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Guide board for seamless steel pipe punching machine

A technology for seamless steel pipes for punching machines, applied in the field of guide plates for punching machines, can solve the problems of poor wear resistance, low service life, and high cost.

Active Publication Date: 2008-12-10
SHANDONG SIFANG STEEL PIPE EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problems existing in the use of the seamless steel pipe piercer guide plate and develop a seamless steel pipe piercer guide plate of a new material, which is used to replace the currently used piercer guide plate to solve The guide plate of the piercing machine has poor wear resistance, low service life, easy breakage and high price of the guide plate, which is difficult for the manufacturer to bear in the high temperature working process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Manufacture a set of guide plates for φ460 punching machine, 2 pieces in total. The composition of the selected material is as follows in weight percentage:

[0029] C

Si

mn

P

S

Cr

Ni

Nb

RE

Fe

1.80

0.80

0.80

0.025

0.029

28

5.5

3.0

0.03

the remaining

[0030] Select the ratio of raw materials according to the composition requirements in the table, carry out conventional smelting in an intermediate frequency induction furnace, and perform conventional sand casting to obtain the required blank, and then carry out conventional machining to produce a guide plate for φ460 punching machine.

[0031] The guide plate for the φ460 perforator of embodiment 1 has a finished product weight of 452kg / piece. The hardness of this embodiment is HRC37~41. The experiment was carried out on the internationally advanced φ460 piercer introduced i...

Embodiment 2

[0033] Manufacture a set of guide plate for φ245 punching machine, 2 pieces in total. The composition of the selected material is as follows in weight percentage:

[0034] C

Si

mn

P

S

Cr

Ni

Nb

RE

Fe

1.71

0.62

0.80

0.03

0.03

27

5.0

1.7

0.03

the remaining

[0035] According to the above composition requirements, the ratio of raw materials is selected, conventional melting is carried out in an intermediate frequency induction furnace, and conventional sand casting is carried out to obtain the required blank, and then conventional mechanical processing is carried out to produce a guide plate for a φ245 punching machine.

[0036] The guide plate for the φ245 piercing machine of embodiment 2 has a finished product weight of 260kg / piece. The hardness of this embodiment is HRC37~39. The experiment was carried out on the internationally advanced φ245 pier...

Embodiment 3

[0038] Manufacture a set of guide plates for φ219 punching machine, 2 pieces in total. The composition of the selected material is as follows in weight percentage:

[0039] C

Si

mn

P

S

Cr

Ni

Nb

RE

Fe

1.60

0.60

0.80

0.03

0.03

26.0

5.5

0.10

0.02

the remaining

[0040] According to the composition requirements in the above table, the ratio of raw materials is selected, conventional melting is carried out in an intermediate frequency induction furnace, and conventional sand casting is carried out to obtain the required blank, and then conventional mechanical processing is carried out to produce a guide plate for φ219 piercing machine.

[0041] The guide plate for the φ219 punching machine of embodiment 3 has a finished product weight of 43.5kg / piece. The hardness of this example is HRC35~37. The experiment was carried out on the internationally advanced φ219 p...

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Abstract

This invention discloses a new guide plate for seamless steel tube piercer. The comprised components and proportion by weight are as follows: C: 1.6-1.8%,Si: 0.6-0.8%,Mn: 0.6-0.8%,P: <=0.04%,S: <=0.04%,Cr: 26-28%,Ni: 4.5-5.5%,Nb: 0.1-3.0%, RE: 0.02-0.03%, the rest is Fe. It is characterized in that the problems of poor wear resistance at high temperature, short service life, easy broken and high price are solved in this invention, the working property and utilization effect are better than current conductive board, the service life is 3-5 times of that of current guide plate, and the fabricating cost is only 1 / 5-1 / 6 of that of imported conductive board.

Description

technical field [0001] The invention relates to a spare part for a steel pipe punching machine, in particular to a guide plate for a punching machine for producing seamless steel pipes. Background technique [0002] The guide plate for piercing machine is a process spare part that consumes a lot in the production of seamless steel pipes. The quality and service life of the guide plate directly affect the quality and production efficiency of seamless steel pipes. In addition to its guiding role in the piercing process of the seamless steel pipe billet, it also needs to participate in the high temperature deformation during the piercing process of the seamless steel pipe billet. Compared with the simple guiding function of the guide plate in other steel production, the working environment is worse: in Under the high temperature of about 1100 ℃, it bears a lot of impact force, compressive stress and friction force. [0003] The materials of the currently used perforator guide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/48
Inventor 袁厚之张凝刘行一王平
Owner SHANDONG SIFANG STEEL PIPE EQUIP MFG
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