CN101559470A - Manufacturing technique of hydraulic cylinder body - Google Patents
Manufacturing technique of hydraulic cylinder body Download PDFInfo
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- CN101559470A CN101559470A CNA2009100159074A CN200910015907A CN101559470A CN 101559470 A CN101559470 A CN 101559470A CN A2009100159074 A CNA2009100159074 A CN A2009100159074A CN 200910015907 A CN200910015907 A CN 200910015907A CN 101559470 A CN101559470 A CN 101559470A
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Abstract
The invention relates to a manufacturing technique of a hydraulic cylinder body, comprising the following steps: a. purchasing seamless tube; b. blanking; c. heating the parts of the seamless tube which need forging and deforming to 900-1250 DEG C; d. placing the heated seamless tube in step c in a forging device to be forged in a sealed manner, thus turning out steps of a hydraulic cylinder body mounting sealing ring; e. cooling the obtained hydraulic cylinder body forging piece blank in the air to room temperature; f. carrying out heat treatment; g. carrying out machining on a machine tool; h. carrying out superficial treatment; i. obtaining the finished product. In the invention, closed die forging is adopted to turn out the hydraulic cylinder body mounting sealing ring part, so that the technique of mechanically turning out hydraulic cylinder body by directly using thick wall tubes (or the technique of welding by electric welding used for two seamless tubes with different wall thickness and then mechanically turning out the hydraulic cylinder body) can be replaced, thus improving stability and work efficiency of product quality and reducing production cost. With the manufacturing technique adopted, the production cost of each hydraulic cylinder body is cheaper than the production cost generated when the existing manufacturing technique is adopted. Considering over 20 million pieces of hydraulic cylinder body can be turned out annually throughout the country, as a result, social resources can be saved.
Description
Technical field
The present invention relates to a kind of production technology of hydraulic cylinder body.
Background technology
At present, produce the production technology following (the hydraulic cylinder body finished product is as shown in Figure 1) of supporting hydraulic cylinder body under automobile, tractor engineering hydraulic cylinder body and the coal mine:
1, supporting etc. requires safe hydraulic cylinder under automobile, the coal mine:
Buy thick-wall seamless (according to the thickness at hydraulic packing circle place) → heat treatment → lathe machined → surface treatment → finished product
There are the following problems with hydraulic cylinder body that this production technology is produced:
Go out hydraulic cylinder body impulse stroke inwall place and, increase machine tooling cost and reduction production efficiency with the direct machine tooling of thick-wall seamless by dress sealing ring place.
2, not really important hydraulic cylinder such as automobile, tractor:
Purchase is fit to do hydraulic cylinder body sealing ring place thick-wall seamless and does hydraulic cylinder body seamless pipe → two kinds of different seamless pipes of wall thickness are beaten bevel for welding, welds (as shown in Figure 2) → heat treatment → lathe machined → surface treatment → finished product with electric welding.
There are the following problems with hydraulic cylinder body that this production technology is produced:
After a, two kinds of different seamless pipes of wall thickness welded with electric welding, pore, sand holes appearred in welding position easily, and quality problems such as leakage or sepage take place in the use afterwards.
B, in use, plastic deformation takes place at the weld bond place and scraps in the part cylinder body.
C, increase production cost and reduction production efficiency.
Summary of the invention
The objective of the invention is provides a kind of and improves the quality for overcoming above-mentioned the deficiencies in the prior art, the hydraulic cylinder body production technology that reduces production costs, enhances productivity.
For achieving the above object, the present invention adopts following technical proposals:
A kind of production technology of hydraulic cylinder body may further comprise the steps:
A, purchase seamless pipe;
B, blanking;
C, need forging deformation partly to be heated to 900～1250 ℃ seamless pipe;
D, step c heated seamless tube is put into the forging equipment closed-die forging, forge the step that hydraulic cylinder body is installed sealing ring;
E, with hydraulic cylinder body forging blank cool to room temperature in air of finishing in the steps d;
F, heat treatment;
G, lathe machined;
H, surface treatment;
I, finished product.
Adopt superaudio machine or medium frequency equipment or coal gas or natural gas or High-frequency machine heating when seamless pipe heats among the described step c.
