CN111172356A - Quenching device for heat treatment of piston rod - Google Patents
Quenching device for heat treatment of piston rod Download PDFInfo
- Publication number
- CN111172356A CN111172356A CN201811345565.8A CN201811345565A CN111172356A CN 111172356 A CN111172356 A CN 111172356A CN 201811345565 A CN201811345565 A CN 201811345565A CN 111172356 A CN111172356 A CN 111172356A
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- Prior art keywords
- coil
- spray
- workpiece
- water
- machine body
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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
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
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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
- 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
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
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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
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
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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
- Y02P10/25—Process efficiency
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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)
- Heat Treatment Of Articles (AREA)
Abstract
The invention provides a quenching device for heat treatment of a piston rod, which comprises a machine body, wherein a fixed chuck is arranged on the machine body, a top is arranged at the front end of the fixed chuck, a workpiece is arranged in front of the top, a rear tailstock top is arranged behind the workpiece, a movable transformer is arranged between the top and the rear tailstock top, a spray coil and an induction coil are arranged in front of the movable transformer, a connecting plate is fixedly arranged between the spray coil and the induction coil through bolts, a water inlet pipe B is arranged on the outer side of the spray coil, a water inlet pipe A and a water outlet pipe are arranged on two sides of the induction coil, water spray holes are respectively arranged on the inner sides of the spray coil and the induction coil, a wire groove track and a cooling liquid groove. The invention uses cooling water to cool after heating by the induction heating coil, thereby achieving the purpose of surface quenching.
Description
Technical Field
The invention belongs to the technical field of mechanical equipment, and particularly relates to a quenching device for heat treatment of a piston rod.
Background
A piston rod of a hydraulic oil cylinder used in the engineering machinery industry is a key part of the oil cylinder and is also a vulnerable part. The piston rod is exposed outside in the construction process, so that the collision phenomenon is easily caused, and the practice statistics shows that the occurrence rate of the collision without medium frequency on the surface is 2-3 times higher than the medium frequency on the surface, the piston rod is scratched after collision, the sealing element is scratched, the oil leakage phenomenon occurs, the machine cannot work when the oil leakage is serious, and the service life and the service performance of the oil cylinder are seriously influenced. The traditional piston rod intermediate frequency furnace is mostly a vertical furnace, and is difficult to load and unload a long piston rod, large in workpiece deformation, large in power consumption, low in heating speed, and causes the phenomena of serious surface oxidation and decarburization of a workpiece, uneven internal structure and the like.
Disclosure of Invention
The invention provides a quenching device for heat treatment of a piston rod, which solves the defects of serious surface oxidation and decarburization and uneven internal structure of a workpiece caused by difficult loading and unloading of a long piston rod, large workpiece deformation, large power consumption and low heating speed in the background technology.
The technical scheme of the invention is realized as follows: the quenching device for heat treatment of the piston rod comprises a machine body, wherein a fixed chuck is arranged on the machine body, a tip is arranged at the front end of the fixed chuck, a workpiece is arranged in front of the tip, a rear tailstock tip is arranged behind the workpiece, a movable transformer is arranged between the tip and the rear tailstock tip, a spray coil and an induction coil are arranged in front of the movable transformer, a connecting plate is fixedly arranged between the spray coil and the induction coil through bolts, a water inlet pipe B is arranged outside the spray coil, a water inlet pipe A and a water outlet pipe are arranged on two sides of the induction coil, water spray holes are formed in the inner sides of the spray coil and the induction coil, a wire casing rail and a cooling liquid tank are arranged on;
the spraying coil and the induction heating coil are formed by surrounding a red copper hollow pipe, the water spraying holes inclined at the inner side are inclined towards the direction of a workpiece by 45 +/-2 degrees, the diameter of each water spraying hole is phi 2mm, and the distance between the two water spraying holes is 5 mm.
The invention has the beneficial effects that: in order to ensure the heat treatment quality and improve the heat efficiency, the invention designs the inductor with a proper structure according to the shape of the workpiece, thereby effectively improving the production efficiency, and the induction heater is matched with the medium-frequency power supply, thereby realizing the control of the induction temperature by a numerical control program and having the advantages of small deformation of the workpiece, small power consumption, high heating speed, light oxidation and decarburization on the surface of the workpiece and uniform internal structure.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic diagram of the induction coil and shower coil of the present invention;
3 FIG. 3 3 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 2 3 according 3 to 3 the 3 present 3 invention 3. 3
1. Description of the parts: 1. the device comprises a fixed chuck, 2, a tip, 3, a rear tailstock tip, 4, a workpiece, 5, a water outlet pipe, 6, a movable transformer, 7, a program control cabinet, 8, a wire groove track, 9, a cooling liquid groove, 10, a machine body, 11, water inlet pipes A and 12, a spraying coil, 13, an induction coil, 14, water inlet pipes B and 15, water spray holes, 16, a connecting plate, 17 and bolts.
