CN1067836A - The explosive expansion joint method of porous plunges pump body hole wall bushing pipe - Google Patents
The explosive expansion joint method of porous plunges pump body hole wall bushing pipe Download PDFInfo
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- CN1067836A CN1067836A CN 92104714 CN92104714A CN1067836A CN 1067836 A CN1067836 A CN 1067836A CN 92104714 CN92104714 CN 92104714 CN 92104714 A CN92104714 A CN 92104714A CN 1067836 A CN1067836 A CN 1067836A
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- bushing pipe
- explosive
- hole wall
- porous
- body hole
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Abstract
A kind of explosive expansion joint method of porous plunger pump cylinder body hole wall bushing pipe.In cylinder bore, put cover the copper alloy bushing pipe of explosive be housed, the pressure that produces when utilizing explosive charge with bushing pipe securely expanded joint in cylinder bore.Hinder bushing pipe for preventing that explosive charge from carving, between bushing pipe and explosive, protective layer is housed.Because the pressure that produces during explosive charge can be up to several ten thousand atmospheric pressure, thereby very high order of contact is arranged between cylinder body hole wall and the bushing pipe, can bear very high shearing strength.Have small investment, output, quality height, production scale are not subjected to the advantage of appointed condition restriction.
Description
The invention belongs to explosion processing, be specially adapted to the processing of pump housing hole wall bushing pipe.
The porous plunger displacement pump is the vitals in the Hydraulic Power Transmission System, and this pump housing process technology is for introducing West Germany's technology at present.
This technology adopts vacuum pressing and casting solid copper-metal core body in the cylinder bore of pump, uses bore process then, and solid core is processed into copper-metal bushing pipe on the hole wall.The advantage of this patent is effective combination that can guarantee between copper-lead lined pipe and the pump housing hole wall.Satisfy high-revolving needs, its major defect is that waste of raw materials is big, and still accompanies bubble unavoidably in the casting, causes and scraps, and can reach 80% percent defective when serious, and at 40～50% percent defective, optimal cases also still has 20% percent defective usually.Substituting technology at present mainly is pressure sintering, and with the cylinder body heating, brass bush soaks cooling in liquid nitrogen, then bushing pipe is pressed in the cylinder bore.But effect is undesirable in the practice, and when the pump housing moved, bushing pipe was taken out of by work (post) plug easily, causes the stopping production accident.
The object of the present invention is to provide a kind of porous plunger pump cylinder body hole wall and lining pipe method, realize reducing cost, improve output and quality by expanded joint.
At the problem that prior art exists, the present invention adopts the method for explosive expansion joint bushing pipe in cylinder bore, makes bushing pipe and cylinder body be coupled to one, has both saved material, has guaranteed quality again.
Accompanying drawing is a porous plunger displacement pump bushing pipe assembly drawing.
Now in conjunction with the accompanying drawings the present invention is introduced in detail: before the bushing pipe expanded joint; should guarantee the cleaning on cylinder bore (4) and bushing pipe (3) surface; in bushing pipe (3), place explosive (6); the protection tube (2) that prevents to hinder the time break bushing pipe (3) is housed between explosive (6) and bushing pipe (3), and protection tube (2) can adopt soft dense materials such as plastics, rubber, papery.Ignite the interior explosive (6) of bushing pipe (3), the pressure that utilizes blast to produce makes the tight expanded joint of bushing pipe (3) and cylinder bore (4).The pressure that produces for preventing to explode causes the distortion of all the other holes of cylinder body and cylinder body, installs additional and its plug that closely contacts (7) and inertia module (5) outside all the other holes (being adjacent holes at least) and cylinder body.The general mode of igniting that adopts in the enforcement by the hole powder charge, can guarantee to detonate accurate synchronous the time, the also mode that can adopt porous to ignite simultaneously.Explosive payload can be determined according to factors such as aperture, pipe thicknesses in the bushing pipe.
One embodiment of the present of invention are porous plunger displacement pump shown in the drawings; its cylinder body (4) is the blind hole through roughing Φ 26.5 * 70; bushing pipe (3) is Φ 25 * 2; the manganese brass pipe of long 70mm; bushing pipe (3) liner is gone into the protection tube (2) of Φ 21 * 3; adorn a stopper (8) in protection tube (2) bottom, the 3 gram AR explosives of packing in the protection tube (2), and insert detonator (1).Insert steel core bar (7) in all the other holes, cylinder body is placed inertia module (5) outward.Detonating primer (1), this hole are that expanded joint finishes, and adopt then with quadrat method by the hole expanded joint.Test result is the adhesion (anti-axial shearing force)＞2 tons between bushing pipe (3) and the cylinder body behind the expanded joint, is the twice of designing requirement.The garden degree error＜0.1mm in hole, upper and lower aperture deviation ≈ 0.2mm is all within chipping allowance 0.35～0.60mm.
Adopt expanding joint method of the present invention, the sliding detonation ripple is from bottom to top propagated from inside to outside during expanded joint.This moment, the dynamic pressure of contact-making surface of cylinder inner bore surface and bushing pipe can reach interatomic contact up to several ten thousand atmospheric pressure, thereby all spaces will all be squeezed into, thereby high order of contact is arranged, and automatically air was extruded.Compared with prior art can save material greatly, improve the quality of products.
Need not special equipment in force, have small investment, the output height, scale is not subjected to the advantage of appointed condition restriction.
Claims (3)
1, a kind of expanding joint method of porous plunges pump body hole wall bushing pipe; it is fixed copper alloy bushing pipe in plunges pump body; it is characterized in that placing explosive in bushing pipe, between explosive and bushing pipe protective layer is housed, the pressure that ignition charge utilization blast produces makes cylinder body and bushing pipe reach fluid-tight engagement.
2, method according to claim 1 is characterized in that protective layer adopts soft dense materials such as plastics, rubber, papery.
3, according to claim 1 and 2 described methods, it is characterized in that ignition charge before, in all the other holes and cylinder body outside, the device and its plug that closely contacts and inertia module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104714 CN1067836A (en) | 1992-06-19 | 1992-06-19 | The explosive expansion joint method of porous plunges pump body hole wall bushing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104714 CN1067836A (en) | 1992-06-19 | 1992-06-19 | The explosive expansion joint method of porous plunges pump body hole wall bushing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1067836A true CN1067836A (en) | 1993-01-13 |
Family
ID=4940947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92104714 Pending CN1067836A (en) | 1992-06-19 | 1992-06-19 | The explosive expansion joint method of porous plunges pump body hole wall bushing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1067836A (en) |
-
1992
- 1992-06-19 CN CN 92104714 patent/CN1067836A/en active Pending
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Legal Events
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |