower end inside the quenching device main body 1, and an auxiliary clamping device and an auxiliary pressing device are arranged on the guide;
garrulous cleaning device of metal is by scraping pole 6, pull rod 7, scraper 8, first gyro wheel 10 and connecting rod 11 are constituteed, scrape and install scraper 8 below the pole 6, scraper 8 is used for the clearance to strike off the metal piece of 1 bottom inner wall of guenching unit main part, the both ends of scraping pole 6 are welded perpendicularly and are connected connecting rod 11, perpendicular welding has first gyro wheel 10 on the connecting rod 11, first gyro wheel 10 is installed in the track groove 9 that guenching unit main part 1 was seted up, scrape the centre of pole 6 and install pull rod 7 perpendicularly, the length of pull rod 7 is greater than the length of guenching unit main part 1.
Further, the auxiliary clamping device comprises a cylindrical barrel 12, a supporting column 13, a limiting column 14, a spring 15, an inserting rod 16, a mounting plate 17, a supporting block 18 and second rollers 19, wherein the cylindrical barrel 12 is vertically welded on the inner wall of the quenching device main body 1, the inserting rod 16 is inserted in the cylindrical barrel 12, the mounting plate 17 is vertically welded at the front end of the inserting rod 16, the supporting column 13 is vertically welded on the cylindrical barrel 12, the spring 15 is arranged between the supporting column 13 and the mounting plate 17, two ends of the spring 15 are fixed on the limiting column 14, the limiting column 14 is respectively vertically welded on the side walls of the supporting column 13 and the mounting plate 17, the supporting block 18 is vertically welded on the other side wall of the mounting plate 17, the second rollers 19 are arranged in the supporting block 18, when the copper alloy casting 30 is placed on the guide roller 3 and is positioned between the two sets of second rollers 19, the copper alloy casting 30 can extrude the second rollers 19 to enable the, meanwhile, the reaction force of the spring 15 can make the second roller 19 and the copper alloy casting 30 fit tightly, and the copper alloy casting 30 is placed to deviate in the process of being transported by the guide roller 3 and impact the inner wall of the quenching device main body 1, so that the equipment is damaged.
Further, the auxiliary pressing device comprises a supporting shaft 20, a rolling shaft 21, an installation frame 22, a fixed block 23, a tension spring 24, a fixed rod 25, a limit block 26, a U-shaped frame 27, a cylindrical pin 28 and a vertical rod 29, wherein the U-shaped frame 27 is welded on the upper inner wall of the quenching device main body 1, the vertical rod 29 is installed in the U-shaped frame 27, the vertical rod 29 is movably connected with the U-shaped frame 27 through the cylindrical pin 28, the installation frame 22 is vertically welded at the lower end of the vertical rod 29, the supporting shaft 20 is installed in the installation frame 22, the rolling shaft 21 is installed on the supporting shaft 20, the fixed block 23 is vertically welded on the side wall of the lower end of the vertical rod 29, the tension spring 24 is fixed on the fixed block 23, the other end of the tension spring 24 is fixed at the lower end of the fixed rod 25, the fixed rod 25 is vertically welded on the upper inner, being in vertical state by the pulling of extension spring 24, when copper alloy casting 30 placed at deflector roll 3, and be in between two sets of second gyro wheels 19, roller 21 can extrude copper alloy casting 30, and copper alloy casting 30 also can make montant 29 slope simultaneously, and extension spring 24 is stretched, and copper alloy casting 30 can be extruded by roller 21 tighter like this for copper alloy casting 30's removal is more stable, and deflector roll 3 can not skid again.
Further, scrape pole 6 and scraper 8 and all be circular-arcly, the radian keeps unanimous with 1 lower part of gue unit main part for scrape 1 inner walls of pole 6 and the more laminating gue unit main part of scraper 8, it falls to make things convenient for the oxidation metal piece clearance in the gue unit main part 1 more, prevents long-time accumulation, is difficult to the clearance.
