CN104959504B - The Forging Technology of one-body molded Three-edged drill stem - Google Patents
The Forging Technology of one-body molded Three-edged drill stem Download PDFInfo
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- CN104959504B CN104959504B CN201510428117.4A CN201510428117A CN104959504B CN 104959504 B CN104959504 B CN 104959504B CN 201510428117 A CN201510428117 A CN 201510428117A CN 104959504 B CN104959504 B CN 104959504B
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Abstract
The Forging Technology of one-body molded Three-edged drill stem, first pipe tubing is obtained after cold-drawn Three-edged drill stem blank, then female base and male base is processed respectively at the two ends of Three-edged drill stem blank, drilling rod is obtained after turning, described female base is when forging, first three abutment pier systems of Three-edged drill stem blank one end are expanded to arc, eliminate the acute angle between limit and limit, the most again this end is carried out pier recovery to three prismatic, and during pier system, make on each edge outerplanar, to increase by a thickening part being shaped as round platform arc by mould, these three thickening part is positioned on the outer surface of a round platform with Three-edged drill stem blank center as axle center.The Forging Technology of one-body molded Three-edged drill stem of the present invention, first three abutment pier systems of Three-edged drill stem blank are expanded to arc, to eliminate the acute angle between limit and limit, required form is made again by mould pier, technique is simple, and increase has a thickening part on three outerplanars of female base formed, intensity is higher, more robust.
Description
Technical field
The present invention relates to forging field, the Forging Technology of the most one-body molded Three-edged drill stem.
Background technology
Drilling rod is the parts connecting rig with drill bit, is usually used in the industries such as coal probing, gas drainage under suction.In the prior art, the pin and box sub of two ends of drill is welded in drill rod body more, owing to the connector of welding will necessarily exist weld defect, weld seam obdurability is uneven, this directly results in drilling rod and often occurs the problems such as deformation, fracture, the problem bringing inconvenience to gas drainage under suction in follow-up probing and coal seam in drilling process.
nullIn January, 2015, State Intellectual Property Office disclosed the patent of invention of " the one-body molded drilling rod of Rhizoma Sparganii "，Patent No. 201520057086.1，Claims of the one-body molded drilling rod of Rhizoma Sparganii described in this invention are pointed out，The position at drilling rod body two ends obtains integrated Three-edged drill stem after heating necking down，Then its detailed description of the invention further points out，The two ends of drilling rod are through extruded、Integrated male and female head is obtained after quenching heat treatment and process of turning blue，The male and female head of the Three-edged drill stem that this simple processing method obtains，In extrusion process, drilling rod surface not only creases easily，And，Three limits of Three-edged drill stem mutually form acute angle，In strength extrusion process，It is one that acute angle makes three limits the most mutually mix，This situation once occurs，Follow-up processing will be unable to proceed，This simple processing method yield rate is the lowest，And the faceted pebble position of female does not process through thickening after finished product，Rib wall is the thinnest，Obdurability is not enough in actual applications，Fracture it is very easy under strong moment of torsion.
Summary of the invention
In order to solve the problems referred to above, the purpose of the present invention is to propose to the Forging Technology of one-body molded Three-edged drill stem, first the straight flange pier system at Three-edged drill stem blank both ends is expanded to arc, to eliminate the acute angle between limit and limit, it is to avoid the gauffer that pier process acute angle causes, then type made by pier in a mold, obtain integrated male and female head base, and on three outerplanars of female base, increase the thickening part of a round platform arcuate structure, add the rib wall thickness of female, improve the intensity of female.
The present invention is to solve that the technical scheme that the problems referred to above are taked is: the Forging Technology of one-body molded Three-edged drill stem, first pipe tubing is obtained after cold-drawn Three-edged drill stem blank, then female base and male base is processed respectively at the two ends of Three-edged drill stem blank, drilling rod is i.e. obtained after turning, described female base is when forging, first three abutment pier systems of Three-edged drill stem blank one end are expanded to arc, to eliminate the acute angle between limit and limit, the most again this end is carried out pier recovery to three prismatic, and during pier system, each edge outerplanar is made to increase by a thickening part being shaped as round platform arc by mould, these three thickening part is positioned on the outer surface of a round platform with Three-edged drill stem blank center as axle center.
