CN102019336B - Die forging shaping technology specially used for manufacturing petroleum drilling machine elevator movable wing plates - Google Patents

Die forging shaping technology specially used for manufacturing petroleum drilling machine elevator movable wing plates Download PDF

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Publication number
CN102019336B
CN102019336B CN 201010545110 CN201010545110A CN102019336B CN 102019336 B CN102019336 B CN 102019336B CN 201010545110 CN201010545110 CN 201010545110 CN 201010545110 A CN201010545110 A CN 201010545110A CN 102019336 B CN102019336 B CN 102019336B
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China
Prior art keywords
forging
die
movable wing
cut
impression
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CN 201010545110
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Chinese (zh)
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CN102019336A (en
Inventor
钱少伦
管子弘
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宝鼎重工股份有限公司
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Publication of CN102019336A publication Critical patent/CN102019336A/en
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Abstract

The invention relates to a die forging shaping technology specially used for manufacturing petroleum drilling machine elevator movable wing plates and comprises the steps of: in dependence on the die forging weight of a petroleum drilling machine elevator movable wing plate, selecting a rectangular billet with a weight 15 percentage more than that of the forging, placing the billet to a furnace to heat to a starting forging temperature; placing the billet to a shaping mode cavity of a hammer forging die, forging once or more than once until the up and down mold surfaces are closed; placing the forged and shaped forging to the female die cutting edge of a cut off die, starting a trimming press, placing a punch on the forging to be cut, pushing the forging to be cut into the female die to resect flashes; the resected forging falling into the die holder bottom and being pushed into material frames. The invention has the advantages that the forging die and cut off die designed can reduce the initial allowance of die forgings to a weight only about 15.4 percent of that of the forgings, which can substantially save material fee, labour and energy; besides the invention has a novel, simple and unique structure design and a good die forging effect.

