CN104741400B - A kind of rectangle steel tubes inequilateral empty sinking mould - Google Patents
A kind of rectangle steel tubes inequilateral empty sinking mould Download PDFInfo
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- CN104741400B CN104741400B CN201510172465.XA CN201510172465A CN104741400B CN 104741400 B CN104741400 B CN 104741400B CN 201510172465 A CN201510172465 A CN 201510172465A CN 104741400 B CN104741400 B CN 104741400B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
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- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses the rectangle steel tubes inequilateral empty sinking mould of a kind of precision ensureing rectangular steel pipe and surface smoothness, including: the core rod in bushing and bushing, offering draw hole on core rod, this draw hole includes: entrance, importing changeover portion, derivation changeover portion and the sizing section being sequentially connected；This entrance includes: wide a pair importing curved surface, narrow a pair importing curved surface and four entrance corner curved surfaces, and the outside of importing curved surface wide, narrow and entrance corner curved surface is circular arc line along the line, and the distance between the summit along the line, outside of narrow a pair importing curved surface is L3The L of=1.1～1.3 times1, the distance between wide a pair summit along the line, outside importing curved surface isWherein, T is the thickness of rectangle steel tubes, L1And L2It is the spacing between wide a pair flat face and narrow a pair flat face respectively, 0.9≤k1≤1.1.The present invention is for being drawn into rectangular steel pipe by round steel pipe.
Description
Technical field
The present invention relates to the molding drawing die in Metal Forming technical field, refer more particularly to round steel
The molding drawing die of the rectangular steel tubes of pipe drawing.
Background technology
Drawing mould is important fixture component during cold drawing steel tube production, has been widely used in steel pipe reducing
Or/and in the production process of deformation.Utilize drawing die that steel pipe is carried out cold drawn forming, have stock utilization high,
The features such as energy consumption is low, properties of product are excellent, production efficiency is high, with low cost.In drawing mould, draw by it
Pull into the different pipe geometry of type, be divided into again conventional drawing mould and special-shaped drawing mould, special for cold-drawn
Different special section tubular product for special-shaped drawing mould (also referred to as special-shaped drawing die)；Divide with or without lining core by it, be divided into again
Empty sinking drawing die (be called for short empty sinking mould) and lining core drawing die, the bigger set of specifications of draw away from time, due to draw
Power is huge, can only use empty sinking mould.
The empty sinking mould of traditional steel tubes, it is relatively simple for structure, including: mold be opened in mould
Nib in body, this nib generally includes: entrance, changeover portion, sizing section and outlet section, through its drawing
The rectangle steel tubes of molding, surface is not the most smooth, and precision is the highest；And, at actual drawing process
In, production efficiency is relatively low, and, mould the most easily ftractures, and substantially reduces service life.
Summary of the invention
The technical problem to be solved is: provide a kind of precision ensureing rectangular steel pipe and surface to put down
The rectangle steel tubes inequilateral empty sinking mould of whole degree.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of rectangle steel tubes is not
Equilateral empty sinking mould, including: bushing and be arranged on bushing in cylindrical core rod, core rod offers and runs through
The draw hole of core rod, this draw hole include be sequentially connected entrance, import changeover portion, be derived
The section of crossing and sizing section, described bushing one end is provided with for installing the uncovered of core rod, and described core rod is from this
Uncovered be embedded in bushing in, the bushing other end is provided with end wall, this end wall offers and draw hole phase
The outlet coordinated；
Described sizing section includes: respectively with long a pair straight flange of rectangle steel tubes cross-sectional profiles, a pair
Short straight flange and to connect a pair wide corresponding with the four of short straight flange corner circular arcs of the most adjacent long straight flange straight
Face, narrow a pair flat face and four corner arc surfaces, the spacing between narrow a pair flat face is L1, a pair wide