Described male base is when forging, first the end pier system of Three-edged drill stem blank is expanded to a two-part structure, wherein, one section be directly connected to Three-edged drill stem blank end is gradually reduced and the round platform of band central through hole to rear for diameter, one section be connected with round platform is and this end round platform equal diameters and the cylinder of band central through hole, so that three limits of Three-edged drill stem this end of blank extend out as arc, eliminate the acute angle between limit and limit, carry out pier system the most again to round table-like structure.
The concrete technology of described female base forging comprises the following steps:
1) type made by Three-edged drill stem blank one end pier in female Preform Die
By Three-edged drill stem blank heating one end to forging temperature, in female Preform Die, type made by pier, makes the straight flange faceted pebble of this end extend out to arc surface, forms female just forging stock；
Wherein, upset ratio is 1.2 ~ 1.5；
2) type made by female just forging stock pier in female finish-forging die
Female just forging stock is heated to forging temperature, in female finish-forging die, type made by pier, female just forging stock is made to recover to three initial fusiform structures, and all increase by a thickening part being shaped as round platform arc at three limit outerplanars, these three thickening part is positioned on the outer surface of a round platform with Three-edged drill stem center as axle center, forms female base；
Wherein, upset ratio is 1.2 ~ 1.3.
The concrete technology of described male base forging comprises the following steps:
A) type made by Three-edged drill stem blank other end pier in public Preform Die
The Three-edged drill stem blank other end is heated to forging temperature, in public Preform Die, type made by pier, the straight flange faceted pebble making this end extends out to a two-part structure, wherein, one section be directly connected to Three-edged drill stem blank end is gradually reduced and the round platform of band central through hole to rear for diameter, one section be connected with round platform is and this end round platform equal diameters and the cylinder of band central through hole, forms male just forging stock；
Wherein, upset ratio is 1.2 ~ 1.5；
B) type made by male just forging stock pier in public finish-forging die
Male just forging stock is heated to forging temperature, and in public finish-forging die, type made by pier, by male just forging stock pier to truncated cone-shaped structure, forms male base；
Wherein, upset ratio is 1.2 ~ 1.3.
The truncated cone-shaped that female Preform Die profile is interior hollow used in described step 1), inwall is made up of three arc surfaces and three isometrical arc chord angles of connection alternate with each other.
Described step 2) the middle truncated cone-shaped that female finish-forging die profile is interior hollow used, inwall is one or three fusiform structures, and on three faceted pebbles, increasing by a thickening groove being shaped as round platform arc, these three thickeies groove and is positioned on the outer surface of a round platform with Three-edged drill stem center as axle center.
The truncated cone-shaped that public Preform Die profile is interior hollow used in described step a), inwall includes round table surface a that the face of cylinder of upper part and lower part diameter are from top to bottom gradually increased.
The truncated cone-shaped that public finish-forging die profile is interior hollow used in described step b), inwall is round table surface b that diameter is from top to bottom gradually increased.
Preferably, described female Preform Die, female finish-forging die, male Preform Die and male finish-forging die may each be the assembling die combined and spliced by multiple assemblies, it is also possible to be the unitary mould of integrative-structure.
Compared with prior art, the method have the advantages that
First, the Forging Technology of one-body molded Three-edged drill stem of the present invention, first three straight flange pier systems at Three-edged drill stem blank both ends are expanded to arc, the most just the acute angle between limit and limit can be eliminated, avoid the occurrence of the end of Three-edged drill stem during forging pier system, between the gauffer or limit and the limit that cause because of acute angle, " mixing " is the situation of, is very easy to follow-up forging pier system in a mold and one-body molded.