Description

A kind of technique of oil rig elevator movable wing plate die forging shaping
Technical field
The present invention relates to a kind of technique of making the oil rig elevator movable wing plate die forging shaping that is specifically designed to, belong to contour forging technique and make the field.
Background technology
<wing plate〉be the strength member on the oil rig elevator parts, forge and to form by structural alloy steel (42CrMo) and (see accompanying drawing 3-1~3-3).Because particularity and the complexity of design of part, traditional Forging Technology only is that part is simplified to a simple hexahedron, its weak point is: about 55 kilograms the part of weight after the machining, its forge weight (is seen accompanying drawing 4-1~4-2) but up to 149 kilograms, forging blank weight is 2.7 times of pts wt unexpectedly, not only utilization rate of raw materials is low, and machining efficient is low, energy consumption is high.
Summary of the invention
Purpose of design: avoid the weak point in the background technology, the movable wing plate forging part that is forged by die forging has approached the contour shape of part as far as possible, has reduced to greatest extent position and the allowance of machining.
Design: in order to realize above-mentioned purpose of design.1, the forging structure is carried out technological correction and drawn rational forging part figure: the angle of adjusting the forging die joint, eliminate the drop of die joint, to reach the purpose of the level offsetting power that produces in the balance die forging process, must carry out technological correction to satisfy the condition that forges of die forging to forging for this reason.Briefly, the unfavorable variation-forging that remedies exactly the draft angle that the adjustment owing to the die joint angle causes cannot depanning by originally can depanning becoming, but makes later on the forging still smoothly depanning that becomes forging being carried out technologic correction.So process at all without detriment to the overall structure of forging and overcome various unfavorable factors listed above fully, this part is forged by traditional open die forging change by the die-forging forming reality and reliable that becomes.2, the design of mould take the specification requirement that forges smoothly and reach forging of satisfying forging as prerequisite, must guarantee safe and reliable in the sufficient intensity of mould and life-span and the production process simultaneously.The application is take above-mentioned theory as the basis, designed forging die (edger (Fig. 2-1~2-4) on the trimming hydraulic machine of Fig. 1-1~1-3) and the 10000KN that is complementary with it of 10t hammer die forging.3, the choose reasonable of original blank shape and specification all can produce important impact for shaping and the full level of impression, the reasonable layout of metal streamline, the uniformity whether an amount of and that distribute of overlap of forging.Forge through examination, this process choice has been selected a kind of blank of square-section of suitable dimensions.
The basic working procedure of this process implementing is: blanking-heating-descaling-die forging-side cut-Re shaping-cooling-intermediate survey and the burr of polishing-forging after-baking (normalizing)-second heat treatment (modified-quenching+tempering)-cleaning-final inspection (comprising forging surface quality, dimensional tolerance, Non-Destructive Testing and mechanical test)-delivery.Heat treatment: by strict specification of heat treatment, implement first to forge after-baking-normalizing, carry out thereafter the second heat treatment-modifier treatment (quenching+tempering), to satisfy the mechanical performance requirement under the forging duty.
Technical scheme: a kind of contour forging technique for the shaping of die forging oil rig elevator movable wing plate, preparation before the die forging:
⑴ carry out technological correction and draw rational forging part figure the forging structure: by adjusting the angle of die joint, to reach the purpose of the level offsetting power that produces in the balance die forging process, and by forging has been carried out technologic correction, make the smooth depanning of forging;
⑵ hammer forging die: the die joint two ends of forging die are at same plane, a minute mould transition face that consists of is arc, impression is divided into roughly close up and down two parts of volume, the smooth distribution when guaranteeing that metal is subjected to the hammering distortion in impression up and down with flow, the final shaping meets the forging shape of drawing requirement;
⑶ edger: the work cutting edge of die is the profile of a sealing in the edger, and the profile of the overlap band of it and oil rig elevator movable wing plate forging die joint matches, with guarantee its at work can be accurately and efficiently with the cutting burrs of forging; The edger convex mould be in the mold work process with the part of transmission of pressure.The profile of the part of the upper die of the impression of punch and oil rig elevator movable wing plate forging matches, in order to avoid forging is damaged by it in the side cut process.For making punch can enter die to finish the disengaging of overlap from the forging, be provided with the contour shape that is complementary with cutting edge of die around it, and have certain gap with cutting edge of die.
Die forging:
⑴ select weight to insert to be heated in the stove greater than the rectangle steel billet of this forge weight 15% and forge the beginning temperature according to the weight of oil rig elevator movable wing plate forging part;
⑵ then insert it in shaping impression of the upper forging die of hammer, forges once or once, makes that the forging die upper and lower mould is closed to be got final product;
⑶ be put into the forging of die-forging forming on the cutting edge of die of edger, then opens clipping press, punch acted on the forging of being cut edge and with it push die cutting burrs, cut overlap
Forging falls into the mould bases bottom, then is pushed in the material frame, is deposited in thereafter somewhere, workshop air cooling and forges after-baking and modifier treatment.
The present invention compares with background technology, the one, adopt the designed forging die of the application and edger that the machine-finish allowance of forging part is down to and only be about 15.4% of forge weight, Master Cost is greatly saved, and the saving of the machining man-hour that thereupon brings and the aspects such as the energy that is associated, equipment thereof can't measure especially, and its economic benefit is very remarkable; The 2nd, structural design is novel, simple, unique, die forging is effective.
Description of drawings
Fig. 1-the 1st, the main TV structure schematic diagram of forging die.
Fig. 1-2 is the plan structure schematic diagram of Fig. 1-1.
Fig. 1-the 3rd, the side-looking structural representation of Fig. 1-1.
Fig. 2-the 1st, the structural representation of trim die.
Fig. 2-the 2nd, the plan structure schematic diagram of trim die.
Fig. 2-the 3rd, the structural representation of side cut punch.
Fig. 2-the 4th, the plan structure schematic diagram of side cut punch.
Fig. 3-the 1st, the main TV structure schematic diagram of background technology.
Fig. 3-the 2nd, the side-looking structural representation of background technology.
Fig. 3-the 3rd, the plan structure schematic diagram of background technology.
Fig. 4-the 1st is the main TV structure schematic diagram of hexahedral open die forgings figure after simplifying.
Fig. 4-the 2nd is the plan structure schematic diagram of hexahedral open die forgings figure after simplifying.
Fig. 5 is the forging die structural representation of background technology, and the die joint two ends of forging consist of very large drop (104.4mm) among the figure.
The specific embodiment
Embodiment 1: with reference to accompanying drawing 1-1~2-4.A kind of contour forging technique for the shaping of die forging oil rig elevator movable wing plate, preparation before the die forging:
⑴ carry out technological correction and draw rational forging part figure the forging structure: by adjusting the angle of die joint, eliminate the drop of die joint, reaching the purpose of the level offsetting power that produces in the balance die forging process, and by forging has been carried out technologic correction, make the smooth depanning of forging;
⑵ hammer forging die: the die joint two ends of forging die are at same plane, a minute mould transition face that consists of is arc, impression is divided into roughly close up and down two parts of volume, the reasonable distribution when guaranteeing that metal is subjected to the hammering distortion in impression up and down with flow, the final shaping meets the forging shape of drawing requirement;
⑶ edger: the work cutting edge of die seals in the edger, and the overlap belt profile of it and oil rig elevator movable wing plate forging die joint matches, with guarantee its at work can be accurately and efficiently with the cutting burrs of forging; The edger convex mould be in the mold work process with the part of transmission of pressure.The profile of the part of the upper die of the impression of punch and oil rig elevator movable wing plate forging must match, in order to avoid make forging damaged by it in the side cut process.For making punch can enter die to finish the disengaging of overlap from the forging, be provided with the profile that is complementary with cutting edge of die around it, and have certain gap with cutting edge of die.
Die forging:
⑴ select weight greater than this forge weight according to the weight of oil rig elevator movable wing plate forging part
15% rectangle steel billet is inserted and is heated to initial forging temperature in the stove;
⑵ then insert it in shaping impression of the upper forging die of hammer, forges once or once, makes that the forging die upper and lower mould is closed to be got final product;
⑶ be put into the forging of die-forging forming on the cutting edge of die of edger, then open clipping press, punch is acted on the forging of being cut edge and with it push die cutting burrs, the forging of cut overlap falls into the mould bases bottom, then be pushed in the material frame, be deposited in thereafter somewhere, workshop air cooling and forge after-baking and modifier treatment.
The cambered surface radius of impression die joint is R180mm on the described hammer forging die, and the cambered surface radius of lower impression die joint is R220mm.
That is to say, can find out from accompanying drawing 3-1~3-3, by the adjustment to the forging part die joint angle of background technology, eliminated the drop of die joint, reached the purpose that is equilibrated at the level offsetting power that produces in the die forging process, and the unfavorable variation-forging of the draft angle that causes for the adjustment that remedies owing to the die joint angle cannot depanning by originally can depanning becoming, then the forging drawing that forging has been carried out technologic correction and drawn, make the forging still smoothly depanning that becomes, for continuable condition has been created in the design of next step forging die.
Can find out from accompanying drawing 1-1~1-3, the novel forging die that designs by the angle of adjusting the forging die joint has been eliminated the drop of die joint effectively, reached the purpose that is equilibrated at the level offsetting power that produces in the die forging deformation process, 4 corner locks of design this moment on forging die only are the effect of performance location when upper and lower mould hits in the mold work process, and the upper and lower mould that causes owing to various foeign elements when working with correcting equipment offsets.Should be noted that, buckle structure in above-mentioned and attached illustrated in Figure 5, the offsetting power of the powerful horizontal direction that causes owing to the very large drop of die joint have to design thick thick fore shaft with it the structure of balance be different at nature and role, nonetheless, the effect of latter's performance may not be effectively desirable, and there is a larger potential safety hazard, non-must not then not getting.
Can find out from accompanying drawing 2-1~2-4, based on the requirement of forging process structure and design of forging die, design the edger on the trimming hydraulic machine of the 10000KN that is complementary with it.
The design of mould is take forging drawing as foundation with the basis, take the specification requirement that forges smoothly and reach forging of satisfying forging as prerequisite, must guarantee simultaneously safe and reliable in the sufficient intensity of mould and life-span and the production process, above theory is the guiding theory of the present embodiment.
Be worth should be mentioned that: in the process implementing process, the choose reasonable of original blank shape and specification all can produce important impact for shaping and the full level of impression, the reasonable layout of metal streamline, the uniformity whether an amount of and that distribute of overlap of forging.Forge through examination, this process choice has been selected a kind of blank of square-section of suitable dimensions.
The basic working procedure of this process implementing is: the second heat treatment quenching and tempering after normalizing heat treatment-forging after blanking-heating-descaling-die forging-side cut-Re shaping-cooling-intermediate survey and the burr-forging of polishing, quenching+tempering-cleaning-final inspection (comprising forging surface quality, dimensional tolerance, form and position tolerance, Non-Destructive Testing and mechanical test)-delivery.
Be not difficult to find out, (Fig. 3-1~3-3), die joint is broken line, turning point orthodrome transition (Fig. 3-1~3-3 and Fig. 5) if keep the original configuration state of part fully.As shown in Figure 5, the drop of die joint is 104.4 mm (cold forging spare die joint drop is 103.83mm), in order to be equilibrated at the offsetting power of the horizontal direction that produces in the die forging process, must design powerful snap close, even if but like this, because its offsetting power is so huge, the probability that snap close is broken in the course of the work is very large, it will cause forging die short-lived and lost efficacy; And huge offsetting power will make forging produce the offsetting tolerance that is above standard and requires, and also can bring adverse influence to equipment simultaneously, also can bring hidden danger to production safety.For edger, normally the carrying out of the location when the cutting edge state of such forging die joint and the existence of horizontal component are unfavorable for then that forging is cut edge and side cut operation; You also can find when designing the side cut punch, therefore cause the local die wall of punch very thin, can't guarantee that it has the side cut power that enough intensity is come transmission equipment, and punch is therefore and rapidly deformation annealing inefficacy also.
What need to understand is: although the various embodiments described above are to the mentality of designing of the present invention detailed text description of contrasting; but these text descriptions; just the simple text of mentality of designing of the present invention is described; rather than to the restriction of mentality of designing of the present invention; any combination, increase or modification that does not exceed mentality of designing of the present invention all falls within the scope of protection of the present invention.