Spacing between flat face is L2, the radius of curvature of four corner arc surfaces is R1；
Described derivation changeover portion includes: wide derivation intermediate incline that a pair is connected mutually with wide flat face, a pair
It is oblique that the narrow derivation intermediate incline being connected mutually with narrow flat face and four connect the most adjacent width, narrow derivation transition
The derivation changeover portion corner curved surface in face；
Described importing changeover portion includes: a pair with wide derive that intermediate incline is connected mutually wide import intermediate incline,
Narrow importing intermediate incline that a pair is connected mutually with narrow derivation intermediate incline and four connect the most adjacent width, narrow
Import the importing changeover portion corner curved surface of intermediate incline；
Described entrance includes: wide importing curved surface that a pair is connected mutually with wide importing intermediate incline, a pair with
Narrow importing curved surface that narrow importing intermediate incline is connected mutually and four connect the most adjacent width, narrow importing curved surfaces
Entrance corner curved surface, the outside of importing curved surface wide, narrow and entrance corner curved surface is circular arc line along the line, enters
The outer edge curvature of a curve radius of mouth corner curved surface is R2The R of=2～3 times1；The outside of wide importing curved surface is along the line
Radius of curvature be R3=L1, the outer edge curvature of a curve radius of narrow importing curved surface is R4The L of=1.2～1.5 times1,
Distance between the summit along the line, outside of narrow a pair importing curved surface is L3The L of=1.1～1.3 times1, import for wide a pair
Distance between the summit along the line, outside of curved surface is L4, the external diameter of described core rod is Φ1If: and rectangle deformed steel
The thickness of pipe is T, then:
Wherein, 1.2≤k2≤1.5。
As a kind of preferred version, in described a kind of rectangle steel tubes inequilateral empty sinking mould, described mould
The draw hole of core is provided with connection sizing section and the outlet section of bushing outlet, and this outlet section includes: a pair with
Wide exit ramp that the wide flat face of sizing section is connected mutually, narrow with what the narrow flat face of sizing section was connected mutually a pair
Exit ramp and four the most adjacent wide, outlet corner curved surfaces of narrow exit ramp of connection.
As a kind of preferred version, in described a kind of rectangle steel tubes inequilateral empty sinking mould, described
Outlet section, sizing section, derivation changeover portion, importing changeover portion and entrance account for described core rod thickness respectively
L55.7～6.3%, 26.6～29.4%, 20.9～23.1%, 20.9～23.1% and 20.9～23.1%；
If: cut in the longitudinal direction of core rod on cross section, between starting point and the starting point of introduction segment of homonymy sizing section
Angle between line and the axial line of core rod is α, then: derive the derivation intermediate incline angle of inclination beta of changeover portion
Being the 18～20% of α, the importing intermediate incline inclination angle γ importing changeover portion is the 35～40% of α.
As a kind of preferred version, in described a kind of rectangle steel tubes inequilateral empty sinking mould, described
Between sizing section and derivation changeover portion, derive changeover portion and import between changeover portion, import changeover portion and importing
Smooth transition surface it is respectively arranged with between Duan.
As a kind of preferred version, in described a kind of rectangle steel tubes inequilateral empty sinking mould, described edge
The outlet of set includes: wide derivation inclined-plane that a pair is connected mutually with the wide exit ramp of core rod outlet section, a pair and
Narrow derivation inclined-plane that the narrow exit ramp of core rod outlet section is connected mutually and connect the most adjacent width, narrow derivation
Four derivation corner curved surfaces on inclined-plane.
As a kind of preferred version, in described a kind of rectangle steel tubes inequilateral empty sinking mould, described edge
The thickness of set end wall is core rod thickness L59.5～10.5%.
As a kind of preferred version, in described a kind of rectangle steel tubes inequilateral empty sinking mould, described
Bushing lateral surface is the taper surface that its uncovered one end external diameter close is big, and its taper angle θ is between 3～4 °.
