CN103706744A - Petroleum drill rod joint horizontal die forging technology and die forging device - Google Patents
Petroleum drill rod joint horizontal die forging technology and die forging device Download PDFInfo
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- CN103706744A CN103706744A CN201310754352.1A CN201310754352A CN103706744A CN 103706744 A CN103706744 A CN 103706744A CN 201310754352 A CN201310754352 A CN 201310754352A CN 103706744 A CN103706744 A CN 103706744A
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Abstract
The invention aims at providing a petroleum drill rod joint horizontal die forging technology and a die forging device. The petroleum drill rod joint horizontal die forging technology and the die forging device are used for solving the problem that an existing drill rod joint vertical die forging technology is low in machining efficiency, and due to the fact that the pattern draft exists, the utilization rate of raw materials is low. The petroleum drill rod joint horizontal die forging technology includes the following steps that firstly, blanking is performed; secondly, heating is performed, wherein a medium-frequency induction heating furnace is used for fast heating a bar to a temperature needed in forging a drill rod joint; thirdly, blank making is performed, a blank making device is used for extruding the bar into joint blank in an upset mode; fourthly, die forging is performed, wherein the die forging device is used for extruding the joint blank into the die forging joint; fifthly, punching is performed, a punching machine is used for punching off scraps of the die forging joint. The die forging device comprises a rack, an upper die is installed on the rack in a vertical sliding mode, and a lower die located below the upper die is fixedly installed on the rack. The petroleum drill rod joint horizontal die forging technology and the die forging device can be applied to the field of die forging of drill rod joints.
Description
Technical field
The present invention relates to a kind of tool joint die forging processing technology, also relate to a kind of tool joint die forging process equipment.
Background technology
Tool joint is the important part that connects to form of oil drilling tools, and tool joint is to material, and tissue and mechanical performance require very strict, and forging is used in the tool joint of most of specification.Most the adopted traditional vertical contour forging technique mode of tool joint producer.The tool joint of this explained hereafter has certain drawback, and working (machining) efficiency is low, and owing to there being pattern draft, utilization rate of raw materials is very low.
Summary of the invention
One of object of the present invention is to provide the horizontal contour forging technique of a kind of joint of petroleum drill rod, low to solve the vertical contour forging technique mode of existing tool joint working (machining) efficiency, and owing to there being pattern draft, the problem that utilization rate of raw materials is lower.
The embodiment of the present invention provides a kind of joint of petroleum drill rod horizontal contour forging technique, comprises the following steps: (1) blanking; (2) heating; Use Medium Frequency Induction Heating Furnace that bar is heated rapidly to and forges the required temperature of tool joint; (3) base, adopts blanking device that bar upsetting squeeze is become to joint blank; (4) die forging, adopts die forging device that joint blank is squeezed into die forging joint; (5) punching, is used perforating press that the gross weight of die forging joint is washed out.
Concrete, in described base step, first bar to be sent in the blank forming cavity of blanking mold, base top end presses down, and bar upsetting squeeze is become to joint blank, and then base top end is return, and under base, top ejects blanking mold by joint blank.
Concrete, in described die forging step, joint blank is sent on bed die, crank arm oil cylinder and the right side, a left side cranks arm that oil cylinder is cranked arm by a left side and crank arm in the right side drives mold to press down, make mold and bed die matched moulds form the tool joint forming cavity of left and right both ends open, and the left main forging drift of the main forging hydraulic oil cylinder driving of rear left pours from the left end opening of described tool joint forming cavity, the right main forging drift of right main forging hydraulic oil cylinder driving pours from the right-end openings of described tool joint forming cavity, until joint blank is instead squeezed and is full of whole tool joint forming cavity by left main forging drift and right main forging drift, then left main forging drift and right main forging drift are return initial point, crank arm oil cylinder and the right side, a left side cranks arm that oil cylinder is cranked arm by a left side and crank arm in the right side drives mold to rise, shaping mould welded joint is taken out from tool joint forming cavity.
Concrete, in described punching step, die forging joint is put into punching die, by Work-sheet pressing oil cylinder movement briquetting, contact with die forging joint, from top by die forging joint, compress, then by punching hydraulic oil cylinder driving drift, drift enters in die forging joint gross weight is wherein washed out from horizontal direction, finally by push rod hoist cylinder, moves push rod die forging joint is released from punching die.
Concrete, also be included in described punching step remaining temperature normalizing step afterwards, utilize die forging joint to forge rear remaining warm in described remaining warm normalizing step, close-packed arrays is put into normalizing van-type stove, in stove, slowly cool to uniform temperature and come out of the stove, then adopt air cooling mode cooling.
Two of object of the present invention is to provide a kind of die forging device of realizing the horizontal contour forging technique of above-mentioned joint of petroleum drill rod, low to solve in the vertical contour forging technique mode of existing tool joint die forging device working (machining) efficiency, the problem that utilization rate of raw materials is lower.
The embodiment of the present invention provides a kind of die forging device, described die forging device comprises frame, in described frame, slide up and down mold is installed, described mold is connected with mold hold-down devices, in described frame, be installed with the bed die that is positioned at described mold below, between described mold and described bed die, be provided with the tool joint forming cavity of left and right both ends open, the left side of described frame is horizontally installed with left main forging oil cylinder, the piston rod of described left main forging oil cylinder is provided with the left main forging drift that can pour from the left end opening of described tool joint forming cavity, the right side of described frame is horizontally installed with right main forging oil cylinder, the piston rod of described right main forging oil cylinder is provided with the right main forging drift that can pour from the right-end openings of described tool joint forming cavity.
Concrete, described mold hold-down devices is included in a left side of the left side of described frame the installing oil cylinder of cranking arm, the right side of described frame is provided with the right side oil cylinder of cranking arm, cranking arm and between the piston rod of oil cylinder and the upper surface of described mold, be hinged with a left side and crank arm in a described left side, cranks arm and between the piston rod of oil cylinder and the upper surface of described mold, be hinged with the right side and crank arm in the described right side.
Concrete, in described frame, be also provided with and be positioned at the crank arm hinged seat of oil cylinder and the right oil cylinder top of cranking arm of a described left side, cranking arm and be hinged with left connecting rod between the piston rod of oil cylinder and described hinged seat in a described left side, cranks arm and be hinged with right connecting rod between the piston rod of oil cylinder and described hinged seat in the described right side.
The horizontal contour forging technique of a kind of joint of petroleum drill rod and die forging device that the embodiment of the present invention provides, save material greatly, without pattern draft, can material-saving 20% left and right, and the extrusion modling again of first closed mould, forging moulding is full, makes die forging joint formed precision high.And die forging joint inherent quality is good, adopt extrusion modling, metal flows fully in die cavity, and the deformation time is longer, and the inherent quality density of forging is high, and power attenuation is little, energy-conservation; Die forging device adopts mechanical type clamping to crank arm by the hydraulic oil cylinder driving left side of cranking arm, a left side, crank arm and drive mold to carry out matched moulds in the hydraulic oil cylinder driving right side of cranking arm, the right side, horizontal direction adopts the left main forging drift of left main forging hydraulic oil cylinder driving, the right main forging drift of right main forging hydraulic oil cylinder driving, input power is 180KW only, be significantly less than the power of the about 300KW of same category of device in industry, environmental protection, forges noise little; Adopt horizontal punching technique, drift enters in die forging joint gross weight is wherein washed out from horizontal direction, and continuous production is good, and efficiency is high; Add thermal recovery heating in medium frequency, realize environmental protection and forge.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of die forging device in the embodiment of the present invention;
Fig. 2 is the structural representation of blanking mold in the embodiment of the present invention;
Fig. 3 is the structural representation of punching die in the embodiment of the present invention;
Fig. 4 is the structural representation of die forging male joint in the embodiment of the present invention;
Fig. 5 is the structural representation of die forging female joint in the embodiment of the present invention.
The specific embodiment
The vertical contour forging technique mode of existing tool joint working (machining) efficiency is low, and owing to there is pattern draft, utilization rate of raw materials is lower.The embodiment of the present invention provides the horizontal contour forging technique of a kind of joint of petroleum drill rod and die forging device.
