CN116296812A - Stainless steel seamless pipe stretching device and stretching method - Google Patents

Stainless steel seamless pipe stretching device and stretching method Download PDF

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Publication number
CN116296812A
CN116296812A CN202310240650.2A CN202310240650A CN116296812A CN 116296812 A CN116296812 A CN 116296812A CN 202310240650 A CN202310240650 A CN 202310240650A CN 116296812 A CN116296812 A CN 116296812A
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Prior art keywords
plate
stainless steel
steel seamless
sliding
shaft
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CN202310240650.2A
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Chinese (zh)
Inventor
陈武
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Zhejiang Zhongwu Steel Tube Manufacturing Co ltd
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Zhejiang Zhongwu Steel Tube Manufacturing Co ltd
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Priority to CN202310240650.2A priority Critical patent/CN116296812A/en
Publication of CN116296812A publication Critical patent/CN116296812A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/04—Chucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0017—Tensile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/025—Geometry of the test
    • G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0274—Tubular or ring-shaped specimens
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/04—Chucks, fixtures, jaws, holders or anvils
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Clamps And Clips (AREA)

Abstract

The invention discloses a stainless steel seamless tube stretching device, which comprises: the base is provided with a first chute; the two support plates are arranged on the base, one support plate is connected with the first sliding chute in a sliding manner and is in transmission connection with the moving mechanism; the support plate is provided with a plurality of second sliding grooves which are arranged at intervals around the circumference; each supporting plate is provided with a cylindrical positioning column, and the center of each positioning column is coaxial with the circumferential direction; the two clamping parts are respectively arranged on the two supporting plates; the clamping part includes: because the two ends of the stainless steel seamless pipe are clamped and fixed by the clamping plates and the positioning columns from the inner side and the outer side, even if the stainless steel seamless pipe is deformed in the stretching process, the two ends of the stainless steel seamless pipe are prevented from being separated from the positioning columns and the clamping plates.