Claims (2)

1. technique that is used for the oil rig elevator movable wing plate die forging shaping is characterized in that: preparation before the die forging:
⑴ carry out technological correction and draw rational forging part figure the forging part structure, by adjusting the angle of die joint, eliminate the drop of die joint, to reach the level offsetting power in the balance die forging process, and by forging is carried out technologic correction, make smoothly depanning of forging;
⑵ forging die: the die joint two ends of forging die are at same plane, a minute mould transition face that consists of is arc, impression is divided into roughly close up and down two parts of volume, the smooth distribution when guaranteeing that metal is subjected to the hammering distortion in impression up and down with flow, the final shaping meets the forging shape of drawing requirement;
⑶ edger: the work cutting edge of die is the profile of a sealing in the edger, and the profile of the overlap band of it and oil rig elevator movable wing plate forging die joint matches, with guarantee its at work can be accurately and efficiently with the cutting burrs of forging; The edger convex mould be in the mold work process with the part of transmission of pressure, the profile of the part of the upper die of the impression of punch and oil rig elevator movable wing plate forging matches, in order to avoid forging is damaged by it in the side cut process, for making punch can enter die to finish the disengaging of overlap from the forging, be provided with the contour shape that is complementary with cutting edge of die around it, and have certain gap with cutting edge of die;
Die forging:
⑴ select weight to insert greater than the rectangle steel billet of this forge weight 15% and be heated to initial forging temperature in the stove according to the weight of oil rig elevator movable wing plate forging part;
⑵ then insert it in shaping impression of forging die, forges once or once, makes that the forging die upper and lower mould is closed to be got final product;
⑶ be put into the forging of die-forging forming on the cutting edge of die of edger, then open clipping press, punch is acted on the forging of being cut edge and with it push die cutting burrs, the forging of cut overlap falls into the mould bases bottom, then be pushed in the material frame, be deposited in thereafter somewhere, workshop air cooling and forge after-baking and modifier treatment.
2. the technique for the oil rig elevator movable wing plate die forging shaping according to claim 1, it is characterized in that: the die joint two ends of described forging die are at same plane, a minute mould transition face that consists of is arc, the cambered surface radius of impression die joint is R180mm on the forging die, and the cambered surface radius of lower impression die joint is R220mm.
CN 201010545110 2010-11-16 2010-11-16 Die forging shaping technology specially used for manufacturing petroleum drilling machine elevator movable wing plates CN102019336B (en)

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Publication number Priority date Publication date Assignee Title
CN103100592A (en) * 2012-12-08 2013-05-15 无锡透平叶片有限公司 Installation structure of edge cutting die
CN106270331B (en) * 2016-08-31 2018-07-10 宝鸡石油机械有限责任公司 A kind of free forging method of petroleum drilling and mining lock tongue body

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Publication number Priority date Publication date Assignee Title
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CN1861314A (en) * 2005-05-10 2006-11-15 南阳二机石油装备(集团)有限公司 Integral forging method for mfg. petroleum double-arm lifting-ring
CN2871060Y (en) * 2005-10-31 2007-02-21 华中科技大学 Closed geared cold precisive forging mould of straight-toothed shaped cone

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2254787Y (en) * 1995-11-02 1997-05-28 霍连魁 Non-contacted-thin-sheet die for ring shaped forging piece
CN2316068Y (en) * 1997-08-21 1999-04-28 湖北传动轴股份有限公司 Automobile generator claw-pole blank finish forging die
US6085405A (en) * 1998-09-15 2000-07-11 Kao; Cheng-Hsien Method of fabricating a handlebar stem for a bicycle
CN1861314A (en) * 2005-05-10 2006-11-15 南阳二机石油装备(集团)有限公司 Integral forging method for mfg. petroleum double-arm lifting-ring
CN2871060Y (en) * 2005-10-31 2007-02-21 华中科技大学 Closed geared cold precisive forging mould of straight-toothed shaped cone

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Title
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Address after: 311106 Industrial Park, Tangqi Town, Yuhang District, Zhejiang, China

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