The horizontal contour forging technique of joint of petroleum drill rod, comprises the following steps:
(1) blanking; Use the accurate blanking of band sawing machine, blanking procedure is the first operation of die forging production process, is also very important operation, and cutting stock weight must guarantee even unification, the continuous uniformity of guarantee die forging joint final molding quality like this, it is stable that the whole contour forging technique of guarantee is carried out.Here except requiring band sawing machine stable performance, raw material are directly spent and must be guaranteed to meet the requirements, and also want strict implement technology for blanking, thereby guarantee the even unification of blanking during blanking.
(2) heating; Use 750KW Medium Frequency Induction Heating Furnace that bar is heated rapidly to and forges the required temperature of tool joint, for the bar of different size, select the heating-up temperature of different range, to guarantee the uniformity of bar temperature simultaneously, be conducive to next step base and die-forging forming.
(3) base, adopts blanking device that bar upsetting squeeze is become to joint blank; As shown in Figure 2, described blanking device comprises base seat 1, on described base seat 1, blanking mold 2 is installed, in described blanking mold 2, be provided with blank forming cavity 3, the upper end of described blanking mold 2 is provided with the material mouth 4 communicating with described blank forming cavity 3, the lower end of described blanking mold 2 is provided with lower top via hole, in the via hole of described lower top, be set with the lower top 5 that is positioned at described blank forming cavity 3 bottoms, described blanking device also comprises base top end 6, and described base top end 6 is connected with top end lifting hydraulic cylinder.In described base step, first bar is sent in the blank forming cavity 3 of blanking mold 2, base top end 6 presses down, and bar upsetting squeeze is become to joint blank, and then base top end 6 is return, and comes directly towards 5 joint blank is ejected to blanking mold 2 under base.
(4) die forging, adopts die forging device that joint blank is squeezed into die forging joint, as shown in Figure 1, described die forging device comprises frame 7, in described frame 7, slide up and down mold 8 is installed, described mold 8 is connected with mold hold-down devices, in described frame 7, be installed with the bed die 9 that is positioned at described mold 8 belows, between described mold 8 and described bed die 9, be provided with the tool joint forming cavity 10 of left and right both ends open, the left side of described frame 7 is horizontally installed with left main forging oil cylinder 11, the piston rod of described left main forging oil cylinder 11 is provided with the left main forging drift 12 that can pour from the left end opening of described tool joint forming cavity 10, the right side of described frame 7 is horizontally installed with right main forging oil cylinder 13, the piston rod of described right main forging oil cylinder 13 is provided with the right main forging drift 14 that can pour from the right-end openings of described tool joint forming cavity 10.
Described mold hold-down devices is included in a left side of the left side of described frame 7 the installing oil cylinder 15 of cranking arm, the right side of described frame 7 is provided with the right side oil cylinder 16 of cranking arm, crank arm and between the piston rod of oil cylinder 15 and the upper surface of described mold 8, be hinged with a left side and crank arm 17 in a described left side, crank arm and between the piston rod of oil cylinder 16 and the upper surface of described mold 8, be hinged with the right side and crank arm 19 in the described right side, in described frame 7, be also provided with and be positioned at the crank arm hinged seat 20 of oil cylinder 15 and right oil cylinder 16 tops of cranking arm of a described left side, crank arm and be hinged with left connecting rod 21 between the piston rod of oil cylinder 15 and described hinged seat 20 in a described left side, crank arm and be hinged with right connecting rod 22 between the piston rod of oil cylinder 16 and described hinged seat 20 in the described right side.
