CN101549459A - Manufacturing technology of individual hydraulic prop piston - Google Patents
Manufacturing technology of individual hydraulic prop piston Download PDFInfo
- Publication number
- CN101549459A CN101549459A CNA2009100150879A CN200910015087A CN101549459A CN 101549459 A CN101549459 A CN 101549459A CN A2009100150879 A CNA2009100150879 A CN A2009100150879A CN 200910015087 A CN200910015087 A CN 200910015087A CN 101549459 A CN101549459 A CN 101549459A
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- forging
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- hydraulic prop
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 238000005516 engineering process Methods 0.000 title description 20
- 238000005242 forging Methods 0.000 claims abstract description 100
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 239000002918 waste heat Substances 0.000 claims abstract 6
- 238000003754 machining Methods 0.000 claims abstract 2
- 238000005496 tempering Methods 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 8
- 230000000171 quenching effect Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000008399 tap water Substances 0.000 claims 1
- 235000020679 tap water Nutrition 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract 1
- 239000011120 plywood Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 34
- 239000010959 steel Substances 0.000 description 34
- 238000001816 cooling Methods 0.000 description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 238000002224 dissection Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004260 weight control Methods 0.000 description 1
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Abstract
本发明涉及一种单体液压支柱活塞生产工艺，包括以下步骤a.下料；b.将下料好的钢坯用加热到900～1200℃；c.将加热的钢坯在机械制坯设备上完成制坯；d.将制好好的坯件在摩擦压力机上进行闭式锻造；e.锻造好的活塞锻件利用锻造余热热处理；f.将热处理好的活塞锻件通过车床粗、精机加工一次完成。本发明利用摩擦压力机(或其它型式的锻压机械)闭式模锻代替能耗高、生产效率低、工艺装备落后的夹板锤胎模锻煤矿单体液压支柱的配件活塞毛坯，能节省原材料、提高生产效率、降低生产成本。用活塞毛坯锻造余热进行热处理，既能达到硬度要求，又降低了生产成本。
The invention relates to a production process of a single hydraulic prop piston, comprising the following steps: a. blanking; b. heating the blanked billet to 900-1200°C; c. finishing the heated billet on mechanical billet making equipment Blank making; d. Closed forging of the finished blank on a friction press; e. Heat treatment of the forged piston forging with waste heat from forging; f. Finishing the heat-treated piston forging through rough and fine machining on a lathe. The present invention utilizes the friction press (or other types of forging machinery) closed die forging to replace the plywood hammer tire die forging accessory piston blanks of coal mine single hydraulic props with high energy consumption, low production efficiency and backward process equipment, which can save raw materials, Improve production efficiency and reduce production costs. Using the waste heat of piston blank forging for heat treatment can not only meet the hardness requirement, but also reduce the 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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100150879A CN101549459B (en) | 2009-05-08 | 2009-05-08 | Single hydraulic prop piston production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100150879A CN101549459B (en) | 2009-05-08 | 2009-05-08 | Single hydraulic prop piston production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101549459A true CN101549459A (en) | 2009-10-07 |
| CN101549459B 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 | Single hydraulic prop piston production process |
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| Country | Link |
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| CN (1) | CN101549459B (en) |
Cited By (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 |
| 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 |
| CN104325053A (en) * | 2014-09-03 | 2015-02-04 | 汤汉良 | Heading and extruding production method for spray deposition gradient aluminum alloy composite material piston and device thereof |
| 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 |
-
2009
- 2009-05-08 CN CN2009100150879A patent/CN101549459B/en not_active Expired - Fee Related
Cited By (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 |
| CN104325053A (en) * | 2014-09-03 | 2015-02-04 | 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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| Publication number | Publication date |
|---|---|
| CN101549459B (en) | 2010-07-14 |
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Granted publication date: 20100714 Termination date: 20130508 |