CN103290325B - Perforating bullet body powder metallurgy billet and cold extrusion technology method - Google Patents
Perforating bullet body powder metallurgy billet and cold extrusion technology method Download PDFInfo
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- CN103290325B CN103290325B CN201310250053.4A CN201310250053A CN103290325B CN 103290325 B CN103290325 B CN 103290325B CN 201310250053 A CN201310250053 A CN 201310250053A CN 103290325 B CN103290325 B CN 103290325B
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- Prior art keywords
- powder
- perforating bullet
- blank
- cold extrusion
- sintering
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 15
- 238000000641 cold extrusion Methods 0.000 title claims abstract description 12
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 238000005245 sintering Methods 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 238000007493 shaping process Methods 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 9
- 239000011812 mixed powder Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 7
- 239000000956 alloy Substances 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000000320 mechanical mixture Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000754 repressing effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Perforating bullet body powder metallurgy billet and cold extrusion technology method belong to oil exploitation instrument; This blank is made up of by Different Weight compatibility iron powder, copper powder, nickel powder, graphite powder, molybdenum powder and binding agent, by the mechanical mixture of above-mentioned raw materials, compression and sintering are made body blank, carry out extruding the body obtaining net shape to body blank entirety by cold extrusion again, obtain perforating bullet body through sintering and accurate compacting shaping; The present invention adopts the powder metallurgy prescription of low-alloy content and cold extruding technique processing body, has material prescription novelty, scientific and reasonable, body good mechanical property, perforation wear that dark value is large, safe and reliable, production technology is simple, cost is low, improves perforating job efficiency, the feature of reduction cost for oil production.
Description
Technical field
The invention belongs to oil exploitation instrument, relate generally to downhole perforation bullet airframe material and the body forming and machining method of the use of a kind of oilfield exploitation.
Background technology
Oil field perforation bullet is a kind of for improving the downhole perforation instrument that oil extraction in oil field efficiency uses.Body is the critical component of perforating bullet, and Main Function strengthens perforating bullet side direction detonation wave momentum, improves the kinetic energy of metal jet, delay and reduce the interference of rarefaction wave to metal jet, ensure perforating depth.Practice shows, body intensity more high perforation bullet to wear dark value larger, therefore raising body intensity is that one of dark effective way worn by raising perforating bullet.Traditional body processing method mainly contains machining and two kinds of methods are processed in cold extrusion.Due to body structure more complicated, machining cost is high, and production efficiency is low, can not meet needs of production, although adopt cold extruding technique to improve production efficiency, production cost is reduced relatively, but airframe material is selected to be very limited, at present can only with 20
#steel manufactures body by cold extrusion, and 20
#steel bomb body mechanical performance is lower, and perforation wears dark instability, and after projectile explosive, chip size is comparatively large, card well accident very easily occurs, increases fishing cost.For solving above-mentioned conventional art Problems existing, Heilongjiang Machinery Industry Institute have developed a kind of perforating bullet body and method for production of powdered metallurgical material, because the method mainly relies on interpolation powder metallurgy element and resintering to strengthen matrix and performance, therefore its powder metallurgy prescription have employed high alloy content proportioning, make body by repressing and re-sintering technique, the powder metallurgy body density of finished product is less than 7.3g/cm
3, body performance need improves.
Summary of the invention
Object of the present invention is exactly for above-mentioned prior art Problems existing, research and develop a kind of new perforating bullet body powder metallurgy billet and cold extrusion technology method, reach the object put forward elastomeric performance, ensure that perforation is worn deeply, reduce production and processing operation, reduce body manufacturing cost.
The object of the present invention is achieved like this: perforating bullet body powder metallurgy billet by iron powder, copper powder, nickel powder, graphite powder, molybdenum powder and binding agent by weight compatibility form, shared by each composition, percentage by weight is: copper powder 0.3-0.9%, nickel powder 0.3-0.9%, graphite powder 0.4-0.7%, molybdenum powder 0.3-0.9%, binding agent 0.5-0.9%, surplus is iron powder.
A kind of perforating bullet body cold extrusion technology method as above-mentioned formula: iron powder, copper powder, nickel powder, molybdenum powder, graphite powder and binding agent are weighed respectively by formula, is prepared into mixed-powder through mechanical batch mixing; Mixed-powder is put into powder forming mould compressing, pressing pressure is 600-800MPa, and makes the body blank with some strength, sintering temperature 1000-1100 DEG C through sintering, and body blank pressed density is 7.1-7.2g/cm
3, insulation 1-2 hour; Then carry out monolithic extrudedly making it that plastic deformation occur to elasticity blank by cold extrusion, total squeeze pressure is 280-320 ton, obtains the body of net shape; Finally the body of net shape is sintered and accurate compacting shaping, sintering temperature 1100-1200 DEG C, temperature retention time 1-2 hour; Be met the perforating bullet body of mechanical property requirements and dimensional accuracy, body density is greater than 7.5g/cm
3.
The present invention adopted the Simulations of Powder Metallurgy Compaction method of low-alloy content to obtain an effigurate body powder batch of the tool designed in advance before this, the body powder batch of cold extruding technique to low-alloy content formula is adopted to carry out extrusion molding again, make body powder batch generation directed flow and vast scale plastic deformation, improve the global density of body powder batch; And by powder metallurgy sintered technology, alloying element fully being spread, the structure and properties of strengthening airframe material, obtains the powder metallurgy body with high density and high strength; Simultaneously by controlling distribution and the form of body mesopore to the adjustment of sintering process parameter, make the fragment after powder projectile explosive more tiny, avoid card well accident to occur.The present invention can an extrusion molding, breach traditional elastomeric cold-extrusion technology and need twice extrusion molding and the restriction in materials application, simultaneously also breach the restriction of existing powder metallurgy body in density, have that material prescription is scientific and reasonable, body mechanical performance is high, perforation wears that dark value is large, safe and reliable, production technology is easy, cost is low, perforating job efficiency can be improved, the feature of reduction cost for oil production.
Accompanying drawing explanation
Fig. 1, Fig. 2 are two kinds of perforating bullet powders metallurgical body blank structure schematic diagrames;
Fig. 3 is perforating bullet body structure schematic diagram.
Detailed description of the invention
Give an actual example below and describe the present invention.
Take copper powder 6 kilograms, nickel powder 6 kilograms, graphite powder 5 kilograms, molybdenum powder 6 kilograms, binding agent 7 kilograms, iron powder 970 kilograms, amount to 1000 kilograms for subsequent use, the percentage that each composition accounts for gross weight is followed successively by 0.6%, 0.6%, 0.5%, 0.6%, 0.7% and 97%.Iron particle size is less than 200 orders, and copper powder, nickel powder, graphite powder, molybdenum powder and binding agent granularity are less than 300 orders.Add man-hour, put into batch mixer mix 1 hour by preparing powder for subsequent use under 60 revs/min of rotating speeds, be prepared into mixed-powder; Mixed-powder is compressing by mould by body weight weighing, sintering makes body blank, and pressing pressure is 600-800MPa, and blank pressed density is 7.1-7.2g/cm
3, sintering temperature is 1000---1100 DEG C, and insulation 1-2 hour; Carry out cold-pressing deformation to the body blank entirety after sintering and improve density, and sintering obtains the body of net shape again, total squeeze pressure is 280-320 ton, and sintering temperature is 1100-1200 DEG C, temperature retention time 1-2 hour, and body density is greater than 7.5g/cm
3, finally precision truing is carried out to body, is met the body of mechanical performance and dimension precision requirement.
Claims (1)
1. a perforating bullet body powder metallurgy billet cold extrusion technology method, it is characterized in that: described powder metallurgy billet by iron powder, copper powder, nickel powder, graphite powder, molybdenum powder and binding agent by weight compatibility form, shared by each composition, percentage by weight is: copper powder 0.3-0.9%, nickel powder 0.3-0.9%, graphite powder 0.4-0.7%, molybdenum powder 0.3-0.9%, binding agent 0.5-0.9%, surplus is iron powder; Iron powder, copper powder, nickel powder, molybdenum powder, graphite powder and binding agent are weighed respectively by formula, is prepared into mixed-powder through mechanical batch mixing; Mixed-powder is put into powder forming mould compressing, pressing pressure is 600-800MPa, and makes the body blank with some strength, sintering temperature 1000-1100 DEG C through sintering, and body blank pressed density is 7.1-7.2g/cm
3, insulation 1-2 hour; Then carry out monolithic extrudedly making it that plastic deformation occur to elasticity blank by cold extrusion, total squeeze pressure is 280-320 ton, obtains the body of net shape; Finally the body of net shape is sintered and accurate compacting shaping, sintering temperature 1100-1200 DEG C, temperature retention time 1-2 hour; Be met the perforating bullet body of mechanical property requirements and dimensional accuracy, body density is greater than 7.5g/cm
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310250053.4A CN103290325B (en) | 2013-06-21 | 2013-06-21 | Perforating bullet body powder metallurgy billet and cold extrusion technology method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310250053.4A CN103290325B (en) | 2013-06-21 | 2013-06-21 | Perforating bullet body powder metallurgy billet and cold extrusion technology method |
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| Publication Number | Publication Date |
|---|---|
| CN103290325A CN103290325A (en) | 2013-09-11 |
| CN103290325B true CN103290325B (en) | 2016-03-02 |
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| CN201310250053.4A Expired - Fee Related CN103290325B (en) | 2013-06-21 | 2013-06-21 | Perforating bullet body powder metallurgy billet and cold extrusion technology method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104014798B (en) * | 2014-05-19 | 2017-01-18 | 陕西华夏粉末冶金有限责任公司 | Method for manufacturing petroleum perforating bullet powder metallurgy fragile cartridge case |
| CN104148553A (en) * | 2014-06-17 | 2014-11-19 | 宁波安拓实业有限公司 | Manufacturing method of perforation head blank piece |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4338713A (en) * | 1978-03-17 | 1982-07-13 | Jet Research Center, Inc. | Method of manufacture of powdered metal casing |
| CN101509100A (en) * | 2009-03-26 | 2009-08-19 | 黑龙江省机械科学研究院 | Oil field perforating bullet body powder metallurgy material and perforating bullet body manufacturing method |
| CN102091780A (en) * | 2011-01-19 | 2011-06-15 | 大庆石油管理局 | Composition of powder metallurgical perforating charge shell material, professional die and manufacturing method of the powder metallurgical perforating charge shell material |
-
2013
- 2013-06-21 CN CN201310250053.4A patent/CN103290325B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4338713A (en) * | 1978-03-17 | 1982-07-13 | Jet Research Center, Inc. | Method of manufacture of powdered metal casing |
| CN101509100A (en) * | 2009-03-26 | 2009-08-19 | 黑龙江省机械科学研究院 | Oil field perforating bullet body powder metallurgy material and perforating bullet body manufacturing method |
| CN102091780A (en) * | 2011-01-19 | 2011-06-15 | 大庆石油管理局 | Composition of powder metallurgical perforating charge shell material, professional die and manufacturing method of the powder metallurgical perforating charge shell material |
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| CN103290325A (en) | 2013-09-11 |
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Granted publication date: 20160302 |