Method and apparatus for forming special-shaped wire material

A forming device and forming method technology, applied in metal rolling and other directions, can solve the problem that the number of forming times cannot be reduced, and achieve the effect of reducing the number of forming times and increasing the filling rate

Inactive Publication Date: 2004-06-30
HITACHI METALS LTD
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Like this, because the power that is applied on the wire rod increases, and the wire rod is extended, as shown in Figure 3, the material of the special-shaped cross-section with circular arch (web) 8 and edge (flange) 9 is formed. In this case, the wire only extends in the length direction, and t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for forming special-shaped wire material
  • Method and apparatus for forming special-shaped wire material
  • Method and apparatus for forming special-shaped wire material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0064] [Example]

[0065] Using the forming apparatus for the special-shaped wire having the above-mentioned structure, mass production molding of the special-shaped piston ring having the cross-sectional shape shown in FIG. 8 was performed from 0.65C-13Cr steel. During molding, the tension of the material to be molded between the front Tek head 16 and the rear Tek head 17 is controlled to be about 200N, and the tension between the molding unit 15 and the final processing Tek head 21 is about 100N.

[0066] As a result, there was no annealing between the two moldings, and a high-precision finished product was obtained with both the edge dimension H and the width W having a dimensional accuracy of 10 μm.

[0067] In the case of using a conventional apparatus to manufacture the special-shaped piston ring of the shape in this embodiment, three non-drive Tek heads arranged in tandem are required for drawing and forming. Also, the drawing must be divided into three times, and two ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention provides a forming method of shaped wire material and its equipment. Said equipment has a forming unit formed from combination of non-driven front part 4 square roll turks heads and power-driven rear part 4 square roll turks heads, and the rear portion of the forming unit is equipped with successively and straight-line arranged non-driven 4 square roll turks heads with finishing roll line. The forming roll of power-driven turks head has the diameter which is above 70 times greater than height of edge of formed material, and the tension beared by formed material between the above-mentioned non-driven turks heads and power-driven turks head can be controlled below 300N. Said invention can high-effectively and high-accurately produce shaped wire material.

Description

technical field [0001] The invention relates to a special-shaped wire suitable for an engine piston ring, in particular to a forming method and device for an approximately H-shaped special-shaped wire used for an oil ring. Background technique [0002] With the development of high-speed and high-output engines, high-load piston rings are also changed from cast iron to steel, and then special steel such as high-alloy stainless steel is used. Especially in the example shown in FIG. 7 , an oil ring with complex special-shaped cross-section such as an approximate H-shaped cross-section is used, and has strict requirements on dimensional accuracy. [0003] Now, the molding of such piston rings with special-shaped cross-sections is mostly after the round wire is formed into a rectangular wire, by the non-driven 4-side roller Turk head ( Turks Head) 4 is configured in a front-to-back straight row, and is formed by drawing. Moreover, the set shape is reached after 3 to 5 repeated ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B21B1/16
Inventor 三神隆男舛形芳树唐桶隆男
Owner HITACHI METALS LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap