CN103909384A - Cold extrusion molding process of drill pipe connecting sleeve - Google Patents

Cold extrusion molding process of drill pipe connecting sleeve Download PDF

Info

Publication number
CN103909384A
CN103909384A CN201410110957.1A CN201410110957A CN103909384A CN 103909384 A CN103909384 A CN 103909384A CN 201410110957 A CN201410110957 A CN 201410110957A CN 103909384 A CN103909384 A CN 103909384A
Authority
CN
China
Prior art keywords
namely
round bar
adapter sleeve
cold extrusion
steel round
Prior art date
Application number
CN201410110957.1A
Other languages
Chinese (zh)
Inventor
陈泽
殷宏
朱胜
沈建华
张进
李德山
Original Assignee
大丰市中德精锻件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大丰市中德精锻件有限公司 filed Critical 大丰市中德精锻件有限公司
Priority to CN201410110957.1A priority Critical patent/CN103909384A/en
Publication of CN103909384A publication Critical patent/CN103909384A/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/04Couplings; joints between rod or the like and bit or between rod and rod or the like

Abstract

The invention discloses a cold extrusion molding process of a drill pipe connecting sleeve. The cold extrusion molding process includes the steps of blanking, namely selecting a middle-carbon alloyed steel round bar as a connecting sleeve body; spheroidizing annealing, namely heating the middle-carbon alloyed steel round bar to the temperature ranging from 730 DEG C to 750 DEG C and keeping warm for 120 minutes, then reducing the temperature to 680 DEG C and keeping warm for 300 minutes prior to reducing the temperature to 550 DEG C to be discharged; sheet stamping, namely turning surface defects of the middle-carbon alloyed steel round bar and boring; phosphating saponification process, namely performing surface phosphating and saponification process; reverse cold extrusion, namely reversely extruding a hexagonal hole at the room temperature, and borrowing reverse extrusion pressure to extrude the conical hole downwardly to formation; phosphating saponification process, namely performing surface phosphating and saponification process; cold extrusion reducing, namely reducing the outside diameter of the hexagonal hole at the room temperature, and lengthening the depth of the hexagonal hole; machining, namely drilling an air hole and turning the outer circle and two end surfaces of the middle-carbon alloyed steel round bar to obtain the drill pipe connecting sleeve of products.

Description

Drilling rod adapter sleeve cold extruding formation process

Technical field

The present invention relates to metal material forging and molding technology, relate in particular to a kind of drilling rod adapter sleeve cold extruding formation process.

Background technology

At present, while construction in coal mine, need to use drilling rod to carry out bore operation.Between drilling rod, connect by drilling rod adapter sleeve.Existing drilling rod adapter sleeve is in the time connecting two ends drilling rod, and easily mineralization pressure chamber, is connected and fixed effect bad, easily occurs becoming flexible, and affects the service life of drilling rod.Meanwhile, existing drilling rod adapter sleeve is all to adopt hot forging CNC milling machine processing cutting hexagonal hole and taper hole and cylindrical, and processing cost is high, and production efficiency is low, high material consumption, due to use be expensive steel alloy, this processing method cost is high.

Summary of the invention

Technical problem to be solved by this invention is: the drilling rod adapter sleeve cold extruding formation process that a kind of production efficiency is high is provided.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is: drilling rod adapter sleeve cold extruding formation process, comprises the steps: blanking: select medium carbon alloy steel round bar as adapter sleeve body; Spheroidizing: medium carbon alloy steel round bar is heated to 730 ℃~750 ℃ insulations 120 minutes, then is down to 680 ℃ of insulations and is down to again 550 ℃ after 300 minutes and comes out of the stove; Base: medium carbon alloy steel pole truck is gone to blemish boring; Phosphatization saponification processing: alramenting, saponification processing; Cold extrusion is instead squeezed: the anti-hexagonal hole that squeezes under room temperature state, and use backward extrusion pressure simultaneously and make downward round taper hole extrusion molding; Phosphatization saponification processing: alramenting, saponification processing; Cold extrusion tube reducing: reduce the outside diameter of hexagonal hole under room temperature state, make hexagon hole depth lengthen simultaneously; Machined: drill through cylindrical and both ends of the surface that pore, car remove medium carbon alloy steel round bar, obtain product drilling rod adapter sleeve.

Advantage of the present invention is: above-mentioned drilling rod adapter sleeve cold extruding formation process, adopt cold extrusion technology to process drilling rod adapter sleeve, reduce noble metal machining man-hour, enhance productivity, save noble metal dosage, there is not pressure in the drilling rod adapter sleeve processing in the process that connects jointed rod, be connected and fixed effective, extend the service life of drilling rod, simple in structure, easy to process.

Accompanying drawing explanation

Fig. 1 is the structural representation that the drilling rod adapter sleeve that processes of drilling rod adapter sleeve cold extruding formation process of the present invention cuts state.

In figure: 1, adapter sleeve body, 2, hexagonal hole, 3, round taper hole, 4, passage.

The specific embodiment

Describe in detail particular content of the present invention below in conjunction with the drawings and specific embodiments.Drilling rod adapter sleeve cold extruding formation process, comprise the steps: blanking: select medium carbon alloy steel round bar as adapter sleeve body 1, be applicable to drilling tool body material, also be suitable for cold-extrusion technology, its performance: intensity, quenching degree are high, and wearability is good, good toughness, quenching distortion is little, has high creep strength and creep rupture strength when high temperature; Spheroidizing: medium carbon alloy steel round bar is heated to 730 ℃~750 ℃ insulations 120 minutes, then is down to 680 ℃ of insulations and is down to again 550 ℃ after 300 minutes and comes out of the stove; Base: go blemish boring to reach the requirement of size and weight precision on medium carbon alloy steel pole truck; Phosphatization saponification processing: alramenting, saponification processing; Cold extrusion is instead squeezed: the anti-hexagonal hole 2 that squeezes under room temperature state, use backward extrusion pressure simultaneously and make downward round taper hole 3 extrusion moldings, guarantee that taper hole taper error is not more than 0.1 degree, and guarantee forging smooth surface, roughness Ra≤1.6 μ m, guarantees to coordinate solid and reliable with tool's power system; Phosphatization saponification processing: alramenting, saponification processing, solve blank surface due to phospholeum film, while making cold extrusion, protect working surface, guarantee that workpiece surface roughness is good, not mold damage; Cold extrusion tube reducing: reduce the outside diameter of hexagonal hole 2 under room temperature state, make hexagonal hole 2 deeply lengthen simultaneously, the length of side reaches product drawing requirement, guarantees forging smooth surface, roughness Ra≤1.6 μ m; Machined: drill through pore 4, car goes the cylindrical of medium carbon alloy steel round bar and both ends of the surface to reach customer drawings requirement, obtains product drilling rod adapter sleeve.

The drilling rod connecting jacket structure that in utilization, drilling rod adapter sleeve cold extruding formation process processes comprises: adapter sleeve body 1, be provided with the hexagonal hole 2 cooperatively interacting with drilling rod one end in one end of described connector body 1, be provided with the round taper hole 3 cooperatively interacting with the drilling rod other end at the other end of described connector body 1, be provided with passage 4 at the middle part of described connector body 1, between described hexagonal hole 2 and round taper hole 3, be interconnected by passage 4.

Above-mentioned drilling rod adapter sleeve cold extruding formation process, adopt cold extrusion technology to process drilling rod adapter sleeve, reduce noble metal machining man-hour, enhance productivity, save noble metal dosage, there is not pressure in the drilling rod adapter sleeve processing in the process that connects jointed rod, be connected and fixed effective, extend the service life of drilling rod, simple in structure, easy to process.

Claims (1)

1. drilling rod adapter sleeve cold extruding formation process, is characterized in that: comprise the steps: blanking: select medium carbon alloy steel round bar as adapter sleeve body (1); Spheroidizing: medium carbon alloy steel round bar is heated to 730 ℃~750 ℃ insulations 120 minutes, then is down to 680 ℃ of insulations and is down to again 550 ℃ after 300 minutes and comes out of the stove; Base: medium carbon alloy steel pole truck is gone to blemish boring; Phosphatization saponification processing: alramenting, saponification processing; Cold extrusion is instead squeezed: the anti-hexagonal hole (2) that squeezes under room temperature state, and use backward extrusion pressure simultaneously and make downward round taper hole (3) extrusion molding; Phosphatization saponification processing: alramenting, saponification processing; Cold extrusion tube reducing: reduce the outside diameter of hexagonal hole (2) under room temperature state, make hexagonal hole (2) deeply lengthen simultaneously; Machined: drill through cylindrical and both ends of the surface that pore (4), car remove medium carbon alloy steel round bar, obtain product drilling rod adapter sleeve.
CN201410110957.1A 2014-03-24 2014-03-24 Cold extrusion molding process of drill pipe connecting sleeve CN103909384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410110957.1A CN103909384A (en) 2014-03-24 2014-03-24 Cold extrusion molding process of drill pipe connecting sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410110957.1A CN103909384A (en) 2014-03-24 2014-03-24 Cold extrusion molding process of drill pipe connecting sleeve

Publications (1)

Publication Number Publication Date
CN103909384A true CN103909384A (en) 2014-07-09

Family

ID=51035550

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410110957.1A CN103909384A (en) 2014-03-24 2014-03-24 Cold extrusion molding process of drill pipe connecting sleeve

Country Status (1)

Country Link
CN (1) CN103909384A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104588977A (en) * 2014-11-25 2015-05-06 吴中区长桥诚惠机械加工厂 Machining technology for connecting sleeve
CN110640414A (en) * 2019-09-29 2020-01-03 中煤科工集团重庆研究院有限公司 Processing technology of directional drill rod

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192167A (en) * 1978-03-23 1980-03-11 Laeis-Werke Aktiengesellschaft Process and apparatus for upsetting pipe ends
AT385220B (en) * 1984-12-06 1988-03-10 Ver Edelstahlwerke Ag Method for manufacturing drill stems
CN2917849Y (en) * 2006-07-07 2007-07-04 唐建军 Oil drill pipe joint die
CN101100027A (en) * 2006-07-07 2008-01-09 唐建军 Petroleum drilling rod joint extrusion forming technology method
CN103302456A (en) * 2013-06-13 2013-09-18 大丰市中德精锻件有限公司 Precise forming process of deep-hole button bit
CN103624502A (en) * 2013-12-04 2014-03-12 江苏威鹰机械有限公司 Cold-forging plastic molding technology of brake piston
CN103624205A (en) * 2013-12-04 2014-03-12 江苏威鹰机械有限公司 Cold-forging plastic molding technology of precisely-forged brake threaded pipe component

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192167A (en) * 1978-03-23 1980-03-11 Laeis-Werke Aktiengesellschaft Process and apparatus for upsetting pipe ends
AT385220B (en) * 1984-12-06 1988-03-10 Ver Edelstahlwerke Ag Method for manufacturing drill stems
CN2917849Y (en) * 2006-07-07 2007-07-04 唐建军 Oil drill pipe joint die
CN101100027A (en) * 2006-07-07 2008-01-09 唐建军 Petroleum drilling rod joint extrusion forming technology method
CN103302456A (en) * 2013-06-13 2013-09-18 大丰市中德精锻件有限公司 Precise forming process of deep-hole button bit
CN103624502A (en) * 2013-12-04 2014-03-12 江苏威鹰机械有限公司 Cold-forging plastic molding technology of brake piston
CN103624205A (en) * 2013-12-04 2014-03-12 江苏威鹰机械有限公司 Cold-forging plastic molding technology of precisely-forged brake threaded pipe component

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104588977A (en) * 2014-11-25 2015-05-06 吴中区长桥诚惠机械加工厂 Machining technology for connecting sleeve
CN110640414A (en) * 2019-09-29 2020-01-03 中煤科工集团重庆研究院有限公司 Processing technology of directional drill rod

Similar Documents

Publication Publication Date Title
CN102615223B (en) The method of rolling two trapezoid cross section flange ring forging parts simultaneously
CN101342566B (en) Integral cold forging technique for angular wheel shaft
CN104148558B (en) The production method of T-shaped ring-type forge piece blank reheating in SB564 UNS N06690 alloy large-size
CN101549361B (en) Rare-earth magnesium alloy seamless thin wall tubule hot-extrusion method and its specialized mold
CN102873239B (en) Full-closed multi-way integral die-forging forming process for large-size valve bodies
CN102350615B (en) Shunt blocking forming method for star-shaped sleeve
CN103464992B (en) Ratchet wheel of park gear of car transmission production technology
CN101579804A (en) Integral forming method of large size thin-walled titanium alloy cylindrical part without welding line
CN106862475B (en) The cold upsetting production technique of interior hexagonal studs blank
CN104117547B (en) A kind of Warm Extrusion gear stick continuous extrusion die and processing method thereof
CN101214510B (en) Blind hole internal gear precision forming method and internal tooth forming mold
CN105013908B (en) For the assembling die and manufacturing process of the shaping of flange pipe nipple
CN105252230B (en) Machining process for inclined tee
CN103894436A (en) Reciprocating extruding device and machining method of reinforced magnesium alloy tube
CN102909237B (en) A kind of preparation method of TA18 thick-wall tube
CN103921065A (en) Manufacturing method of vehicle seamless steel tubes
CN101695739B (en) Forging process of large tee and large skew tee
CN101100027A (en) Petroleum drilling rod joint extrusion forming technology method
CN104139147B (en) The forging method of T-shaped ring-type forge piece blank reheating in SB564 UNS N06690 alloy large-size
CN102350622B (en) Production process of straight tooth gear of oil pump
CN101422861A (en) Accurate forming method of special-shape deep-hole type parts
CN101576125A (en) Method for manufacturing outer ring of tapered roller bearing
CN204108005U (en) A kind of amorphous alloy pipe extrusion molding apparatus
CN102513791A (en) Technical method for forming semi-axle housing tube for large-diameter flange
CN102319808B (en) Hot stamping mould for nut

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140709

C02 Deemed withdrawal of patent application after publication (patent law 2001)