The invention has the beneficial effects as follows: the present invention (imports changeover portion by arranging multiple changeover portion and is derived
The section of crossing) and have employed the introduction segment of offbeat form, substantially increase the precision of rectangular steel pipe, surface is put down
Whole degree and production efficiency, also have, and by controlling the outside dimension of core rod, both ensure that the intensity of core rod, again
Save the material cost of core rod；In addition, the present invention is also by reasonable distribution sizing section, derivation transition
Section, import changeover portion, the length of introduction segment and derive changeover portion, import changeover portion, introduction segment oblique
Degree so that the deformation of pipe is more smooth and easy, further increase the precision of rectangular steel pipe, surface smoothness and
Production efficiency；It addition, the present invention is also by bushing lateral wall is arranged to taper, and by bushing end wall
THICKNESS CONTROL is at core rod thickness L39.5～10.5% between, both ensure that bushing intensity, saved again edge
The material cost of set.
Accompanying drawing explanation
Fig. 1 is the structural representation of rectangle steel tubes inequilateral empty sinking mould of the present invention.
Fig. 2 is the sectional structure schematic diagram in A-A direction in Fig. 1.
Fig. 3 is the structural representation of the cross section of rectangle steel tubes of the present invention.
Reference in Fig. 1 to Fig. 3 is: 1, bushing, 11, lateral surface, 12, end wall, 121, outlet,
2, core rod, 22, outlet section, 23, sizing section, 24, derive changeover portion, 25, import changeover portion, 26,
Entrance, 3, rectangle steel tubes, 31, short straight flange, 32, corner circular arc, 33, long straight flange.
Detailed description of the invention
Below in conjunction with the accompanying drawings, a kind of rectangle deformed steel produced as shown in Figure 3 of the present invention is described in detail
The specific embodiments of the inequilateral empty sinking mould of pipe 3.
As depicted in figs. 1 and 2, rectangle steel tubes inequilateral empty sinking mould of the present invention, including: edge
Set 1 and the cylindrical core rod 2 being arranged in bushing 1, this core rod 2 offers the drawing die running through core rod
Hole, this draw hole include be sequentially connected entrance 26, import changeover portion 25, derive changeover portion 24,
Sizing section 23 and outlet section 22, described one end of bushing 1 is provided with for installing the uncovered of core rod 2, described
Core rod 2 uncovered be embedded in bushing 1 from this, the other end of bushing 1 is provided with end wall 12, this end wall 12
On offer the outlet 121 matched with draw hole；Described sizing section 23 includes: different with rectangle respectively
Long a pair straight flange 33 of shape steel tube 3 cross-sectional profiles, short a pair straight flange 31 and the most adjacent long straight flange of connection
33 and corresponding wide a pair flat face of four corner circular arcs 32 of short straight flange 31, narrow a pair flat face and four
Individual corner arc surface, the spacing between narrow a pair flat face is L1(with rectangle steel tubes 3 cross-sectional profiles
The length of long straight flange 33 suitable, i.e. error is in the margin of tolerance, as follows), between wide a pair flat face
Spacing be L2(suitable with the length of the short straight flange 31 of rectangle steel tubes 3 cross-sectional profiles), four turn
The radius of curvature of angle arc surface is R1(the curvature with the corner circular arc 32 of rectangle steel tubes 3 cross-sectional profiles
Radius is suitable)；Described derivation changeover portion 24 includes: the wide derivation transition that a pair is connected mutually with wide flat face
Inclined-plane, the narrow derivation intermediate incline being connected mutually with narrow flat face for a pair and four connect the most adjacent width, narrow
Derive the derivation changeover portion corner curved surface of intermediate incline；Described importing changeover portion 25 includes: lead with width for a pair
