CN101549459B - Manufacturing technology of individual hydraulic prop piston - Google Patents
Manufacturing technology of individual hydraulic prop piston Download PDFInfo
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- CN101549459B CN101549459B CN2009100150879A CN200910015087A CN101549459B CN 101549459 B CN101549459 B CN 101549459B CN 2009100150879 A CN2009100150879 A CN 2009100150879A CN 200910015087 A CN200910015087 A CN 200910015087A CN 101549459 B CN101549459 B CN 101549459B
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- forging
- piston
- hydraulic prop
- individual hydraulic
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Abstract
The invention relates to a manufacturing technology of an individual hydraulic prop piston, which comprises the following steps of: a. blanking; b. heating a steel billet blanked to a temperature between 900 DEG C and 1,200 DEG C; c. completing billet manufacturing of the heated steel billet on mechanical billet manufacturing equipment; d. forging the billet manufactured on a friction press in a closed manner; e. heat-treating a piston forge piece forged by using surplus heat from forging; and f. one-step finishing the manufacturing of the piston forge piece heat-treated by processing on a rough and fine machine. The invention utilizes the closed type die forging of the friction press (or metal forming machineries of other types) to replace fitting piston blanks of coal mine individual hydraulic prop of laminated spring hammer blocker-type forging with high energy consumption, low production efficiency and poor technical equipment, thus being capable of saving raw materials, improvingproduction efficiency and reducing production cost. The use of surplus heat from the forging of piston blanks for heat treatment not only satisfies the requirements on hardness, but also reduces production cost.
Description
Technical field
The present invention relates to a kind of piston production technology, especially a kind of manufacturing technology of individual hydraulic prop piston.
Background technology
At present, the production technology of the accessory piston (as shown in Figure 1) of colliery hydraulic prop following (is example to produce the DW type):
(2.2～2.3KG) → steel billet is heated to 1100～1250 ℃ → usefulness board drop hammer loose tooling forging → lathe roughing → heat treatment → lathe fine finishining with Fuel Furnace to buy round steel or square steel → blanking.
The problem that exists when the secondary piston production technology is as follows:
1, uses backward forging equipment---board drop hammer (equipment energy consumption height, low precision); With the contour forging technique that is not suitable for producing in enormous quantities---the accessory piston blank of hydraulic prop is produced in loose tooling forging, and piston blank size, Weight control are bad, cause using the many (materials 2.2～2.3KG) of steel.The moulds of industrial equipment of used forging piston are all used manually-operated, and labor intensity of operating personnel is very big, cause production efficiency low.
2, for reducing machined and heat place resistance reason expense, heat-treat (800 ~ 860 heating, insulation a period of time, running water or aqueous solution quench, 500 ~ 570 degree insulations tempering in 1.5 ~ 5 hours) after the piston roughing again, cause piston hardness instability, the piston product quality is not high.
3, in process of production, lathe divides thick, finishing step, reduces production efficiency, has increased production cost.
Summary of the invention
The objective of the invention is provides the manufacturing technology of individual hydraulic prop piston that a kind of labour intensity is low, production efficiency is high, production cost is low for overcoming above-mentioned the deficiencies in the prior art.
For achieving the above object, the present invention adopts following technical proposals:
A kind of manufacturing technology of individual hydraulic prop piston may further comprise the steps:
A, blanking;
B, steel billet that blanking is good are with being heated to 900～1200 ℃;
C, with the heating steel billet on mechanical shaping equipment, finish base;
D, the blank that will make carry out closed-die forging on friction press;
E, the piston forging that forging is good utilize residual forging heat heat treatment;
F, the piston forging that heat treatment is good are once finished by thick, the smart machined of lathe.
Utilize residual forging heat heat treatment for the piston forging was cooled off for 3～6 seconds in running water after among the described step e, singlely be placed in cool to room temperature in the air.