Forging equipment in the described steps d is hydraulic press or friction press or punch press.
Step b among the present invention, f, g, h, i are common process, do not repeat them here.
The present invention utilizes closed die forging to forge hydraulic cylinder body by dress sealing ring place, replace directly with thick-walled pipe handset tool process hydraulic cylinder body (or with two kinds of different wall pipes with after the electric welding butt welding again machining go out hydraulic cylinder body), improved the stability of product quality, improve production efficiency, reduced production cost.After adopting the present invention, every hydraulic cylinder body production cost is than low 1.0～30.0 yuan of present technology.The annual hydraulic cylinder of producing in the whole nation can be saved social resources more than 3,600 ten thousand yuan more than more than 2,000 ten thousand.
Description of drawings
Fig. 1 is a hydraulic cylinder body finished product schematic diagram in the background technology;
Fig. 2 is that hydraulic cylinder body blank schematic diagram is produced in the electric welding welding in the background technology;
Fig. 3 is the hydraulic cylinder body forging blank schematic diagram of the embodiment of the invention 1,3,4,6,7,9 described explained hereafter;
Fig. 4 is hydraulic press and embodiment 1 described closed die forging mould structure schematic diagram;
Fig. 5 is embodiment 4 and embodiment 7 described closed die forging mould structure schematic diagrames;
Fig. 6 is embodiment 2, embodiment 5 and embodiment 8 described closed die forging mould structure schematic diagrames;
Fig. 7 is the hydraulic cylinder body forging blank schematic diagram of the embodiment of the invention 2,5,8 described explained hereafter;
Fig. 8 is embodiment 3, embodiment 6 and embodiment 9 described closed die forging mould structure schematic diagrames;
Wherein, 1. master cylinder, 2. upper cylinder, 3. die tire, 4. internal mold, 5. seamless pipe, 6. cylinder, 7. inner core 8. plays oil cylinder, and 9. whole die 10. two is opened die.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
Embodiment 1 (hydraulic cylinder body with production overall diameter 89mm is an example):
Buy external diameter 89mm, the seamless pipe of wall thickness 6.5mm, the long 567mm of band sawing machine blanking is heated to 900 ℃ with the 5 usefulness High-frequency machines of the seamless pipe after the blanking, puts on 200 tons of hydraulic presses again and carries out closed-die forging.
The closed-die forging course of work is: as shown in Figure 4, after the start, hydraulic press is in reset condition, and operating personnel are put into the seamless pipe 5 that heats on the workbench; Step on floor push, the upwards work of following oil cylinder 8, inner core 7 penetrates in the seamless pipe 5, drives seamless pipe 5 and makes progress away, enters three and opens internal mold; When seamless pipe 5 enter three open internal mold bottom after, touch switch, cylinder 6 work (blocking inner core 7 glides), upper cylinder 2 work (clamp three and open internal mold), oil cylinder 8 quits work down; Upper cylinder 2 work finish, touch switch, master cylinder 1 work; When master cylinder 1 oil pressure reached 16MPa, cylinder body forging blank closed-die forging was finished; Master cylinder 1, upper cylinder 2 and cylinder 6 backhauls; When certain position was arrived in cylinder 6 backhauls, following oil cylinder 8 was worked downwards, and inner core, three is opened the lubricated and cooling of internal mold, finished a working cycles, prepared the closed-die forging of second workpiece.Forge the hydraulic cylinder body shape as shown in Figure 3.
Again with hydraulic cylinder body forging blank cool to room temperature → heat treatment in air → lathe machined → surface treatment → finished product
The whole die 9 of this example is made up of die tire 3 and internal mold 4, and die tire 3 is made by steel alloy, 2 ° ~ 20 ° of the gradients that combines with internal mold 4, and this example is preferably selected 10 °; Internal mold 4 is made by heat-resisting alloy mould steel, and this example is preferably selected the H13 forge hot and touched the tool steel.Internal mold 4 can be formed by 2 ~ 6, and this example is preferably selected three (trisections); 2 tensions of internal mold 4 usefulness upper cylinders.
In the present embodiment, every external diameter 89mm, long 512mm hydraulic cylinder body, production cost is than low 1.0～2 yuan of present technology.And eliminated the defective of weld seam leakage or sepage.
