Special-shaped wire section forming device

A wire and special-shaped technology, applied in the direction of metal rolling, can solve problems such as wire bending, and achieve the effect of suppressing bending and improving manufacturing

Inactive Publication Date: 2010-09-08
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a forming device for special-shaped wire rods, which solves the problem of bending of the wire rods before and after forming special-shaped wire rods, and has good formability and high dimensional accuracy.

Method used

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  • Special-shaped wire section forming device

Examples

Experimental program
Comparison scheme
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Embodiment

[0051] Such as figure 1 As shown, rolling is carried out by adopting the forming device of the following special-shaped wire rods: a pressure accumulating jumping roller 10, a front roller straightening machine (up and down direction) 2, a front roller straightening machine (horizontal direction) 2, and a front roller straightening machine (horizontal ) 3, in its rear segment, the forming units arranged in series by the non-driven four-roller cross-shaped roll die 4 and the power-driven four-roller cross-shaped roll die 5 are arranged in series, and 2 units are arranged in series, and in the rear segment of the forming unit, Equipped with a finishing unit consisting of a non-driven four-roller cross-shaped roll die 6, a rear roller leveler (vertical direction) 7, a rear roller straightener (horizontal direction) 8, and a double drum winch 12 , winding machine 9. Among the raw materials, 0.8%C-17%Cr steel (mass%) with a diameter of Φ1.38mm is used, and it is shaped as figure...

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Abstract

The object of the invention is to provide a special-shaped wire section forming device, which can solve the problem of the bending generated on the wire section before and after forming, the device has high dimension accuracy and good forming performance. The special-shaped wire section forming device has a four-roller type cross-shaped roller module as a forming unit, preferably, straighteners are respectively provided at a front section and a rear section of the forming unit, on the forming unit, a non-driven four-roller type cross-shaped roller module and a four-roller type cross-shaped roller module driven by the power are provided in series.

Description

technical field [0001] The present invention relates to a forming device for a special-shaped wire, which is suitable for forming a special-shaped cross-section wire used for engine piston rings and the like. Background technique [0002] Due to the development direction of high rotation and high output of engines in recent years, high-load piston rings have been converted from cast iron to steel, and special steel such as high-alloy stainless steel has been used. [0003] Among the piston rings, there are oil rings with a cross-sectional shape approximately H-shaped, side rails with different cross-sectional shapes left and right, a spacer ring, and a compression ring, each of which has a special-shaped cross-section. Among such piston rings, there are piston rings with a complex and irregular cross-section approximately H-shaped and used as oil rings, and strict dimensional accuracy is required for the wire rod for piston rings used as a raw material. [0004] At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/04B21B1/16
Inventor 水谷行隆
Owner HITACHI METALS LTD
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