Further, the length of the track groove 9 is the same as that of the quenching device main body 1, so that the metal scrap cleaning device is convenient to install and remove, and meanwhile, the first roller 10 of the metal scrap cleaning device moves in the track groove without deviation, so that the metal scrap is easier to exert force when being cleaned.
Further, eight groups are no less than guide rollers 3, seven groups are no less than water spray guns 5, four water spray guns 5 are arranged in the quenching device main body 1 in a circular array mode, and each group of water spray guns 5 are located between two adjacent groups of guide rollers 2, so that the water spray guns 5 cannot be blocked by the guide rollers 3 in the process of spraying water to quench the copper alloy casting 30.
The working principle is as follows: firstly, the formed copper alloy casting 30 is placed on the guide roller 3 and is positioned between two groups of second rollers 19, the copper alloy casting 30 can extrude the second rollers 19, so that the springs 15 contract, meanwhile, the reaction force of the springs 15 can enable the second rollers 19 and the copper alloy casting 30 to be attached more tightly, the copper alloy casting 30 is placed and deviated in the process of being transported by the guide rollers 3 and collides with the inner wall of the quenching device main body 1, so that the equipment is damaged, meanwhile, the copper alloy casting can be extruded by the rollers, meanwhile, the vertical rods can be inclined by the copper alloy casting, the tension spring is stretched, so that the copper alloy casting can be extruded more tightly by the rollers, the movement of the copper alloy casting is more stable, the guide roller cannot slip, in the process of conveying the copper alloy casting 30, the water spray gun 5 can spray water to quench the copper alloy casting 30, and some oxidized metal fragments can fall on the bottom surface inside the quenching device main body 1 in the quenching process of the copper alloy casting 30, after the copper alloy casting 30 is quenched, the pull rod 7 can be pulled, so that the scraper 8 is driven by the scraper 6, and oxidized metal chips on the bottom surface inside the quenching device main body 1 are cleaned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a copper alloy foundry goods surface strengthening guenching unit, includes guenching unit main part (1), its characterized in that: the quenching device comprises a quenching device body (1), wherein a guide roller (3) is arranged in the quenching device body (1), the guide roller (3) is arranged on a guide roller frame (2), a copper alloy casting (30) is placed on the guide roller (3), the guide roller frame (2) is welded on the outer wall of the quenching device body (1), a water spray gun (5) is arranged on the inner wall of the quenching device body (1), a metal scrap cleaning device is arranged at the lower end of the interior of the quenching device body (1), and an auxiliary clamping device and an auxiliary pressing device are arranged on the guide roller (3);
garrulous cleaning device of metal is by scraping pole (6), pull rod (7), scraper (8), first gyro wheel (10) and connecting rod (11) are constituteed, scrape below pole (6) and install scraper (8), scraper (8) are used for the clearance to strike off the metal piece of guenching unit main part (1) bottom inner wall, the both ends vertical welding who scrapes pole (6) has connecting rod (11), vertical welding has first gyro wheel (10) on connecting rod (11), install in track groove (9) that guenching unit main part (1) was seted up first gyro wheel (10), pull rod (7) are installed perpendicularly to the centre of scraping pole (6), the length of pull rod (7) is greater than the length of guenching unit main part (1).
2. The surface hardening quenching apparatus for copper alloy castings according to claim 1, characterized in that: the auxiliary clamping device consists of a cylindrical barrel (12), a supporting column (13), a limiting column (14), a spring (15), an inserted bar (16), a mounting plate (17), a supporting block (18) and a second roller (19), the cylinder (12) is welded perpendicularly on the inner wall of the quenching device main body (1), the inserted link (16) is inserted in the cylinder (12), the mounting plate (17) is perpendicularly welded at the front end of the inserted link (16), the supporting column (13) is perpendicularly welded on the cylinder (12), the spring (15) is arranged between the supporting column (13) and the mounting plate (17), the two ends of the spring (15) are fixed on the limiting column (14), the limiting column (14) is perpendicularly welded on the side walls of the supporting column (13) and the mounting plate (17) respectively, the supporting block (18) is perpendicularly welded on the other side wall of the mounting plate (17), and the second roller (19) is installed in the supporting block (18).