Embodiment 2 (being example still) with the hydraulic cylinder body of producing overall diameter 89mm:
Buy external diameter 89mm, the seamless pipe of wall thickness 6.5mm, the long 567mm of lathe blanking is heated to 1100 ℃ with the superaudio machine, puts on 200 tons of hydraulic presses, carries out closed-die forging with the closed die forging mould.
The closed-die forging course of work is: shown in Figure 6, after the start, hydraulic press is in reset condition, and operating personnel are put into the seamless pipe 5 that heats on the workbench; Step on floor push, the upwards work of following oil cylinder 8, inner core 7 penetrates in the seamless pipe 5, drives seamless pipe 5 and makes progress away; After seamless pipe 5 enters into die 9 bottoms, touch switch, cylinder 6 work (blocking inner core 7 glides), following oil cylinder 8 quit work master cylinder 1 work; When master cylinder 1 oil pressure reaches 18MPa, master cylinder 1 quit work (forging is finished); Master cylinder 1, cylinder 6 backhauls; When certain position was arrived in cylinder 6 backhauls, following oil cylinder 8 was worked downwards, to inner core, the 9 lubricated and coolings of whole die.Finish a working cycles, prepare the forging of second workpiece.
Again with hydraulic cylinder body forging blank cool to room temperature → heat treatment in air → lathe machined → surface treatment → finished product.
This routine whole die 9 is to be made by heat-resisting alloy mould steel, and the tool steel is touched in the preferred H13 forge hot of this example.0.1 ° ~ 5 ° these examples of dies cavity withdrawing pattern Dou degree are preferably selected 0.5 °.Forge the hydraulic cylinder body shape as shown in Figure 7
In the present embodiment, every external diameter 89mm, long 512mm hydraulic cylinder body, production cost is than low 0.6～1.2 yuan of present technology.And eliminated the defective of weld seam leakage or sepage.
Embodiment 3 (being example still) with the hydraulic cylinder body of producing overall diameter 89mm:
Buy external diameter 89mm, the seamless pipe of wall thickness 6.5mm, the long 567mm of band sawing machine blanking is heated to 1200 ℃ with medium frequency equipment, puts on 200 tons of hydraulic presses and carries out closed-die forging with the closed die forging mould.
The closed-die forging course of work is:
As shown in Figure 8, after the start, hydraulic press is in reset condition, and operating personnel are put into the seamless pipe 5 that heats on the workbench; Step on floor push, the upwards work of following oil cylinder 8, inner core 7 penetrates in the seamless pipe 5, drives seamless pipe 5 and makes progress away, enters two and opens die 10; When seamless pipe 5 enter two open die 10 bottoms after, touch switch, cylinder 6 work (blocking inner core 7 glides), oil cylinder 8 quits work down; Upper cylinder 2 work (clamp two and open die 10); Touch switch, master cylinder 1 work; When master cylinder 1 oil pressure reached 16MPa, closed-die forging was finished; Master cylinder 1, upper cylinder 2 and cylinder 6 backhauls; When certain position was arrived in cylinder 6 backhauls, following oil cylinder 8 was worked downwards, and inner core, two is opened the lubricated and cooling of internal mold, finished a working cycles, prepared the closed-die forging of second workpiece.(the following oil cylinder in this example also can replace with cylinder)
Again with hydraulic cylinder body forging blank cool to room temperature → heat treatment in air → lathe machined → surface treatment → finished product.
Two of this example is opened die 10 and is divided the semicircle mould equally by two and form, and clamps two semicircle moulds with upper cylinder 2.Divide the semicircle mould equally for two and made by heat-resisting alloy mould steel, this example is preferably selected the H13 forge hot and is touched the tool steel.Forge the hydraulic cylinder body shape as shown in Figure 3.
In the present embodiment, every external diameter 89mm, long 512mm hydraulic cylinder body, production cost is than low 0.9～1.8 yuan of present technology.And eliminated the defective of weld seam leakage or sepage.