Description

Stainless steel seamless pipe stretching device and stretching method
Technical Field
The invention relates to the technical field of stainless steel seamless tube processing, in particular to a stainless steel seamless tube stretching device and a stretching method.
Background
The seamless stainless steel pipe is a long steel with hollow section and no seam around, and is resistant to corrosion by weak corrosive medium such as air, steam, water and the like and chemical corrosive medium such as acid, alkali, salt and the like, and is also called as stainless acid-resistant steel pipe. The stainless steel pipe is divided into two main types of seamless pipes and welded pipes according to the production mode, wherein the seamless pipes can be divided into hot-rolled pipes, cold-drawn pipes, extruded pipes and the like, and cold-drawing and cold-rolling are secondary processing of the steel pipes; welded pipes are classified into straight welded pipes, spiral welded pipes, and the like. The material is mainly widely used for industrial conveying pipelines, such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments and the like, mechanical structural parts and the like.
In chinese patent application No.: CN201611135128.4 discloses a special device for a universal material mechanical property tester, which is applied to the field of material mechanical property test devices, such as steel tube tensile property test, in particular to a steel tube tensile property test, and specifically relates to a steel tube tensile device; the tensile test fixture comprises a pair of tensile chucks, a pair of locating pins and a pair of semicircular cushion blocks, wherein the tensile chucks are integrated, the cylindrical tail parts of the tensile chucks are connected with the assembly of a testing machine, rectangular grooves for installing tensile test samples are formed in sample fixing and combining parts of the tensile chucks, two locating holes which correspondingly penetrate through and are fixed are formed in the side walls of two sides of the rectangular grooves, the locating holes are formed in symmetrical positions of the two cushion blocks, and after the locating pins penetrate through the locating holes in the tensile chucks and the cushion blocks at the same time, two circumferential end parts of the tensile test samples are respectively connected with the tensile chucks and the cushion blocks to form a whole set of tensile device, and the tensile direction of the tensile test samples is perpendicular to the axial direction of the locating pins. According to the technical scheme, when the stainless steel seamless steel pipe is stretched, the two ends of the stainless steel seamless steel pipe are easy to clamp and fall off due to deformation. In view of this, the present application is proposed.
Disclosure of Invention
In order to solve at least one technical problem existing in the background technology, the invention provides a stainless steel seamless pipe stretching device and a stretching method.
The invention provides a stainless steel seamless tube stretching device, which comprises:
the base is provided with a first chute;
the moving mechanism is used for moving the moving mechanism,
the two support plates are arranged on the base, one support plate is connected with the first sliding chute in a sliding manner and is in transmission connection with the moving mechanism;
the support plate is provided with a plurality of second sliding grooves which are arranged at intervals around the circumference; each supporting plate is provided with a cylindrical positioning column, and the center of each positioning column is coaxial with the circumferential direction;
the two clamping parts are respectively arranged on the two supporting plates; the clamping part includes:
a fixing plate disposed on the support plate;
the moving plate is connected with the second sliding groove in a sliding manner;
the clamping plate is connected with the moving plate;
the screw rod is in threaded connection with the fixed plate and is in rotary connection with the movable plate.
Preferably, the clamping plate is arc-shaped.
Preferably, the apparatus further comprises:
the first plate is positioned between the two supporting plates and is in sliding connection with the first sliding groove;
the telescopic mechanism drives the first plate to move along the first sliding groove;
an auxiliary portion, the auxiliary portion comprising:
a second plate disposed on the first plate;
a first shaft connected to the second plate;
a first support located on the first shaft;
two leveling units, two leveling unit interval arrangement for place in stainless steel seamless tube's both sides, leveling unit includes:
the extrusion piece is connected with the first supporting piece through the connecting rod.
The extrusion piece is conical, and the diameter of one end far away from the connecting rod is smaller.
Preferably, a third chute is arranged on the first supporting piece;
the leveling unit further includes:
a second support disposed on the first support;
the sliding rod is in sliding connection with the second supporting piece;
the sliding block is connected with the sliding rod and is in sliding connection with the third sliding groove;
the first spring is sleeved on the sliding rod, one end of the first spring is connected with the sliding block, and the other end of the first spring is connected with the second supporting piece; wherein,,
the connecting rod is connected with the sliding block.
Preferably, the first shaft is rotatably connected to the second plate;
the auxiliary part further comprises a fixing mechanism for fixing the first shaft;
the first support piece and the leveling units are multiple, the first support piece and the leveling units are arranged along the circumferential spacing part of the first shaft, and the distance between the two extrusion pieces is gradually reduced along the circumferential direction of the first shaft.
Preferably, a fixing sleeve is arranged on one second plate, and a first limit groove is arranged in the fixing sleeve; the first limit groove is parallel to the first shaft;