In described die forging step, joint blank is sent on bed die 9, a left side crank arm oil cylinder 15 and the right side crank arm oil cylinder 16 by a left side crank arm 17 and the right side 19 drive molds 8 of cranking arm press down, make mold 8 and bed die 9 matched moulds form the tool joint forming cavity 10 of left and right both ends open, and the main forging oil cylinder 11 of rear left drives left main forging drift 12 to pour from the left end opening of described tool joint forming cavity 10, right main forging oil cylinder 13 drives right main forging drift 14 to pour from the right-end openings of described tool joint forming cavity 10, until joint blank is full of whole tool joint forming cavity 10 by left main forging drift 12 and anti-the squeezing of right main forging drift 14, then left main forging drift 12 is return initial point with right main forging drift 14, a left side crank arm oil cylinder 15 and the right side crank arm oil cylinder 16 by a left side crank arm 17 and the right side 19 drive molds 8 of cranking arm rise, shaping mould welded joint is taken out from tool joint forming cavity 10.Die forging device cranks arm 17 by the hydraulic oil cylinder driving left side of cranking arm, a left side; crank arm oil cylinder 16 of the right side drives the right sides 19 drive molds of cranking arm; adopted mechanical clamping; and in prior art, all adopt fluid pressure type clamping system; mechanical type matched moulds advantage is greatly to save electric energy; equipment power of motor is only 180KW, and all the other producer's powers of motor are at least more than 300KW.
(5) punching, is used perforating press that the gross weight of die forging joint is washed out; As shown in Figure 3, described perforating press comprises punching frame 23, the punching die 24 of placing mold welded joint is installed in described punching frame 23, the Work-sheet pressing oil cylinder 25 that is positioned at described punching die 24 tops is installed in described frame 23, the briquetting 26 that is pressed on die forging joint upper surface is installed on the piston rod of described Work-sheet pressing oil cylinder 25, the punching oil cylinder 27 that die forging joint gross weight is washed out that is positioned at described punching die 24 sides is installed in described punching frame 23, and the piston rod of described punching oil cylinder 27 is connected with drift 28.
The drawing mechanism from ejecting in punching die 24 by die forging joint is also installed in described punching frame 23.
Described drawing mechanism comprises and slides up and down the push rod 29 being arranged in described punching frame 23, and described punching die 24 is provided with the via hole passing through for described push rod 29, and described push rod 29 is connected with push rod hoist cylinder 30.
In described punching step, die forging joint is put into punching die 24, by Work-sheet pressing oil cylinder 25, moving briquetting 26 contacts with die forging joint 31, from top by die forging joint 31, compress, then by punching oil cylinder 27, drive drift 28, drift 28 enters in die forging joint 31 gross weight wherein 32 is washed out from horizontal direction, die forging joint is divided into die forging male joint and die forging female joint, Fig. 4 and Fig. 5 have shown the position of gross weight 32 in die forging male joint and die forging female joint, finally by push rod hoist cylinder 30, move push rod 29 die forging joint is released from punching die 24.Adopt horizontal punching technique, drift 28 enters in die forging joint 31 gross weight wherein 32 is washed out from horizontal direction, and continuous production is good, and efficiency is high.
(6) remaining warm normalizing utilizes die forging joint to forge rear remaining temperature in described remaining warm normalizing step, and close-packed arrays is put into normalizing van-type stove, slowly cools to uniform temperature and come out of the stove in stove, then adopts air cooling mode cooling.
Adopt horizontal die forging, have advantages of that geomery is accurate, structure property is good, have that streamline distribution is good, to reduce material consumption, production environmental protection and production efficiency high.Compare every butt joint at least 5KG that on average saves material with traditional vertical contour forging technique.Can obtain great economic benefit.
The extrusion modling again of first closed mould, forging moulding is full, makes die forging joint formed precision high.And die forging joint inherent quality is good, adopt extrusion modling, metal flows fully in die cavity, and the deformation time is longer, and the inherent quality density of forging is high, and power attenuation is little, energy-conservation; Die forging device adopts mechanical type clamping to crank arm 17 by the hydraulic oil cylinder driving left side of cranking arm, a left side, crank arm oil cylinder 16 of the right side drives the right sides 19 drive molds of cranking arm to carry out matched moulds, horizontal direction adopts left main forging oil cylinder 11 to drive left main forging drift, right main forging oil cylinder 13 drives right main forging drift 14, input power is 180KW only, be significantly less than the power of the about 300KW of same category of device in industry, environmental protection, forges noise little; Adopt horizontal punching technique, drift enters in die forging joint gross weight is wherein washed out from horizontal direction, and continuous production is good, and efficiency is high; Add thermal recovery heating in medium frequency, realize environmental protection and forge.