Detailed Description
For a better understanding and appreciation of the invention, it will be further described in connection with the accompanying drawings: the quenching device for heat treatment of the piston rod comprises a machine body 10, wherein a fixed chuck 1 is arranged on the machine body 10, a tip 2 is arranged at the front end of the fixed chuck 1, a workpiece 4 is arranged in front of the tip 2, a rear tailstock tip 3 is arranged behind the workpiece 4, a movable transformer 6 is arranged between the tip 2 and the rear tailstock tip 3, a spray coil 12 and an induction coil 13 are arranged in front of the movable transformer 6, a connecting plate 16 is fixedly arranged between the spray coil 12 and the induction coil 13 through a bolt 17, a water inlet pipe B14 is arranged outside the spray coil 12, a water inlet pipe A11 and a water outlet pipe 5 are arranged on two sides of the induction coil 13, water spray holes 15 are arranged on the inner sides of the spray coil 12 and the induction coil 13, the spray coil 12 and the induction coil 13 are formed by surrounding red copper hollow pipes, the water spray holes 15 inclined on the inner side are inclined at an angle of 45 degrees to the direction of, a trunking track 8 and a cooling liquid tank 9 are arranged on a machine body 10 below the workpiece 4, and a program control cabinet 7 is arranged on the rear side of the machine body 10.
Firstly, the fixed chuck 1 is started, the parameter is 100-150 r/min, the tip 2 and the workpiece 4 are driven to rotate, then the cold water removing button is started, cooling water passes through the induction coil water inlet pipe A11 and the spray coil water inlet pipe B14, and then the surface of the workpiece 4 is sprayed through the water spraying holes 15. Before the induction coil 13 is electrified and started, cooling water is sprayed to prevent the coil from overheating, after the movable transformer 6 is started and stays for 3-5 seconds, the spraying coil 12 and the induction heating coil 13 are moved to axially move towards the piston rod at the speed of 80-200mm/min, when the temperature of the piston rod is continuously heated to 880-950 ℃, the cooling water is continuously sprayed to cool the workpiece, and part of the cooling water flows to the cooling liquid tank 9 to be recycled.
After the piston rod is heated, part of the cooling water is provided with water spray holes inclined towards the inner side of the workpiece from the lower inner side positions of the two annular hollow pipes and sprayed to the heated position of the piston rod for rapid cooling quenching. The positions of the water spray holes are arranged at the lower edge of the inner side of the inductor downwards and inwards 45 degrees to form continuous and uniform distribution, and the diameter phi of the water spray holes is 2mm, and the distance between the water spray holes is 5 mm. The two sensors are simultaneously provided with the water spray holes, the junction parts of the two water spray holes are opposite to the surface of the piston rod, the water spray can not generate a rapid cooling dead angle, the hardness and the depth tissue of the surface of the piston rod are uniform after quenching, and the production efficiency and the product quality are effectively improved.
Claims (2)
1. The quenching device for heat treatment of the piston rod comprises a machine body (10), wherein a fixed chuck (1) is arranged on the machine body (10), a tip (2) is arranged at the front end of the fixed chuck (1), a workpiece (4) is arranged in front of the tip (2), a rear tailstock tip (3) is arranged behind the workpiece (4), the quenching device is characterized in that a movable transformer (6) is arranged between the tip (2) and the rear tailstock tip (3), a spray coil (12) and an induction coil (13) are arranged in front of the movable transformer (6), a connecting plate (16) is fixedly arranged between the spray coil (12) and the induction coil (13) through bolts (17), a water inlet pipe B (14) is arranged outside the spray coil (12), a water inlet pipe A (11) and a water outlet pipe (5) are arranged on two sides of the induction coil (13), and water spray holes (15) are respectively arranged on the inner sides of the spray coil, a wire groove track (8) and a cooling liquid tank (9) are arranged on the machine body (10) below the workpiece (4), and a program control cabinet (7) is arranged on the rear side of the machine body (10).
2. The quenching apparatus for heat treatment of piston rods according to claim 1, characterized in that the shower coil (12) and the induction heating coil (13) are formed by surrounding a red copper hollow tube, the inner inclined water jet holes (15) are inclined at 45 ± 2 ° to the workpiece (4), the diameter of the water jet holes (15) is phi 2mm, and the distance between the two water jet holes is 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345565.8A CN111172356A (en) | 2018-11-13 | 2018-11-13 | Quenching device for heat treatment of piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345565.8A CN111172356A (en) | 2018-11-13 | 2018-11-13 | Quenching device for heat treatment of piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111172356A true CN111172356A (en) | 2020-05-19 |
Family
ID=70651786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811345565.8A Pending CN111172356A (en) | 2018-11-13 | 2018-11-13 | Quenching device for heat treatment of piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111172356A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941069A (en) * | 2022-05-24 | 2022-08-26 | 东莞广之源电子科技有限公司 | Automatic piston rod quenching equipment |
-
2018
- 2018-11-13 CN CN201811345565.8A patent/CN111172356A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941069A (en) * | 2022-05-24 | 2022-08-26 | 东莞广之源电子科技有限公司 | Automatic piston rod quenching equipment |
| CN114941069B (en) * | 2022-05-24 | 2024-01-19 | 东莞广之源电子科技有限公司 | Automatic change piston rod quenching equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200519 |
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| WD01 | Invention patent application deemed withdrawn after publication |