Second, the Forging Technology of one-body molded Three-edged drill stem of the present invention, after molding, the outer surface of three seamed edges of female all adds the thickening part of a round platform arcuate structure, directly increase the rib wall thickness of female, avoid the problem that integrated female rib wall thickness is weak, improve the intensity of female, and when making male and female head dock in actual use, the intensity of docking location is higher.
3rd, the Forging Technology of one-body molded Three-edged drill stem of the present invention, the procedure of processing of male and female head base is divided into two steps, respectively through the male and female head obtaining molding after twice pier system and follow-up turning, avoid single pier and make the forging defect that the steel surface easily occurred in type " frills ", and pier system repeatedly can make the metallographic structure more dense uniform of steel, directly increase metallicity, improve male and female rigidity of the nape degree.
Accompanying drawing explanation
Fig. 1 is the Three-edged drill stem blahk structure schematic diagram of the Forging Technology of the one-body molded Three-edged drill stem of the present invention；
Fig. 2 is female Preform Die structural representation of the Forging Technology of the one-body molded Three-edged drill stem of the present invention；
Fig. 3 is the sectional view of the female just forging stock of the Forging Technology of the one-body molded Three-edged drill stem of the present invention；
Fig. 4 is female finish-forging die structural representation of the Forging Technology of the one-body molded Three-edged drill stem of the present invention；
Fig. 5 is the female base sectional view of the Forging Technology of the one-body molded Three-edged drill stem of the present invention；
Fig. 6 is the public Preform Die structural representation of the Forging Technology of the one-body molded Three-edged drill stem of the present invention；
Fig. 7 is the structural representation of the male just forging stock of the Forging Technology of the one-body molded Three-edged drill stem of the present invention；
Fig. 8 is the public finish-forging die structural representation of the Forging Technology of the one-body molded Three-edged drill stem of the present invention；
Fig. 9 is the male blank structure schematic diagram of the Forging Technology of the one-body molded Three-edged drill stem of the present invention.
Labelling in figure: 1, Three-edged drill stem blank, 2, female Preform Die, 201, female just forging stock, 202, arc surface, 203, arc chord angle, 3, female finish-forging die, 301, thickening part, 302, thicken groove, 4, public Preform Die, 401, male just forging stock, 402, cylinder, 403, round platform, 404, the face of cylinder, 405, round table surface a, 5, public finish-forging die, 501, round table surface b, 6, female base, 7, male base.
Detailed description of the invention
Elaborating the present invention with specific embodiment below in conjunction with the accompanying drawings, the present embodiment, premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
nullThe Forging Technology of one-body molded Three-edged drill stem of the present invention，First pipe tubing is obtained after cold-drawn Three-edged drill stem blank 1，Then female base 6 and male base 7 is processed respectively at the two ends of Three-edged drill stem blank 1，Through turning female female thread、Integrated finished product drilling rod is i.e. obtained after male external screw thread，Described female base 6 is when forging or pressure are made，First three abutment pier systems of Three-edged drill stem blank 1 one end are expanded to arc，To eliminate the acute angle between limit and limit，The steel gauffer problem caused because of acute angle is avoided during pier system，Carry out pier recovery the most again to three prismatic，And during pier system，The outerplanar of Three-edged drill stem blank 1 each edge is made to increase by a thickening part 301 being shaped as round platform arc by mould，The least significant end thickness of this round platform arc thickening part 301 is maximum，And these three thickening part 301 is positioned on the outer surface of a round platform with Three-edged drill stem blank 1 center as axle center.