Embodiment 4 (being example still) with the hydraulic cylinder body of producing overall diameter 89mm:
Buy the seamless pipe of external diameter 89mm wall thickness 6.5mm, the long 567mm of band sawing machine blanking is heated to 1150 ℃ with town gas, puts on 400 tons of punch presses and carries out closed-die forging with forging mold;
The closed-die forging course of work is: as shown in Figure 5, after the start, 400 tons of punch presses are in reset condition, and operating personnel are put into the seamless pipe 5 that heats on the workbench; Step on floor push, the upwards work of following oil cylinder 8, inner core 7 penetrates in the seamless pipe 5, drives seamless pipe 5 and makes progress away, enters four and opens internal mold; When seamless pipe 5 enter four open internal mold bottom after, touch switch, cylinder 6 work (blocking inner core 7 glides), upper cylinder 2 work (clamp four and open internal mold), oil cylinder 8 quits work down; Upper cylinder 2 work finish, touch switch, 400 tons of punch press work; Closed-die forging is finished; 400 tons of punch press backhauls, upper cylinder 2 and cylinder 6 backhauls; When certain position was arrived in cylinder 6 backhauls, following oil cylinder 8 was worked downwards, and inner core, four is opened the lubricated and cooling of internal mold, finished a working cycles, prepared the forging of second workpiece.
Again with hydraulic cylinder body forging blank cool to room temperature → heat treatment in air → lathe machined → surface treatment → finished product.
The whole die 9 of this example is made up of die tire 3 and internal mold 4, and die tire 3 is made by steel alloy, and 2 ° ~ 20 ° these examples of the gradient that combines with internal mold 4 are preferably selected 10 °; Internal mold 4 is made by heat-resisting alloy mould steel, and the tool steel is touched in the preferred H13 forge hot of this example.Internal mold 4 can be formed by 2 ~ 6, and this example is preferably selected four (quarterings); 2 tensions of internal mold 4 usefulness upper cylinders.
In the present embodiment, every external diameter 89mm, long 512mm hydraulic cylinder body, production cost is than low 1.0～2 yuan of present technology.Forge the hydraulic cylinder body shape as shown in Figure 3.And eliminated the defective of weld seam leakage or sepage.
Embodiment 5 (being example still) with the hydraulic cylinder body of producing overall diameter 89mm:
Buy external diameter 89mm, the seamless pipe of wall thickness 6.5mm, the long 567mm of band sawing machine blanking is heated to 1000 ℃ with natural gas, puts on 400 tons of punch presses and carries out closed-die forging with the closed die forging mould.
The closed-die forging course of work is: as shown in Figure 6, after the start, punch press is in reset condition, and operating personnel are put into the seamless pipe 5 that heats on the workbench; Step on floor push, the upwards work of following oil cylinder 8, inner core 7 penetrates in the seamless pipe 5, drives seamless pipe 5 and makes progress away; After seamless pipe 5 enters into die 9 bottoms, touch switch, cylinder 6 work (blocking inner core 7 glides), following oil cylinder 8 quit work 400 tons of punch press work; Closed-die forging is finished; 400 tons of punch press backhauls, cylinder 6 backhauls; When certain position was arrived in cylinder 6 backhauls, following oil cylinder 8 was worked downwards, to inner core 7, the 9 lubricated and coolings of whole die.Finish a working cycles, prepare the forging of second workpiece.
Again with hydraulic cylinder body forging blank cool to room temperature → heat treatment in air → lathe machined → surface treatment → finished product.
The whole die 9 of this example is to be made by heat-resisting alloy mould steel, and this example is preferably selected the H13 forge hot and touched the tool steel, and 0.1 ° ~ 5 ° these examples of dies cavity withdrawing pattern Dou degree are preferably selected 0.5 °.Forge the hydraulic cylinder body shape as shown in Figure 7
In the present embodiment, every external diameter 89mm, long 512mm hydraulic cylinder body, production cost is than low 0.6～1.2 yuan of present technology.And eliminated the defective of weld seam leakage or sepage.
Embodiment 6 (being example still) with the hydraulic cylinder body of producing overall diameter 89mm:
Buy external diameter 89mm, the seamless pipe of wall thickness 6.5mm, the long 567mm of band sawing machine blanking is heated to 1250 ℃ with High-frequency machine, puts on 400 tons of punch presses and carries out closed-die forging with the closed die forging mould.