the auxiliary portion further includes:
the movable ring is positioned in the fixed sleeve, a first limiting block is arranged on the movable ring, and the first limiting block is movably positioned in the first limiting groove; the movable ring is sleeved on the first shaft, a second limit groove is formed in the inner wall of the movable ring, and the second limit groove is parallel to the first limit groove;
the second limiting block is located on the first shaft and is movably located in the second limiting groove.
Preferably, the auxiliary part further comprises a second spring, the second spring is sleeved on the fixed sleeve, one end of the second spring is connected with the movable ring, the other end of the second spring is connected with the second plate, and the second spring is in a stretching state.
Preferably, the auxiliary parts are multiple, the auxiliary parts are arranged at intervals along the first sliding groove, and the first shafts of any two auxiliary parts are arranged in a non-parallel way
A stainless steel seamless tube stretching method adopts the device.
The beneficial effects brought by the invention are as follows:
the stainless steel seamless tube is arranged between the two support plates and sleeved on the positioning column. The moving plate is driven to move by rotating the screw rod, the clamping plate is pressed on the stainless steel seamless pipe, and the stainless steel seamless pipe is clamped and fixed from the inner side and the outer side by the clamping plate and the positioning column.
And a supporting plate is driven by a moving mechanism to be far away, so that the stainless steel seamless pipe is stretched.
Because the two ends of the stainless steel seamless pipe are clamped and fixed by the clamping plates and the positioning columns from the inner side and the outer side, even if the stainless steel seamless pipe is deformed in the stretching process, the two ends of the stainless steel seamless pipe are prevented from being separated from the positioning columns and the clamping plates. The stability is good, avoid droing.
Drawings
FIG. 1 is a schematic diagram of one aspect of the present disclosure;
FIG. 2 is a cross-sectional view of a disclosed positioning post or the like;
FIG. 3 is a front view of the extrusion of the present disclosure;
FIG. 4 is a cross-sectional view of an extrusion of the present disclosure;
fig. 5 is a cross-sectional view of a retaining sleeve or the like as disclosed herein.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other; the following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left" and "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, unless explicitly stated and limited otherwise, the term "coupled" is to be interpreted broadly, as for example, the term "coupled" may be a fixed connection, a removable connection, or an integral body; the mechanical connection and the transmission connection can be adopted; either directly, indirectly through intermediaries, or through a communication between two elements or an interaction between the two elements.
Referring to fig. 1 to 5, the stainless steel seamless tube stretching device provided by the invention comprises: base 1, mobile mechanism 2, two backup pads 3, two clamping parts.
The base 1 is provided with a first chute 101; two support plates 3 are disposed on the base 1, wherein one support plate 3 is slidably connected with the first chute 101 and is in transmission connection with the moving mechanism 2.
A plurality of second sliding grooves 301 are formed in the supporting plate 3, and the second sliding grooves 301 are circumferentially arranged at intervals; and each supporting plate 3 is provided with a cylindrical positioning column 4, and the center of the positioning column 4 is coaxial with the circumferential direction.
The two clamping parts are respectively arranged on the two supporting plates 3; the clamping part includes: a fixed plate 5, a movable plate 6, a clamping plate 7 and a screw 8.
The fixing plate 5 is arranged on the support plate 3; the moving plate 6 is slidably connected with the second chute 301; the clamping plate 7 is connected with the moving plate 6; the screw rod 8 is in threaded connection with the fixed plate 5 and is in rotary connection with the movable plate 6.
A stainless steel seamless tube a is placed between the two support plates 3 and is sleeved on the positioning column 4. The moving plate 6 is driven to move by rotating the screw rod 8, the clamping plate 7 is pressed on the stainless steel seamless pipe, and the stainless steel seamless pipe is clamped and fixed from the inner side and the outer side by the clamping plate 7 and the positioning column 4.
And a support plate 3 is driven to be far away by the moving mechanism 2, and the stainless steel seamless pipe is stretched.
Because the two ends of the stainless steel seamless pipe A are clamped and fixed by the clamping plates 7 and the positioning columns 4 from the inner side and the outer side, even if the stainless steel seamless pipe is deformed in the stretching process, the two ends of the stainless steel seamless pipe are prevented from being separated from the positioning columns 4 and the clamping plates 7. The stability is good.
As a further improvement of the above example, in one embodiment, the clamping plate 7 is arc-shaped. The contact area is increased, and the clamping plate 7 is prevented from being separated.
The apparatus further comprises: a first plate 9, a telescopic mechanism 10 and an auxiliary part.
The first plate 9 is positioned between the two support plates 3 and is in sliding connection with the first chute 101; the telescopic mechanism 10 drives the first plate 9 to move along the first chute 101;
the auxiliary portion includes: a second plate 11, a first shaft 12, a first support 13, two levelling units,
the second plate 11 is arranged on the first plate 9; the first shaft 12 is connected to the second plate 11; the first support 13 is located on the first shaft 12.
Two leveling units are arranged at intervals and are used for being placed on two sides of a stainless steel seamless pipe, and each leveling unit comprises: a connecting rod 14, an extrusion 15, the extrusion 15 being connected to the first support 13 by the connecting rod 14.