Comprise the above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (8)
1. the horizontal contour forging technique of joint of petroleum drill rod, is characterized in that, comprises the following steps:
(1) blanking;
(2) heating, is used Medium Frequency Induction Heating Furnace that bar is heated rapidly to and forges the required temperature of tool joint;
(3) base, adopts blanking device that bar upsetting squeeze is become to joint blank;
(4) die forging, adopts die forging device that joint blank is squeezed into die forging joint;
(5) punching, is used perforating press that the gross weight of die forging joint is washed out.
2. the horizontal contour forging technique of joint of petroleum drill rod as claimed in claim 1, it is characterized in that: in described base step, first bar is sent in the blank forming cavity of blanking mold, base top end presses down, bar upsetting squeeze is become to joint blank, then base top end is return, and under base, top ejects blanking mold by joint blank.
3. the horizontal contour forging technique of joint of petroleum drill rod as claimed in claim 1, it is characterized in that: in described die forging step, joint blank is sent on bed die, crank arm oil cylinder and the right side, a left side cranks arm that oil cylinder is cranked arm by a left side and crank arm in the right side drives mold to press down, make mold and bed die matched moulds form the tool joint forming cavity of left and right both ends open, and the left main forging drift of the main forging hydraulic oil cylinder driving of rear left pours from the left end opening of described tool joint forming cavity, the right main forging drift of right main forging hydraulic oil cylinder driving pours from the right-end openings of described tool joint forming cavity, until joint blank is instead squeezed and is full of whole tool joint forming cavity by left main forging drift and right main forging drift, then left main forging drift and right main forging drift are return initial point, crank arm oil cylinder and the right side, a left side cranks arm that oil cylinder is cranked arm by a left side and crank arm in the right side drives mold to rise, shaping mould welded joint is taken out from tool joint forming cavity.
4. the horizontal contour forging technique of joint of petroleum drill rod as claimed in claim 1, it is characterized in that: in described punching step, die forging joint is put into punching die, by Work-sheet pressing oil cylinder movement briquetting, contact with die forging joint, from top by die forging joint, compress, then by punching hydraulic oil cylinder driving drift, drift enters in die forging joint gross weight is wherein washed out from horizontal direction, finally by push rod hoist cylinder, moves push rod die forging joint is released from punching die.
5. the horizontal contour forging technique of joint of petroleum drill rod as claimed in claim 1, it is characterized in that: be also included in described punching step remaining temperature normalizing step afterwards, remaining temperature after utilizing die forging joint to forge in described remaining warm normalizing step, close-packed arrays is put into normalizing van-type stove, in stove, slowly cool to uniform temperature and come out of the stove, then adopt air cooling mode cooling.
6. a die forging device of realizing the horizontal contour forging technique of joint of petroleum drill rod described in claim 1, it is characterized in that: described die forging device comprises frame, in described frame, slide up and down mold is installed, described mold is connected with mold hold-down devices, in described frame, be installed with the bed die that is positioned at described mold below, between described mold and described bed die, be provided with the tool joint forming cavity of left and right both ends open, the left side of described frame is horizontally installed with left main forging oil cylinder, the piston rod of described left main forging oil cylinder is provided with the left main forging drift that can pour from the left end opening of described tool joint forming cavity, the right side of described frame is horizontally installed with right main forging oil cylinder, the piston rod of described right main forging oil cylinder is provided with the right main forging drift that can pour from the right-end openings of described tool joint forming cavity.
7. die forging device as claimed in claim 6, it is characterized in that: described mold hold-down devices is included in a left side of the left side of described frame the installing oil cylinder of cranking arm, the right side of described frame is provided with the right side oil cylinder of cranking arm, cranking arm and between the piston rod of oil cylinder and the upper surface of described mold, be hinged with a left side and crank arm in a described left side, cranks arm and between the piston rod of oil cylinder and the upper surface of described mold, be hinged with the right side and crank arm in the described right side.