The closed-die forging course of work is:
As shown in Figure 8, after the start, punch press is in reset condition, and operating personnel are put into the seamless pipe 5 that heats on the workbench; Step on floor push, the upwards work of following oil cylinder 8, inner core 7 penetrates in the seamless pipe 5, drives seamless pipe 5 and makes progress away, enters two and opens die 10; When seamless pipe 5 enter two open die 10 bottoms after, touch switch, upper cylinder 6 work (blocking inner core 7 glides), upper cylinder 2 work (clamp two and open die 10); Following oil cylinder 8 quits work; Upper cylinder 2 work finish, touch switch, punch press work; Closed-die forging is finished; 400 tons of punch press backhauls, upper cylinder 2 and cylinder 6 backhauls; When certain position was arrived in cylinder 6 backhauls, following oil cylinder 8 was worked downwards, and inner core 7, two die sinkings are lubricated and cooling, finished a working cycles, prepared the forging (the following oil cylinder 8 in this example also can replace with cylinder) of second workpiece.
Again with hydraulic cylinder body forging blank cool to room temperature → heat treatment in air → lathe machined → surface treatment → finished product.
Two of this example is opened die 10 and is divided the semicircle mould equally by two and form, and clamps two semicircle moulds with upper cylinder 2.Divide the semicircle mould equally for two and made by heat-resisting alloy mould steel, the tool steel is touched in the preferred H13 forge hot of this example.Forge the hydraulic cylinder body shape as shown in Figure 3.
In the present embodiment, every external diameter 89mm, long 512mm hydraulic cylinder body, production cost is than low 0.9～1.8 yuan of present technology.And eliminated the defective of weld seam leakage or sepage.
Embodiment 7 (being example still) with the hydraulic cylinder body of producing overall diameter 89mm:
Buy the seamless pipe of external diameter 89mm wall thickness 6.5mm, the long 567mm of band sawing machine blanking is heated to 1150 ℃ with High-frequency machine, puts on 400 tons of friction presses and carries out closed-die forging with forging mold.
The closed-die forging course of work is: as shown in Figure 5, after the start, 400 tons of friction presses are in reset condition, and operating personnel are put into the seamless pipe 5 that heats on the workbench; Step on floor push, the upwards work of following oil cylinder 8, inner core 7 penetrates in the seamless pipe 5, drives seamless pipe 5 and makes progress away, enters six and opens internal mold; When seamless pipe 5 enter six open internal mold bottom after, touch switch, cylinder 6 work (blocking inner core 7 glides), upper cylinder 2 work (clamp six and open internal mold), oil cylinder 8 quits work down; Upper cylinder 2 work finish, touch switch, 400 tons of friction press work, and closed-die forging is finished; 400 tons of friction press backhauls, upper cylinder 2 and cylinder 6 backhauls; When certain position was arrived in cylinder 6 backhauls, following oil cylinder 8 was worked downwards, and inner core, six is opened the lubricated and cooling of internal mold, finished a working cycles, prepared the forging of second workpiece.
Again with hydraulic cylinder body forging blank cool to room temperature → heat treatment in air → lathe machined → surface treatment → finished product.
The whole die 9 of this example is made up of die tire 3 and internal mold 4, and die tire 3 is made preferred 10 ° of 2 ° ~ 20 ° these examples of the gradient that combines with internal mold 4 by steel alloy; Internal mold 4 is made by heat-resisting alloy mould steel, and this example is preferably selected the H13 forge hot and touched the tool steel.Internal mold 4 can be formed by 2 ~ 6, and this example is preferably selected 6 (6 five equilibriums); Internal mold is strained with upper cylinder 2.
In the present embodiment, every external diameter 89mm oil cylinder, long 512mm hydraulic cylinder body, production cost is than low 1.0～2 yuan of present technology.And eliminated the defective of weld seam leakage or sepage.Forge the hydraulic cylinder body shape as shown in Figure 3.
Embodiment 8 (being example still) with the hydraulic cylinder body of producing overall diameter 89mm:
Buy external diameter 89mm, the seamless pipe of wall thickness 6.5mm, the long 567mm of band sawing machine blanking is heated to 1150 ℃ with High-frequency machine, puts on 400 tons of friction presses and carries out closed-die forging with the closed die forging mould.