Go out the wide importing intermediate incline that intermediate incline is connected mutually, the narrow importing being connected mutually for a pair with narrow derivation intermediate incline
Intermediate incline and four connections the most adjacent width, the importing changeover portion corner curved surfaces of narrow importing intermediate incline；
Described entrance 26 includes: wide importing curved surface that a pair is connected mutually with wide importing intermediate incline, a pair with narrow
Import the narrow importing curved surface that is connected mutually of intermediate incline and four connect the most adjacent width, narrow importing curved surface
Entrance corner curved surface, the outside of importing curved surface wide, narrow and entrance corner curved surface is circular arc line, entrance along the line
The outer edge curvature of a curve radius of corner curved surface is R2The R of=2～3 times1；The outside of wide importing curved surface is along the line
Radius of curvature is R3=L1, the outer edge curvature of a curve radius of narrow importing curved surface is R4The L of=1.2～1.5 times1,
Distance between the summit along the line, outside of narrow a pair importing curved surface is L3The L of=1.1～1.3 times1, import for wide a pair
Distance between the summit along the line, outside of curved surface is L4, the external diameter of described core rod is Φ1If: and rectangle deformed steel
The thickness of pipe is T, then:
Wherein, 1.2≤k2≤1.5；
The draw hole of described core rod 2 is provided with and connects sizing section 23 and the outlet section 22 of bushing 1 outlet, should
Outlet section 22 includes: wide exit ramp, a pair and the sizing section that a pair is connected mutually with the wide flat face of sizing section
The narrow exit ramp that is connected mutually of narrow flat face and four connect the most adjacent wide, the outlets of narrow exit ramp
Corner curved surface；Length L of described outlet section 2252, length L of sizing section 2353, derive changeover portion 24
Length L54, import changeover portion 25 length L55Length L with entrance 2656Account for described mould respectively
Core 2 thickness L55.7～6.3%, 26.6～29.4%, 20.9～23.1%, 20.9～23.1% and 20.9～
23.1%, preferred plan is: length L of described outlet section 2252, length L of sizing section 2353, derive
Length L of changeover portion 2454, import changeover portion 25 length L55Length L with entrance 2656Account for respectively
To described core rod 2 thickness L56%, 28%, 22%, 22% and 22%；If: in the longitudinal direction of core rod 2
In cut on cross section, the axle center of the line between starting point and the starting point of introduction segment of homonymy sizing section 23 and core rod 2
Angle between line is α, then: derive changeover portion 24 derive intermediate incline angle of inclination beta be α 18～
20%, the inclination angle γ importing intermediate incline importing changeover portion 25 is the 35～40% of α；Described sizing
Between section 23 and derivation changeover portion 24, derive changeover portion 24 and import between changeover portion 25, import transition
It is respectively arranged with smooth transition surface between section 25 and entrance 26；The described outlet of bushing 1 includes: a pair
Wide derivation inclined-plane, a pair and core rod 2 outlet section 22 being connected mutually with the wide exit ramp of core rod 2 outlet section 22
The narrow derivation inclined-plane that is connected mutually of narrow exit ramp and connect four of the most adjacent derivation inclined-plane wide, narrow
Derive corner curved surface；In the present embodiment, the thickness L of described bushing 1 end wall 1251For core rod 2 thickness
L59.5～10.5%, the opening end of bushing 1 exceedes length L of core rod 257Not less than core rod 2 thickness L5
2%；The described lateral surface of bushing 1 11 is the taper surface that its uncovered one end external diameter close is big, its tapering
Angle θ is between 3～4 °.
In sum, only presently preferred embodiments of the present invention, not it is used for limiting the model that the present invention implements
Enclose, all impartial changes made according to the shape described in scope of the invention as claimed, structure, feature and spirit
With modification, all should be included in scope of the presently claimed invention.