The residual forging heat heat treatment that utilizes among the described step e is that air cooling was used 560 ± 30 ℃ of tempering of well formula tempering furnace again to room temperature after 0～10% saline solution cooled off for 10～15 seconds for the piston forging being put into concentration.
Utilize residual forging heat heat treatment for the piston forging was cooled off for 2～8 seconds in organic hardening media after among the described step e, singlely be placed in cool to room temperature in the air.
Described organic hardening media is modern Yu 8-20 quenching medium.
The present invention utilizes friction press (or metal forming machinery of other pattern) closed die forging to replace the accessory piston blank of energy consumption height, production efficiency is low, technological equipment falls behind board drop hammer loose tooling forging colliery hydraulic prop, can save raw material, enhances productivity, reduce production costs.Heat-treat with the piston blank residual forging heat, can reach the hardness requirement, reduced production cost again.In the practical application, overall output per manshift is brought up to 1200～4000 by 400～600, saves the heat treatment step after the roughing, enhances productivity 1～3 times; Every piston is saved steel 0.5～0.65kg, energy savings 0.7kw.h; Every individual hydraulic prop piston production cost is than low 1.8～3.2 yuan of present technology.The annual individual hydraulic prop piston of producing in the whole nation can be saved social resources every year more than 7,000,000 yuan more than more than 280 ten thousand.
Description of drawings
Fig. 1 is accessory piston figure in the background technology;
Fig. 2 is a piston forging drawing among the embodiment 1-3;
Fig. 3 is a piston forging drawing among the embodiment 4-6;
Fig. 4 is a piston forging drawing among the embodiment 7-9.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
Embodiment 1: buying diameter is the round steel of 55mm, blanking 1.55Kg, be heated to 900 ℃ with the round steel of 300KW Medium Frequency Induction Heating Furnace after with blanking, round steel after will heating again is pressed into the round base that diameter is 82 ± 1mm on 100 tons of punch presses, to justify base puts into 630 tons of friction press moulds and carries out the dissection type closed-die forging, friction press automatic material jacking device ejects piston forging and internal mold (forging piston forging shape as shown in Figure 2), operating personnel clamp piston forging two ends with pliers, cooled off for 3 seconds in running water after, single piston forging is placed in cool to room temperature in the air; Then that the piston forging is thick by lathe, fine finishining is once finished.
In the present embodiment, every DW type piston production cost is than low 2.2 yuan of present technology.
Embodiment 2: buying diameter is the round steel of 55mm, blanking 1.58Kg, be heated to 1000 ℃ with the round steel of 300KW Medium Frequency Induction Heating Furnace after with blanking, round steel after will heating again is pressed into the round base that diameter is 82 ± 1mm on 160 tons of punch presses, to justify base puts into 630 tons of friction press moulds and carries out the dissection type closed-die forging, friction press automatic material jacking device ejects piston forging and internal mold (forging piston forging shape as shown in Figure 2), operating personnel clamp piston forging two ends with pliers, cooled off for 5 seconds in running water after, single piston forging is placed in cool to room temperature in the air; Then that the piston forging is thick by lathe, fine finishining is once finished.
In the present embodiment, every DW type piston production cost is than low 3 yuan of present technology.
Embodiment 3: buying diameter is the round steel of 55mm, blanking 1.68Kg, be heated to 900 ℃ with the round steel of 300KW Medium Frequency Induction Heating Furnace after with blanking, round steel after will heating again is pressed into the round base that diameter is 82 ± 1mm on 160 tons of punch presses, to justify base puts into 630 tons of hotdie forging press moulds and carries out closed-die forging, friction press automatic material jacking device ejects piston forging and internal mold (forging piston forging shape as shown in Figure 2), operating personnel clamp piston forging two ends with pliers, cooled off for 6 seconds in running water after, single piston forging is placed in cool to room temperature in the air; Then that the piston forging is thick by lathe, fine finishining is once finished.
In the present embodiment, every DW type piston production cost is than low 3.0 yuan of present technology.