The closed-die forging course of work is:
As shown in Figure 6, after the start, 400 tons of friction presses are in reset condition, and operating personnel are put into the seamless pipe 5 that heats on the workbench; Step on floor push, the upwards work of following oil cylinder 8, inner core 7 penetrates in the seamless pipe 5, drives seamless pipe 5 and makes progress away; After seamless pipe 5 enters into die 9 bottoms, touch switch, cylinder 6 work (blocking inner core 7 glides), following oil cylinder 8 quit work; 400 tons of friction press work; Closed-die forging is finished; 400 tons of friction press reversion, cylinder 6 backhauls; When certain position was arrived in cylinder 6 backhauls, following oil cylinder 8 was worked downwards, and die 9 and interior core are lubricated and cool off.Finish a working cycles, prepare the forging of second workpiece.
Again with hydraulic cylinder body forging blank cool to room temperature → heat treatment in air → lathe machined → surface treatment → finished product.
The whole die 9 of this example is to be made by heat-resisting alloy mould steel, and this example is preferably selected the H13 forge hot and touched the tool steel.Preferred 0.5 ° of 0.1 ° ~ 5 ° these examples of dies cavity withdrawing pattern Dou degree.Forge the hydraulic cylinder body shape as shown in Figure 7
In the present embodiment, every overall diameter 89mm oil cylinder, long 512mm hydraulic cylinder body, production cost is than low 0.6～1.2 yuan of present technology.And eliminated the defective of weld seam leakage or sepage.
Embodiment 9 (being example still) with the hydraulic cylinder body of producing overall diameter 89mm:
Buy external diameter 89mm, the seamless pipe of wall thickness 6.5mm, the long 567mm of band sawing machine blanking is heated to 1200 ℃ with High-frequency machine, puts on 400 tons of friction presses and carries out closed-die forging with the closed die forging mould.
The closed-die forging course of work is:
As shown in Figure 8, after the start, 400 tons of friction presses are in reset condition, and operating personnel are put into the seamless pipe 5 that heats on the workbench; Step on floor push, the upwards work of following oil cylinder 8, inner core 7 penetrates in the seamless pipe 5, drives seamless pipe 5 and makes progress away, enters two and opens die 10; When seamless pipe 5 enter two open die 10 bottoms after, touch switch, cylinder 6 work (blocking inner core 7 glides), upper cylinder 2 work (clamp two and open die 10); Following oil cylinder 8 quits work; Upper cylinder 2 work finish, touch switch, 400 tons of friction press work; Closed-die forging is finished; 400 tons of friction press backhauls; Upper cylinder 2 and cylinder 6 backhauls; When cylinder 6 backhauls when the certain position, following oil cylinder 8 is worked downwards, opens die 10 and interior core is lubricated and cooling to two, finishes a working cycles, prepares the forging (the following oil cylinder 8 in this example also can replace with cylinder) of second workpiece.
Again with hydraulic cylinder body forging blank cool to room temperature → heat treatment in air → lathe machined → surface treatment → finished product.
Two of this example is opened die 10 and is divided the semicircle mould equally by two and form, and clamps two semicircle moulds with upper cylinder 2.Divide the semicircle mould equally for two and made by heat-resisting alloy mould steel, this example is preferably selected the H13 forge hot and is touched the tool steel.The oil cylinder shape that closed-die forging goes out as shown in Figure 3.
In the present embodiment, every external diameter 89mm, long 512mm cylinder body, production cost is than low 0.9～1.8 yuan of present technology.And eliminated the defective of weld seam leakage or sepage.
Embodiment recited above is described preferred implementation of the present invention; 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 (3)
1. the production technology of a hydraulic cylinder body is characterized in that, may further comprise the steps:
A, purchase seamless pipe;
B, blanking;
C, need forging deformation partly to be heated to 900～1250 ℃ seamless pipe;
D, step c heated seamless tube is put into the forging equipment closed-die forging, forge the step of hydraulic cylinder body by the dress sealing ring;
E, with hydraulic cylinder body forging blank cool to room temperature in air of finishing in the steps d;
F, heat treatment;
G, lathe machined;
H, surface treatment;
I, finished product.
