Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Composite roll for welded steel pipe and cold-formed steel and preparation method thereof

A technology of composite roll and cold-formed steel, applied in the field of roll manufacturing, can solve the problems of affecting the speed and accuracy of end face finishing, unable to achieve bimetallic composite, difficult machining, etc., to ensure performance, shorten processing cycle, improve The effect of machinability

Active Publication Date: 2022-03-22
SHANDONG SIFANG STEEL PIPE EQUIP MFG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the intermittent turning caused by the screw holes during the end face finish turning, the speed and accuracy of the end face finish turning are affected
Therefore, the current manufacturing of welded pipes and cold-formed steel rolls has problems such as high material cost, difficult machining, low material utilization rate, high energy consumption, long processing cycle, and the inability to achieve bimetallic composites.

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
  • Composite roll for welded steel pipe and cold-formed steel and preparation method thereof
  • Composite roll for welded steel pipe and cold-formed steel and preparation method thereof
  • Composite roll for welded steel pipe and cold-formed steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, Example 1 is the fine-formed lower roll for manufacturing welded pipe units. The roll length is 240mm, the maximum outer diameter is Ф380mm, the minimum outer diameter is Ф220mm, the inner hole diameter is Ф125mm, the weight of the finished product is 105kg / piece, and there are two M12×40 on each end. The hoisting screw holes and 4 M12×25 assembly screw holes, the maximum position of the screw hole that can be processed is Ф230.

[0044] The graphite steel matrix components of Example 1 are shown in Table 1 by weight percentage (%Wt).

[0045] Table 1 graphite steel matrix components by weight percentage (%Wt)

[0046] C Si mn P S Ni Al Zr Ce RE Fe 2.00 1.40 0.25 0.015 0.021 0.51 0.22 0.06 0.03 0.02 margin

[0047] Example 1 The working layer of the welded pipe unit uses the fine-forming lower roll to add tungsten carbide particles into the molten graphite steel matrix for casting. The amount of tu...

Embodiment 2

[0053] Such as figure 2 As shown, Example 2 is the rough forming upper roll for manufacturing welded pipe unit, the roll length is 410mm, the maximum outer diameter is Ф660mm, the minimum outer diameter is Ф400mm, the inner hole diameter is Ф125mm, and the weight of the finished product is 694kg / piece. There are 2 M16×60 hoisting screw holes and 4 M12×40 assembly screw holes on each of the two ends, and the maximum screw hole processing position is Ф245.

[0054] Example 2 The components of the graphite steel matrix are shown in Table 2 by weight percentage (%Wt).

[0055] Table 1 graphite steel matrix components by weight percentage (%Wt)

[0056] C Si mn P S Ni Al Zr Ce RE Fe 1.70 1.60 0.22 0.014 0.017 0.58 0.27 0.05 0.04 0.03 margin

[0057] Example 2 The working layer of the rough forming upper roll blank for the welded pipe unit uses graphite steel matrix melt, the amount of tungsten carbide particles added is 17% of the weig...

Embodiment 3

[0063] Such as figure 1 As shown, Example 3 is for the production of precision-formed side rolls for welded pipe units. The roll length is 160mm, the maximum outer diameter is Ф240mm, the minimum outer diameter is Ф210mm, the inner hole diameter is Ф95mm, and the weight of the finished product is 33kg / piece. There are 2 M12×25 hoisting screw holes and 4 M10×20 assembly screw holes on each of the two ends, and the maximum screw hole processing position is Ф150.

[0064] Example 3 The components of the graphite steel matrix are shown in Table 2 by weight percentage (%Wt).

[0065] Table 1 graphite steel matrix components by weight percentage (%Wt)

[0066] C Si mn P S Ni Al Zr Ce RE Fe 1.50 1.00 0.3 0.02 0.019 0.42 0.25 0.04 0.05 0.03 margin

[0067] The working layer of the fine-formed side roll blank of the welded pipe unit is cast with graphite steel matrix melt by adding tungsten carbide particles with a weight of 15% of the work...

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

PropertyMeasurementUnit
melting pointaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite roll for welded steel pipe and cold-formed steel and a preparation method thereof. The roll is composed of a working layer and a core. Cast with graphite steel matrix material, the matrix components of the roll are: C: 1.50~2.1%, Si: 0.50~1.60%, Mn: 0.20~0.40%, Ni: 0.40~0.60%, Al: 0.10~0.30%, RE : 0.02~0.03%, Zr: 0.03~0.08%, Ce: 0.01~0.05%, P and S≤0.030%, the balance is Fe; the invention can greatly improve the wear resistance and impact resistance of steel pipes and cold-formed steel rolls and The service life of the roll is improved, the utilization rate of the material is improved, and the production cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of roll manufacturing, in particular to a composite roll for welded steel pipes and cold-formed steel and a preparation method thereof. Background technique [0002] In recent years, due to the rapid development of the welded pipe and cold-formed steel industry, the consumption of rolls used in the production of welded pipe and cold-formed steel has leapt to the first place in the world. Most of the rolls used in the production of welded pipes and cold-formed steel are non-cylindrical variable-diameter special-shaped rolls, that is, the outer working surface is a non-cylindrical variable-diameter curved surface. The welded pipe and cold-formed steel rolls are the most important tools and molds for the production of welded pipes and cold-formed steel, and are products that have developed rapidly in recent years. [0003] There are two types of forming methods for existing welded pipes and cold-formed steel r...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/08C22C38/14B22D19/00C21D1/18C21D1/26C21D1/28C21D5/00C21D6/00C21D9/38C22C37/10B21B27/02B22D13/02
CPCC22C38/02C22C38/04C22C38/06C22C38/08C22C38/005C22C38/14C22C37/10B22D13/02B22D19/00C21D9/38C21D6/001C21D6/005C21D6/008C21D5/00C21D1/26C21D1/28C21D1/18B21B27/02B21B27/024
Inventor 袁厚之张凝刘行一王平
Owner SHANDONG SIFANG STEEL PIPE EQUIP MFG
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com