Described male base 7 is when forging or pressure are made, first the end pier system of Three-edged drill stem blank 1 is expanded to a two-part structure, wherein, one section be directly connected to Three-edged drill stem blank 1 end is gradually reduced and the round platform 403 of band central through hole to rear for diameter, one section be connected with round platform 403 is and this end round platform 403 equal diameters and the cylinder 402 of band central through hole, three straight flanges that can make this end of Three-edged drill stem blank 1 in this way extend out as arc-shaped side equally, to eliminate the acute angle between limit and limit, carry out pier system the most again to the round table-like structure in finished product male.
Foregoing is a basic brief embodiment of the present invention, and the present embodiment can be made on the basis of above the most concrete detailed description in detail.
The concrete technology of described female base 6 forging comprises the following steps:
1) type made by Three-edged drill stem blank 1 one end pier in female Preform Die 2
By Three-edged drill stem blank 1 heating one end to forging temperature, in female Preform Die 2, type made by pier, makes three straight flange faceted pebbles of this end extend out to arc surface 202, forms female just forging stock 201；
Wherein, upset ratio is 1.2 ~ 1.5；Depending on described forging temperature is all according to the former material of forging of Three-edged drill stem blank 1, corresponding different and known to industry the forging temperatures of different steel, if the first forging temperature of No. 45 steel is at about 1200 DEG C.
2) type made by female just forging stock 201 pier in female finish-forging die 3
Female just forging stock 201 is heated to forging temperature, in female finish-forging die 3, type made by pier, female just forging stock 201 is made to recover to three initial fusiform structures, and outside three limits of this Rhizoma Sparganii structure, increase by a thickening part 301 being shaped as round platform arc, these three thickening part 301 is positioned on the outer surface of a round platform with Three-edged drill stem center as axle center, forms female base 6；
Wherein, upset ratio is 1.2 ~ 1.3；Described female base respectively under twice different upset ratio pier make type, rather than single molding, this directly avoids the forging defect that the steel surface caused in single molding " frills " because upset ratio is excessive, and after pier system repeatedly, the metallographic structure of steel more dense uniform, obdurability is higher.
The concrete technology of described male base 7 forging comprises the following steps:
A) type made by Three-edged drill stem blank 1 other end pier in public Preform Die 4
Three-edged drill stem blank 1 other end is heated to forging temperature, in public Preform Die 4, type made by pier, the straight flange faceted pebble making this end extends out to a two-part structure, wherein, one section be directly connected to Three-edged drill stem blank 1 end is gradually reduced and the round platform 403 of band central through hole to rear for diameter, one section be connected with round platform 403 is and this end round platform 403 equal diameters and the cylinder 402 of band central through hole, forms male just forging stock 401；
Wherein, upset ratio is 1.2 ~ 1.5；In above-mentioned steps a), Three-edged drill stem blank 1 pier of this end is reduced to end and connects the frustum cone structure having cylinder, it it is not the round table-like profile that directly this end pier is reduced to finished product male, primarily to avoid direct pier to finished product size caused by the forging defect of steel surface " wrinkling ", reserve the pier surplus that end is cylinder, with pending follow-up pier system.
B) type made by male just forging stock 401 pier in public finish-forging die 5
Male just forging stock 401 is heated to forging temperature, and in public finish-forging die 5, type made by pier, by male just forging stock 401 pier to the truncated cone-shaped structure of finished product male, forms male base 7；
Wherein, pier ratio is 1.2 ~ 1.3；Through step b), by the cylinder " pier removes " of just forging stock 401 end of male in step a), the size of " shortening " male just forging stock 401 to finished product, to reach the dimensional requirement of finished product male, forms male base 7 further.
Above step be a detailed description of the invention of the present embodiment, described female base 6 and male base 7 after follow-up further turnery processing, form integrated Three-edged drill stem.On the basis of above-mentioned Forging Technology embodiment, the embodiment of forging mold can be made and being discussed further.
The truncated cone-shaped that female Preform Die 2 profile is interior hollow used in described step 1), it is possible to for cylinder or other shapes of interior hollow, its inwall is made up of three arc surfaces 202 and three isometrical arc chord angles 203 of connection alternate with each other.