2. the production technology of hydraulic cylinder body according to claim 1 is characterized in that: adopt superaudio machine or medium frequency equipment or coal gas or natural gas or High-frequency machine heating when seamless pipe heats among the described step c.
3. the production technology of hydraulic cylinder body according to claim 1, it is characterized in that: the forging equipment in the described steps d is hydraulic press or friction press or punch press.
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| CNA2009100159074A CN101559470A (en) | 2009-05-26 | 2009-05-26 | Manufacturing technique of hydraulic cylinder body |
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| CNA2009100159074A CN101559470A (en) | 2009-05-26 | 2009-05-26 | Manufacturing technique of hydraulic cylinder body |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172768A (en) * | 2010-12-24 | 2011-09-07 | 湖北远翔液压锻造有限公司 | Forging process method for sblank of automobile transmission flange forgings |
| CN102284652A (en) * | 2011-05-19 | 2011-12-21 | 重庆顺财钢锹制造有限公司 | Process for processing steel spade by using waste iron rail |
| CN102935579A (en) * | 2012-11-01 | 2013-02-20 | 聊城五环机械有限公司 | Process method for manufacturing chain block guide wheel by adopting connected blank |
| CN103381460A (en) * | 2013-08-02 | 2013-11-06 | 武汉重工铸锻有限责任公司 | Method for forging production of oil cylinder with stepped holes by utilizing half moulding bed of riser-free steel ingot |
| CN104646577A (en) * | 2015-01-14 | 2015-05-27 | 重庆焱炼重型机械设备股份有限公司 | Process for forging cylinder body of hydraulic press |
| CN107598065A (en) * | 2017-10-23 | 2018-01-19 | 徐州市博威机械制造有限公司 | A kind of forging technology of motor body |
| CN110695281A (en) * | 2019-11-18 | 2020-01-17 | 大冶屹丰机械制造有限公司 | Die forging forming process of engine cylinder barrel |
| CN112122767A (en) * | 2020-09-01 | 2020-12-25 | 山东本图液压科技有限公司 | Integral step type multistage oil cylinder machining process |
| CN113441675A (en) * | 2021-06-15 | 2021-09-28 | 江苏海劭科技有限公司 | High-precision hydraulic cylinder barrel for radial cold forging and manufacturing method thereof |
-
2009
- 2009-05-26 CN CNA2009100159074A patent/CN101559470A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172768A (en) * | 2010-12-24 | 2011-09-07 | 湖北远翔液压锻造有限公司 | Forging process method for sblank of automobile transmission flange forgings |
| CN102284652A (en) * | 2011-05-19 | 2011-12-21 | 重庆顺财钢锹制造有限公司 | Process for processing steel spade by using waste iron rail |
| CN102935579A (en) * | 2012-11-01 | 2013-02-20 | 聊城五环机械有限公司 | Process method for manufacturing chain block guide wheel by adopting connected blank |
| CN102935579B (en) * | 2012-11-01 | 2015-08-19 | 聊城五环机械有限公司 | A kind of process adopting disjunctor blank to make chain block guide wheel |
| CN103381460A (en) * | 2013-08-02 | 2013-11-06 | 武汉重工铸锻有限责任公司 | Method for forging production of oil cylinder with stepped holes by utilizing half moulding bed of riser-free steel ingot |
| CN104646577A (en) * | 2015-01-14 | 2015-05-27 | 重庆焱炼重型机械设备股份有限公司 | Process for forging cylinder body of hydraulic press |
| CN107598065A (en) * | 2017-10-23 | 2018-01-19 | 徐州市博威机械制造有限公司 | A kind of forging technology of motor body |
| CN110695281A (en) * | 2019-11-18 | 2020-01-17 | 大冶屹丰机械制造有限公司 | Die forging forming process of engine cylinder barrel |
| CN112122767A (en) * | 2020-09-01 | 2020-12-25 | 山东本图液压科技有限公司 | Integral step type multistage oil cylinder machining process |
| CN113441675A (en) * | 2021-06-15 | 2021-09-28 | 江苏海劭科技有限公司 | High-precision hydraulic cylinder barrel for radial cold forging and manufacturing method thereof |
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