Embodiment 4: buying specification is the steel billet of 60 * 60mm, blanking 1.55Kg, steel billet after the blanking is heated to 900 ℃ by coal-fired gas furnace, steel billet after the heating is made the round base that diameter is 100 ± 1.5mm on the 400Kg pneumatic hammer, to justify base again puts into 630 tons of hotdie forging press moulds and carries out closed-die forging (forging piston forging shape as shown in Figure 3), operating personnel clamp piston forging two ends with pliers, and to put it into concentration be in 3% the saline solution after 10 seconds of cooling, air cooling is used 530 ℃ of tempering of well formula tempering furnace again to room temperature; Then that the piston forging is thick by lathe, fine finishining is once finished.
In the present embodiment, every DW type piston production cost is than low 1.8 yuan of present technology.
Embodiment 5: buying specification is the steel billet of 60 * 60mm, blanking 1.65Kg, steel billet after the blanking is heated to 1100 ℃ by coal-fired gas furnace, steel billet after the heating is made the round base that diameter is 100 ± 1.5mm on the 400Kg pneumatic hammer, to justify base again puts into 630 tons of hotdie forging press moulds and carries out closed-die forging (forging piston forging shape as shown in Figure 3), operating personnel clamp piston forging two ends with pliers, and to put it into concentration be in 8% the saline solution after 12 seconds of cooling, air cooling is used 560 ℃ of tempering of well formula tempering furnace again to room temperature; Then that the piston forging is thick by lathe, fine finishining is once finished.
In the present embodiment, every DW type piston production cost is than low 2.1 yuan of present technology.
Embodiment 6: buying specification is the steel billet of 60 * 60mm, blanking 1.68Kg, steel billet after the blanking is heated to 1200 ℃ by coal-fired gas furnace, steel billet after the heating is made the round base that diameter is 100 ± 1.5mm on the 400Kg pneumatic hammer, to justify base again puts into 630 tons of hotdie forging press moulds and carries out closed-die forging (forging piston forging shape as shown in Figure 3), operating personnel clamp piston forging two ends with pliers, and to put it into concentration be in 10% the saline solution after 15 seconds of cooling, air cooling is used 590 ℃ of tempering of well formula tempering furnace again to room temperature; Then that the piston forging is thick by lathe, fine finishining is once finished.
In the present embodiment, every DW type piston production cost is than low 2.6 yuan of present technology.
Embodiment 7: buying diameter is the round steel of 55mm, blanking 1.55Kg, round steel after the blanking is heated to 900 ℃ with coal-fired gas furnace, round steel after the heating is placed on base on 200 tons of punch presses, the mould of the blank that makes being put into forging equipment carries out closed-die forging again, forges piston forging shape as shown in Figure 4, and operating personnel clamp piston forging two ends with pliers, cooled off for 2 seconds in modern Yu 8-20 quenching medium after, single piston forging is placed in cool to room temperature in the air; Then that the piston forging is thick by lathe, fine finishining is once finished.
In the present embodiment, every DW type piston production cost is than low 2.5 yuan of present technology.
Embodiment 8: buying diameter is the round steel of 55mm, blanking 1.6Kg, round steel after the blanking is heated to 1100 ℃ with coal-fired gas furnace, round steel after the heating is placed on base on 160 tons of punch presses, the mould of the blank that makes being put into forging equipment carries out closed-die forging again, forges piston forging shape as shown in Figure 4, and operating personnel clamp piston forging two ends with pliers, cooled off for 5 seconds in modern Yu 8-20 quenching medium after, single piston forging is placed in cool to room temperature in the air; Then that the piston forging is thick by lathe, fine finishining is once finished.
In the present embodiment, every DW type piston production cost is than low 2.0 yuan of present technology.