Claims (7)
1. a rectangle steel tubes inequilateral empty sinking mould, including: bushing and be arranged on bushing in cylinder
Core rod, it is characterised in that: offer the draw hole running through core rod, this draw hole on described core rod
Include be sequentially connected entrance, import changeover portion, derive changeover portion and sizing section, described bushing one
End be provided with for installing the uncovered of core rod, described core rod from this uncovered be embedded in bushing, bushing is another
One end is provided with end wall, and this end wall offers the outlet matched with draw hole；
Described sizing section includes: respectively with long a pair straight flange of rectangle steel tubes cross-sectional profiles, a pair
Short straight flange and to connect a pair wide corresponding with the four of short straight flange corner circular arcs of the most adjacent long straight flange straight
Face, narrow a pair flat face and four corner arc surfaces, the spacing between narrow a pair flat face is L1, a pair wide
Spacing between flat face is L2, the radius of curvature of four corner arc surfaces is R1；
Described derivation changeover portion includes: wide derivation intermediate incline that a pair is connected mutually with wide flat face, a pair
It is oblique that the narrow derivation intermediate incline being connected mutually with narrow flat face and four connect the most adjacent width, narrow derivation transition
The derivation changeover portion corner curved surface in face；
Described importing changeover portion includes: a pair with wide derive that intermediate incline is connected mutually wide import intermediate incline,
Narrow importing intermediate incline that a pair is connected mutually with narrow derivation intermediate incline and four connect the most adjacent width, narrow
Import the importing changeover portion corner curved surface of intermediate incline；
Described entrance includes: wide importing curved surface that a pair is connected mutually with wide importing intermediate incline, a pair with
Narrow importing curved surface that narrow importing intermediate incline is connected mutually and four connect the most adjacent width, narrow importing curved surfaces
Entrance corner curved surface, the outside of importing curved surface wide, narrow and entrance corner curved surface is circular arc line along the line, enters
The outer edge curvature of a curve radius of mouth corner curved surface is R2The R of=2～3 times1；The outside of wide importing curved surface is along the line
Radius of curvature be R3=L1, the outer edge curvature of a curve radius of narrow importing curved surface is R4The L of=1.2～1.5 times1,
Distance between the summit along the line, outside of narrow a pair importing curved surface is L3The L of=1.1～1.3 times1, import for wide a pair
Distance between the summit along the line, outside of curved surface is L4, the external diameter of described core rod is Φ1If: and rectangle deformed steel
The thickness of pipe is T, then:
Wherein, 1.2≤k2≤1.5。
2. rectangle steel tubes inequilateral empty sinking mould as claimed in claim 1, it is characterised in that: described mould
The draw hole of core is provided with connection sizing section and the outlet section of bushing outlet, and this outlet section includes: a pair with
Wide exit ramp that the wide flat face of sizing section is connected mutually, narrow with what the narrow flat face of sizing section was connected mutually a pair
Exit ramp and four the most adjacent wide, outlet corner curved surfaces of narrow exit ramp of connection.
3. rectangle steel tubes inequilateral empty sinking mould as claimed in claim 2, it is characterised in that: described
Outlet section, sizing section, derivation changeover portion, importing changeover portion and entrance account for described core rod thickness respectively
L55.7～6.3%, 26.6～29.4%, 20.9～23.1%, 20.9～23.1% and 20.9～23.1%；
If: cut in the longitudinal direction of core rod on cross section, between starting point and the starting point of introduction segment of homonymy sizing section
Angle between line and the axial line of core rod is α, then: derive the derivation intermediate incline angle of inclination beta of changeover portion
Being the 18～20% of α, the importing intermediate incline inclination angle γ importing changeover portion is the 35～40% of α.
4. rectangle steel tubes inequilateral empty sinking mould as claimed any one in claims 1 to 3, its feature
It is: between described sizing section and derivation changeover portion, derive changeover portion and import between changeover portion, import
Smooth transition surface it is respectively arranged with between changeover portion and introduction segment.
5. the rectangle steel tubes inequilateral empty sinking mould as described in claim 4 middle term, it is characterised in that: institute
State bushing outlet to include: wide derivation inclined-plane that a pair is connected mutually with the wide exit ramp of core rod outlet section,
To the narrow derivation inclined-plane being connected mutually with the narrow exit ramp of core rod outlet section and connect the most adjacent width, narrow
Derive four derivation corner curved surfaces on inclined-plane.
6. rectangle steel tubes inequilateral empty sinking mould as claimed in claim 5, it is characterised in that: described edge
The thickness of set end wall is core rod thickness L59.5～10.5%.