3. The surface hardening quenching apparatus for copper alloy castings according to claim 1, characterized in that: the auxiliary pressing device comprises a supporting shaft (20), a rolling shaft (21), an installation frame (22), a fixing block (23), a tension spring (24), a fixing rod (25), a limiting block (26), a U-shaped frame (27), a cylindrical pin (28) and a vertical rod (29), wherein the U-shaped frame (27) is welded on the upper inner wall of the quenching device main body (1), the vertical rod (29) is installed in the U-shaped frame (27), the vertical rod (29) is movably connected with the U-shaped frame (27) through the cylindrical pin (28), the installation frame (22) is vertically welded at the lower end of the vertical rod (29), the supporting shaft (20) is installed in the installation frame (22), the rolling shaft (21) is installed on the supporting shaft (20), the fixing block (23) is vertically welded on the side wall of the lower end of the vertical rod (29), the tension spring (24) is fixed on the fixing block (23), the other end of the tension spring (24) is fixed at the lower, a limiting block (26) is welded on one side of the U-shaped frame (27).
4. The surface hardening quenching apparatus for copper alloy castings according to claim 1, characterized in that: the scraping rod (6) and the scraper (8) are arc-shaped, and the radian of the scraping rod is consistent with that of the lower part of the quenching device main body (1), so that the scraping rod (6) and the scraper (8) are more attached to the inner wall of the quenching device main body (1).
5. The surface hardening quenching apparatus for copper alloy castings according to claim 1, characterized in that: the length of the track groove (9) is the same as that of the quenching device main body (1).
6. The surface hardening quenching apparatus for copper alloy castings according to claim 1, characterized in that: eight groups are no less than in deflector roll (3), and seven groups are no less than in spray gun (5), and there are four in every group spray gun (5), are circular array in guenching unit main part (1), and every group spray gun (5) is in between two sets of adjacent deflector rolls (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110027860.4A CN112853240A (en) | 2021-01-11 | 2021-01-11 | Surface strengthening and quenching device for copper alloy casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110027860.4A CN112853240A (en) | 2021-01-11 | 2021-01-11 | Surface strengthening and quenching device for copper alloy casting |
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| CN112853240A true CN112853240A (en) | 2021-05-28 |
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| CN202110027860.4A Pending CN112853240A (en) | 2021-01-11 | 2021-01-11 | Surface strengthening and quenching device for copper alloy casting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699349A (en) * | 2021-10-28 | 2021-11-26 | 南通恒泰热处理有限公司 | Heat treatment quenching device for plates |
| CN114657340A (en) * | 2022-05-27 | 2022-06-24 | 南通雄泰铜业有限公司 | High-frequency quenching equipment for copper alloy |
| CN115287422A (en) * | 2022-08-11 | 2022-11-04 | 董永 | Quenching device and quenching method for machining of mechanical castings |
-
2021
- 2021-01-11 CN CN202110027860.4A patent/CN112853240A/en active Pending
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| 余伟等: "《热轧钢材的组织性能控制-原理、工艺与装备》", 31 October 2016, 冶金工业出版社 * |
| 魏长传等: "《铝合金管、棒、线材生产技术》", 31 March 2013, 冶金工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699349A (en) * | 2021-10-28 | 2021-11-26 | 南通恒泰热处理有限公司 | Heat treatment quenching device for plates |
| CN113699349B (en) * | 2021-10-28 | 2022-05-17 | 南通恒泰热处理有限公司 | Heat treatment quenching device for plates |
| CN114657340A (en) * | 2022-05-27 | 2022-06-24 | 南通雄泰铜业有限公司 | High-frequency quenching equipment for copper alloy |
| CN115287422A (en) * | 2022-08-11 | 2022-11-04 | 董永 | Quenching device and quenching method for machining of mechanical castings |
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Application publication date: 20210528 |