In the stretching process, the telescopic mechanism 10 is utilized to drive the first plate 9 to move back and forth, the extrusion pieces 15 on two sides are clung to the stainless steel seamless pipe, the extrusion pieces 15 are utilized to extrude the stainless steel seamless pipe, the stainless steel seamless pipe is flattened, the circumference degree of the stainless steel seamless pipe is ensured, the stainless steel seamless pipe can be kept round after being stretched, and deformation is avoided.
As a further improvement to the above example, in one embodiment, the extrusion 15 is tapered with a smaller diameter at the end distal from the connecting rod 14. The stainless steel seamless tube is extruded by the surface of the extrusion 15.
As a further development of the above-described embodiment, in one embodiment, the first support 13 is provided with a third runner;
the leveling unit further includes: a second support 16, a slide bar 17, a slide block 18, a first spring 19,
the second support 16 is placed on the first support 13; the slide bar 17 is slidingly connected with the second support 16; the sliding block 18 is connected with the sliding rod 17 and is in sliding connection with the third sliding groove; the first spring 19 is sleeved on the sliding rod 17, one end of the first spring is connected with the sliding block 18, and the other end of the first spring is connected with the second supporting piece 16; wherein the connecting rod 14 is connected with the slider 18.
The first spring 19 is used to apply work to the slider 18 and the connecting rod 14 to the extrusion 15, so that the extrusion 15 is tightly attached to the stainless steel seamless tube.
The stainless steel seamless pipe can warp when tensile, and at the in-process of first board 9 round trip movement, the different position size of stainless steel seamless pipe is different, through setting up first spring 19, can cushion, lets extrusion 15 can follow third spout moderate amount removal to a certain extent, better extrusion stainless steel seamless pipe, guarantees the circumference, guarantees to keep circular after the tensile.
As a further development of the above-described example, in one embodiment the first shaft 12 is in rotational connection with the second plate 11;
the auxiliary portion further includes a fixing mechanism for fixing the first shaft 12; the number of the first supporting members 13 and the number of the flattening units are plural, and the interval between the two pressing members 15 is gradually reduced along the circumferential direction of the first shaft 12 at intervals along the circumferential direction of the first shaft 12.
During the drawing process, the diameter of the stainless steel seamless tube gradually decreases. By opening the fixing mechanism, the first shaft 12 is turned, so that the pressing member 15 in the other flattening unit is brought into close contact with the stainless steel seamless pipe, and the stainless steel seamless pipe is preferably pressed. The extrusion 15 with proper intervals can be used for ensuring that the stainless steel seamless pipe can apply proper acting force to the stainless steel seamless pipe in the stretching process, and the stainless steel seamless pipe can be extruded better.
As a further improvement of the above embodiment, in one embodiment, a fixing sleeve 20 is provided on one of the second plates 11, and a first limiting groove 201 is provided in the fixing sleeve 20; the first limit groove 201 is parallel to the first shaft 12;
the auxiliary portion further includes: the movement ring 21, the second stopper 23,
the moving ring 21 is positioned in the fixed sleeve 20, a first limiting block 22 is arranged on the moving ring 21, and the first limiting block 22 is movably positioned in the first limiting groove 201; the moving ring 21 is sleeved on the first shaft 12, a second limiting groove 211 is formed in the inner wall of the moving ring 21, and the second limiting groove 211 is parallel to the first limiting groove 201; the second limiting block 23 is located on the first shaft 12 and is movably located in the second limiting groove 211.
As a further improvement of the above embodiment, in one embodiment, the auxiliary portion further includes a second spring 24, the second spring 24 is sleeved on the fixed sleeve 20, one end of the second spring is connected to the moving ring 21, the other end is connected to the second plate 11, and the second spring 24 is in a stretched state.
The second limiting blocks 23 and the second limiting grooves 211 may be disposed at intervals.
When adjustment is needed, the movable ring 21 is pulled outwards, the second limiting block 23 is separated from the second limiting groove 211, the first shaft 12 is rotated, the position of the first shaft 12 is adjusted, and different extrusion pieces 15 are used for extruding the stainless steel seamless tube.
Then, the moving ring 21 is moved inwards again, so that the second limiting block 23 enters the second limiting groove 211. Since the first stopper 22 is located in the first stopper groove 201, the rotation of the first shaft 12 is prevented, and the pressing member 15 can be made to apply pressure to the stainless steel seamless pipe.
As a further improvement of the above embodiment, in one embodiment, the auxiliary parts are a plurality of, a plurality of auxiliary parts are arranged at intervals along the first chute 101, and the first shafts 12 in any two auxiliary parts are arranged non-parallel.
In this embodiment, through setting up a plurality of auxiliary parts, the extrusion 15 in the different auxiliary parts is to the actual extrusion force in different positions of stainless steel seamless pipe, can be better to the stainless steel seamless pipe different positions level and smooth, let stainless steel seamless pipe can guarantee circular after tensile. The stretching effect is good.
A stainless steel seamless tube stretching method adopts the device. The stretching effect is good.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (10)