8. die forging device as claimed in claim 7, it is characterized in that: in described frame, be also provided with and be positioned at the crank arm hinged seat of oil cylinder and the right oil cylinder top of cranking arm of a described left side, cranking arm and be hinged with left connecting rod between the piston rod of oil cylinder and described hinged seat in a described left side, cranks arm and be hinged with right connecting rod between the piston rod of oil cylinder and described hinged seat in the described right side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310754352.1A CN103706744A (en) | 2013-12-31 | 2013-12-31 | Petroleum drill rod joint horizontal die forging technology and die forging device |
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| CN201310754352.1A CN103706744A (en) | 2013-12-31 | 2013-12-31 | Petroleum drill rod joint horizontal die forging technology and die forging device |
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Cited By (8)
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| CN103962801A (en) * | 2014-04-25 | 2014-08-06 | 上海工程技术大学 | Forming process of petroleum drill rod joint |
| CN104624715A (en) * | 2015-02-05 | 2015-05-20 | 江苏常宝钢管股份有限公司 | Tube end upsetting molding method of super-short oil tube pup joint |
| CN108515134A (en) * | 2018-04-12 | 2018-09-11 | 二十二冶集团精密锻造有限公司 | The shaping dies and manufacturing process of asymmetric four-way valve body |
| CN108672644A (en) * | 2018-05-04 | 2018-10-19 | 杭州前进锻造有限公司 | The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box |
| CN113231583A (en) * | 2021-04-19 | 2021-08-10 | 上海长特锻造有限公司 | Forging forming process of joint blank |
| CN114535480A (en) * | 2022-03-02 | 2022-05-27 | 长春驰枫汽车零部件有限公司 | Extrusion processing method for counteractive rod joint |
| CN119159023A (en) * | 2024-10-11 | 2024-12-20 | 中国第二重型机械集团德阳万航模锻有限责任公司 | A precision forging method and forging die for a large high-temperature alloy rotor adapter shaft |
| CN119407094A (en) * | 2024-10-22 | 2025-02-11 | 中国第二重型机械集团德阳万航模锻有限责任公司 | A short-process and low-cost preparation method for 300M steel landing gear sleeve forgings |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103962801A (en) * | 2014-04-25 | 2014-08-06 | 上海工程技术大学 | Forming process of petroleum drill rod joint |
| CN103962801B (en) * | 2014-04-25 | 2017-01-04 | 上海工程技术大学 | A kind of forming technology of joint of petroleum drill rod |
| CN104624715A (en) * | 2015-02-05 | 2015-05-20 | 江苏常宝钢管股份有限公司 | Tube end upsetting molding method of super-short oil tube pup joint |
| CN108515134A (en) * | 2018-04-12 | 2018-09-11 | 二十二冶集团精密锻造有限公司 | The shaping dies and manufacturing process of asymmetric four-way valve body |
| CN108672644A (en) * | 2018-05-04 | 2018-10-19 | 杭州前进锻造有限公司 | The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box |
| CN108672644B (en) * | 2018-05-04 | 2019-11-19 | 杭州前进锻造有限公司 | The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box |
| CN113231583A (en) * | 2021-04-19 | 2021-08-10 | 上海长特锻造有限公司 | Forging forming process of joint blank |
| CN113231583B (en) * | 2021-04-19 | 2022-08-16 | 上海长特锻造有限公司 | Forging forming process of joint blank |
| CN114535480A (en) * | 2022-03-02 | 2022-05-27 | 长春驰枫汽车零部件有限公司 | Extrusion processing method for counteractive rod joint |
| CN119159023A (en) * | 2024-10-11 | 2024-12-20 | 中国第二重型机械集团德阳万航模锻有限责任公司 | A precision forging method and forging die for a large high-temperature alloy rotor adapter shaft |
| CN119407094A (en) * | 2024-10-22 | 2025-02-11 | 中国第二重型机械集团德阳万航模锻有限责任公司 | A short-process and low-cost preparation method for 300M steel landing gear sleeve forgings |
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Application publication date: 20140409 |