Described step 2) the middle truncated cone-shaped that female finish-forging die 3 profile is interior hollow used, it is alternatively cylinder or other shapes of interior hollow, its inwall is one or three fusiform structures, and on three faceted pebbles, increase by a thickening groove 302 being shaped as round platform arc, these three thickeies groove 302 and is positioned on the outer surface of a round platform with Three-edged drill stem center as axle center, can directly obtain straight flange rib outerplanar by this thickening groove 302 and have the female base 6 of thickening part 301.
The truncated cone-shaped that public Preform Die 4 profile is interior hollow used in described step a), it is possible to for cylinder or other shapes of interior hollow, its inwall includes round table surface a405 that the face of cylinder 404 of upper part and lower part diameter are from top to bottom gradually increased.
The truncated cone-shaped that public finish-forging die 5 profile is interior hollow used in described step b), it is possible to for cylinder or other shapes of interior hollow, its inwall is round table surface b501 that diameter is from top to bottom gradually increased.
On the basis of above-mentioned forging mold embodiment, can make the most perfect.
Further, described female Preform Die 2, female finish-forging die 3, male Preform Die 4 and male finish-forging die 5 may each be the assembling die combined and spliced by multiple assemblies, it is also possible to be the unitary mould of integrative-structure.
Claims (9)
- The Forging Technology of the most one-body molded Three-edged drill stem, first pipe tubing is obtained after cold-drawn Three-edged drill stem blank (1), then the two ends at Three-edged drill stem blank (1) process female base (6) and male base (7) respectively, drilling rod is i.e. obtained after turning, it is characterized in that: described female base (6) is when forging, first three abutment pier systems of Three-edged drill stem blank (1) one end are expanded to arc, to eliminate the acute angle between limit and limit, the most again this end is carried out pier recovery to three prismatic, and during pier system, make on each edge outerplanar, to increase by a thickening part (301) being shaped as round platform arc by mould, these three thickening part (301) is positioned on the outer surface with Three-edged drill stem blank (1) center round platform as axle center.
- The Forging Technology of one-body molded Three-edged drill stem the most as claimed in claim 1, it is characterized in that: described male base (7) is when forging, first the end pier system of Three-edged drill stem blank (1) is expanded to a two-part structure, wherein, one section be directly connected to is held to be gradually reduced and the round platform (403) of band central through hole to rear for diameter with Three-edged drill stem blank (1), one section be connected with round platform (403) is and this end round platform (403) equal diameters and the cylinder (402) of band central through hole, so that three limits of Three-edged drill stem blank (1) this end extend out as arc, eliminate the acute angle between limit and limit, carry out pier system the most again to round table-like structure.
- The Forging Technology of one-body molded Three-edged drill stem the most as claimed in claim 1, it is characterised in that the concrete technology that described female base (6) is forged comprises the following steps:1) type made by Three-edged drill stem blank (1) one end pier in female Preform Die (2)By Three-edged drill stem blank (1) heating one end to forging temperature, in female Preform Die (2), type made by pier, makes the straight flange faceted pebble of this end extend out to arc surface (202), forms female just forging stock (201)；Wherein, upset ratio is 1.2 ~ 1.5；2) type made by female just forging stock (201) pier in female finish-forging die (3)Female just forging stock (201) is heated to forging temperature, in female finish-forging die (3), type made by pier, female just forging stock (201) is made to recover to three initial fusiform structures, and all increase by a thickening part (301) being shaped as round platform arc at three limit outerplanars, these three thickening part (301) is positioned on the outer surface of a round platform with Three-edged drill stem center as axle center, forms female base (6)；Wherein, upset ratio is 1.2 ~ 1.3.