Embodiment 9: buying diameter is the round steel of 55mm, blanking 1.68Kg, round steel after the blanking is heated to 1180 ℃ with coal-fired gas furnace, round steel after the heating is placed on base on 100 tons of punch presses, the mould of the blank that makes being put into forging equipment carries out closed-die forging again, forges piston forging shape as shown in Figure 4, and operating personnel clamp piston forging two ends with pliers, cooled off for 8 seconds in modern Yu 8-20 quenching medium after, single piston forging is placed in cool to room temperature in the air; Then that the piston forging is thick by lathe, fine finishining is once finished.
In the present embodiment, every DW type piston production cost is than low 3.2 yuan of present technology.
Embodiment recited above; only be that preferred implementation of the present invention is described; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design concept of the present invention; common engineers and technicians make technical scheme of the present invention in this area various modification and improvement; all should fall into protection scope of the present invention
Claims (6)
1. manufacturing technology of individual hydraulic prop piston is characterized in that: may further comprise the steps:
A, blanking;
B, the steel billet that blanking is good are heated to 900～1200 ℃;
C, with the heating steel billet on mechanical shaping equipment, finish base;
D, the blank that makes is carried out closed-die forging on friction press;
E, the piston forging that forging is good utilize residual forging heat heat treatment;
F, the piston forging that heat treatment is good are once finished by thick, the smart machined of lathe.
2. manufacturing technology of individual hydraulic prop piston according to claim 1 is characterized in that: add the heating of thermal recovery electric furnace or Fuel Furnace among the described step b.
3. manufacturing technology of individual hydraulic prop piston according to claim 1, it is characterized in that: utilize residual forging heat heat treatment for the piston hot forging was cooled off for 3～6 seconds in running water after among the described step e, single piston forging is placed in cool to room temperature in the air.
4. manufacturing technology of individual hydraulic prop piston according to claim 1, it is characterized in that: the residual forging heat heat treatment that utilizes among the described step e is after 0～10% saline solution cooled off for 10～15 seconds for the piston hot forging being put into concentration, air cooling is used 560 ± 30 ℃ of tempering of well formula tempering furnace again to room temperature.
5. manufacturing technology of individual hydraulic prop piston according to claim 1, it is characterized in that: utilize residual forging heat heat treatment for the piston hot forging was cooled off for 2～8 seconds in organic hardening media after among the described step e, single piston forging is placed in cool to room temperature in the air.
6. manufacturing technology of individual hydraulic prop piston according to claim 5 is characterized in that: described organic hardening media is modern Yu 8-20 quenching medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100150879A CN101549459B (en) | 2009-05-08 | 2009-05-08 | Manufacturing technology of individual hydraulic prop piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100150879A CN101549459B (en) | 2009-05-08 | 2009-05-08 | Manufacturing technology of individual hydraulic prop piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101549459A CN101549459A (en) | 2009-10-07 |
| CN101549459B true CN101549459B (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100150879A Expired - Fee Related CN101549459B (en) | 2009-05-08 | 2009-05-08 | Manufacturing technology of individual hydraulic prop piston |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898296A (en) * | 2010-07-16 | 2010-12-01 | 上海华迅汽车配件有限公司 | Preparation method of piston of automobile steering device |
| CN104325053B (en) * | 2014-09-03 | 2017-02-01 | 汤汉良 | Heading and extruding production method for spray deposition gradient aluminum alloy composite material piston and device thereof |
| CN104313253A (en) * | 2014-10-08 | 2015-01-28 | 柳州科尔特锻造机械有限公司 | Piston rod and rim shaft forging and thermal treatment process |
| CN112122892A (en) * | 2020-08-13 | 2020-12-25 | 海天塑机集团有限公司 | Processing technology and die for injection piston body |
| CN114749597A (en) * | 2022-04-29 | 2022-07-15 | 力野精密工业（深圳）有限公司 | Precision forging process for novel compressor piston body of automobile |
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2009
- 2009-05-08 CN CN2009100150879A patent/CN101549459B/en not_active Expired - Fee Related
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Granted publication date: 20100714 Termination date: 20130508 |