7. rectangle steel tubes inequilateral empty sinking mould as claimed in claim 6, it is characterised in that: described
Bushing lateral surface is the taper surface that its uncovered one end external diameter close is big, and its taper angle θ is between 3～4 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510172465.XA CN104741400B (en) | 2015-04-13 | 2015-04-13 | A kind of rectangle steel tubes inequilateral empty sinking mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510172465.XA CN104741400B (en) | 2015-04-13 | 2015-04-13 | A kind of rectangle steel tubes inequilateral empty sinking mould |
Publications (2)
| Publication Number | Publication Date |
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| CN104741400A CN104741400A (en) | 2015-07-01 |
| CN104741400B true CN104741400B (en) | 2016-08-17 |
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| CN105312343B (en) * | 2015-10-14 | 2017-09-29 | 张家港华程特种材料股份有限公司 | A kind of square shape tube Die |
| CN108526232B (en) * | 2018-05-14 | 2024-02-06 | 重庆龙煜精密铜管有限公司 | Cross pipe one-step forming blank drawing die |
| CN108906902B (en) * | 2018-08-22 | 2024-09-13 | 广东海亮铜业有限公司 | Die and D-shaped pipe machining device |
| CN109675946B (en) * | 2018-12-28 | 2023-06-16 | 张家港华程特种材料股份有限公司 | Regular octagon drawing die |
| WO2022099627A1 (en) * | 2020-11-13 | 2022-05-19 | 盐城利盐新材料有限公司 | Composite die for improving cold drawing deformation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1731329A1 (en) * | 1989-06-19 | 1992-05-07 | Уральский научно-исследовательский институт трубной промышленности | Drawing die for making shaped pipes |
| CN101708507A (en) * | 2009-12-05 | 2010-05-19 | 衡阳华菱钢管有限公司 | Compound external mold for cold drawing steel tube |
| CN202447407U (en) * | 2012-02-27 | 2012-09-26 | 上海奉贤钢管厂 | Mould special for cold-drawing steel pipe |
| CN202591267U (en) * | 2012-04-05 | 2012-12-12 | 长沙海航高精管科技有限公司 | Drawing die of large-scale waveguide tube |
| CN102873119A (en) * | 2012-10-22 | 2013-01-16 | 江苏华程工业制管股份有限公司 | Drawing die for rectangular flat steel tube |
| CN202845479U (en) * | 2012-11-08 | 2013-04-03 | 株洲长江硬质合金工具有限公司 | Steel pipe drawing die |
| CN203751013U (en) * | 2014-03-14 | 2014-08-06 | 迟洪波 | Cold-drawing outer mold and cold-drawing mold for seamless steel tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07195115A (en) * | 1993-12-29 | 1995-08-01 | Yoshikatsu Waratani | Device for drawing tube |
-
2015
- 2015-04-13 CN CN201510172465.XA patent/CN104741400B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1731329A1 (en) * | 1989-06-19 | 1992-05-07 | Уральский научно-исследовательский институт трубной промышленности | Drawing die for making shaped pipes |
| CN101708507A (en) * | 2009-12-05 | 2010-05-19 | 衡阳华菱钢管有限公司 | Compound external mold for cold drawing steel tube |
| CN202447407U (en) * | 2012-02-27 | 2012-09-26 | 上海奉贤钢管厂 | Mould special for cold-drawing steel pipe |
| CN202591267U (en) * | 2012-04-05 | 2012-12-12 | 长沙海航高精管科技有限公司 | Drawing die of large-scale waveguide tube |
| CN102873119A (en) * | 2012-10-22 | 2013-01-16 | 江苏华程工业制管股份有限公司 | Drawing die for rectangular flat steel tube |
| CN202845479U (en) * | 2012-11-08 | 2013-04-03 | 株洲长江硬质合金工具有限公司 | Steel pipe drawing die |
| CN203751013U (en) * | 2014-03-14 | 2014-08-06 | 迟洪波 | Cold-drawing outer mold and cold-drawing mold for seamless steel tube |
Non-Patent Citations (1)
| Title |
|---|
| 铝合金矩形管拉伸模具设计合理性的探讨;单长智;《轻合金加工技术》;20040831;第32卷(第08期);37-38 * |
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