- The Forging Technology of one-body molded Three-edged drill stem the most as claimed in claim 2, it is characterised in that the concrete technology that described male base (7) is forged comprises the following steps:A) type made by Three-edged drill stem blank (1) other end pier in public Preform Die (4)Three-edged drill stem blank (1) other end is heated to forging temperature, in public Preform Die (4), type made by pier, the straight flange faceted pebble making this end extends out to a two-part structure, wherein, one section be directly connected to is held to be gradually reduced and the round platform (403) of band central through hole to rear for diameter with Three-edged drill stem blank (1), one section be connected with round platform (403) is and this end round platform (403) equal diameters and the cylinder (402) of band central through hole, forms male just forging stock (401)；Wherein, upset ratio is 1.2 ~ 1.5；B) type made by male just forging stock (401) pier in public finish-forging die (5)Male just forging stock (401) is heated to forging temperature, and in public finish-forging die (5), type made by pier, by male just forging stock (401) pier to truncated cone-shaped structure, forms male base (7)；Wherein, upset ratio is 1.2 ~ 1.3.
- The Forging Technology of one-body molded Three-edged drill stem the most as claimed in claim 3, it is characterized in that: the truncated cone-shaped that female Preform Die (2) profile is interior hollow used in described step 1), inwall is made up of three arc surfaces (202) and three isometrical arc chord angles (203) of connection alternate with each other.
- The Forging Technology of one-body molded Three-edged drill stem the most as claimed in claim 3, it is characterized in that: described step 2) the middle truncated cone-shaped that female finish-forging die (3) profile is interior hollow used, inwall is one or three fusiform structures, and on three faceted pebbles, increasing by a thickening groove (302) being shaped as round platform arc, these three thickeies groove (302) and is positioned on the outer surface of a round platform with Three-edged drill stem center as axle center.
- The Forging Technology of one-body molded Three-edged drill stem the most as claimed in claim 4, it is characterized in that: the truncated cone-shaped that public Preform Die (4) profile is interior hollow used in described step a), inwall includes round table surface a(405 that the face of cylinder (404) of upper part and lower part diameter are from top to bottom gradually increased).
- The Forging Technology of one-body molded Three-edged drill stem the most as claimed in claim 4, it is characterised in that: the truncated cone-shaped that public finish-forging die (5) profile is interior hollow used in described step b), inwall is round table surface b(501 that diameter is from top to bottom gradually increased).
- 9. the Forging Technology of the one-body molded Three-edged drill stem as described in claim 5-8 any one, it is characterized in that: described female Preform Die (2), female finish-forging die (3), male Preform Die (4) and male finish-forging die (5) may each be the assembling die combined and spliced by multiple assemblies, it is also possible to be the unitary mould of integrative-structure.
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| CN106563918A (en) * | 2015-10-12 | 2017-04-19 | 重庆美通钻杆制造有限公司 | Machining technology of integrated triangular drill pipe |
| CN107891113B (en) * | 2017-12-18 | 2024-04-19 | 淮北恒远工程建材设备有限责任公司 | Welding-free triangular arc rib integrated drill rod clamping device and processing method thereof |
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| US5184495A (en) * | 1991-12-03 | 1993-02-09 | Prideco, Inc. | Method of internally and externally upsetting the end of a metal tube |
| CN100506423C (en) * | 2006-06-30 | 2009-07-01 | 宝山钢铁股份有限公司 | Method for manufacturing over-length upset end drilling rod |
| CN101259580A (en) * | 2008-04-29 | 2008-09-10 | 江苏常宝钢管股份有限公司 | Processing technique for integral drill rod |
| CN102059511B (en) * | 2009-11-13 | 2012-07-04 | 中原特钢股份有限公司 | Production process of integral kelly stem |
| CN103302461A (en) * | 2013-06-25 | 2013-09-18 | 陈靖忠 | Manufacturing method and manufacturing equipment of integral petroleum heavy weight drill pipe |
| CN103691862B (en) * | 2013-12-19 | 2015-12-02 | 江苏曙光华阳钻具有限公司 | Heavy weight drill pipe two ends junction method for upsetting |
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