1. A stainless steel seamless tube stretching apparatus, comprising:
the base is provided with a first chute;
the moving mechanism is used for moving the moving mechanism,
the two support plates are arranged on the base, one support plate is connected with the first sliding chute in a sliding manner and is in transmission connection with the moving mechanism;
the support plate is provided with a plurality of second sliding grooves which are arranged at intervals around the circumference; each supporting plate is provided with a cylindrical positioning column, and the center of each positioning column is coaxial with the circumferential direction;
the two clamping parts are respectively arranged on the two supporting plates; the clamping part includes:
a fixing plate disposed on the support plate;
the moving plate is connected with the second sliding groove in a sliding manner;
the clamping plate is connected with the moving plate;
the screw rod is in threaded connection with the fixed plate and is in rotary connection with the movable plate.
2. The stainless steel seamless tube stretching device according to claim 1, wherein the clamping plate is arc-shaped.
3. The stainless steel seamless tube stretching apparatus according to claim 1, further comprising:
the first plate is positioned between the two supporting plates and is in sliding connection with the first sliding groove;
the telescopic mechanism drives the first plate to move along the first sliding groove;
an auxiliary portion, the auxiliary portion comprising:
a second plate disposed on the first plate;
a first shaft connected to the second plate;
a first support located on the first shaft;
two leveling units, two leveling unit interval arrangement for place in stainless steel seamless tube's both sides, leveling unit includes:
the extrusion piece is connected with the first supporting piece through the connecting rod.
4. A stainless steel seamless tube drawing apparatus according to claim 3 wherein said extrusion is tapered with a smaller diameter at the end remote from the connecting rod.
5. A stainless steel seamless tube stretching device according to claim 3, wherein a third chute is provided on the first support member;
the leveling unit further includes:
a second support disposed on the first support;
the sliding rod is in sliding connection with the second supporting piece;
the sliding block is connected with the sliding rod and is in sliding connection with the third sliding groove;
the first spring is sleeved on the sliding rod, one end of the first spring is connected with the sliding block, and the other end of the first spring is connected with the second supporting piece; wherein,,
the connecting rod is connected with the sliding block.
6. A stainless steel seamless tube stretching apparatus according to claim 3, wherein the first shaft is rotatably connected to the second plate;
the auxiliary part further comprises a fixing mechanism for fixing the first shaft;
the first support piece and the leveling units are multiple, the first support piece and the leveling units are arranged along the circumferential spacing part of the first shaft, and the distance between the two extrusion pieces is gradually reduced along the circumferential direction of the first shaft.
7. The stainless steel seamless tube stretching device according to claim 6, wherein a fixing sleeve is arranged on one second plate, and a first limit groove is arranged in the fixing sleeve; the first limit groove is parallel to the first shaft;
the auxiliary portion further includes:
the movable ring is positioned in the fixed sleeve, a first limiting block is arranged on the movable ring, and the first limiting block is movably positioned in the first limiting groove; the movable ring is sleeved on the first shaft, a second limit groove is formed in the inner wall of the movable ring, and the second limit groove is parallel to the first limit groove;
the second limiting block is located on the first shaft and is movably located in the second limiting groove.
8. The stainless steel seamless tube stretching device according to claim 8, wherein the auxiliary portion further comprises a second spring, the second spring is sleeved on the fixing sleeve, one end of the second spring is connected with the movable ring, the other end of the second spring is connected with the second plate, and the second spring is in a stretched state.
9. A stainless steel seamless tube drawing apparatus according to claim 3, wherein the number of said auxiliary portions is plural, the plural auxiliary portions are arranged at intervals along said first slide groove, and the first axes of any two of said auxiliary portions are arranged non-parallel.
10. A method for stretching a stainless steel seamless tube, characterized in that the apparatus according to claims 1-9 is used.
CN202310240650.2A 2023-03-14 2023-03-14 Stainless steel seamless pipe stretching device and stretching method Pending CN116296812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310240650.2A CN116296812A (en) 2023-03-14 2023-03-14 Stainless steel seamless pipe stretching device and stretching method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310240650.2A CN116296812A (en) 2023-03-14 2023-03-14 Stainless steel seamless pipe stretching device and stretching method

Publications (1)

Publication Number Publication Date
CN116296812A true CN116296812A (en) 2023-06-23

Family

ID=86835564

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310240650.2A Pending CN116296812A (en) 2023-03-14 2023-03-14 Stainless steel seamless pipe stretching device and stretching method

Country Status (1)

Country Link
CN (1) CN116296812A (en)

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