Unlock instant, AI-driven research and patent intelligence for your innovation.

Rolling process of male connecting plate for bridge truss

A technology of trusses and connecting plates, which is applied in the field of male head plates, can solve the problems of poor cross-sectional shape consistency, high cost, and long production cycle, and achieve the effects of good consistency, low-cost manufacturing, and improved efficiency

Inactive Publication Date: 2009-02-04
NO 3 STEEL ROLLING CO LTD ANSHAN
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the forging re-machining method are long production cycle, high cost, and poor cross-sectional shape consistency

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] A rolling method for producing a bridge truss connecting plate male head plate, the method comprises the following steps:

[0018] 1) The Q345B continuous casting billet shall be inspected according to the GB1591-94 standard;

[0019] 2) Cut the qualified billets into specified lengths and send them to the heating furnace for heating. The temperature in the heating section is controlled at 1200-1250°C, the temperature in the soaking section is controlled at 1150-1200°C, and the atmosphere in the furnace is a neutral flame;

[0020] 3) Provisions for rolling passes, rolling temperature, roll gap value, and roll diameter jump value;

[0021] ①The 1st-2nd pass is the preliminary rolling process, the rolling start temperature is 1150-1200℃, the roll gap value is 10mm, and the roll diameter jump value is 2mm;

[0022] ② The 3rd-4th pass is a semi-finishing process, the rolling start temperature is 1100-1000°C, the 4th pass is an isothermal rolling temperature of 850-900°C, ...

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
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The rolling process of male connecting plate for bridge truss includes the following steps: cutting the billet into required length; heating in a heating furnace; and rolling in required pass, temperature, roll gap and radial runout. The present invention has the advantages of precisely controlled rolling, high product precision and very high production efficiency.

Description

technical field [0001] The invention relates to a method for producing a No. 10 channel steel high-strength welding and high-precision connection male plate for bridges. Background technique [0002] In the production of suspension rods for large steel structural components (mainly bridges), the connecting plates of the No. 10 channel steel used include male head plates, female head plates, and support plates. In the past, square steel was forged and then machined. The purpose is to refine the grain, increase the yield strength, and obtain a cross-sectional shape that matches the channel steel. The disadvantages of the forging re-machining method are long production cycle, high cost, and poor cross-sectional shape consistency. Contents of the invention [0003] In order to solve the problems existing in the prior art, the object of the present invention is to provide a production method using the isothermal steel rolling process and precisely controlling the rolling, and ...

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): B21B37/74B21B37/58B21B15/00B21B1/22C21D9/70C21D11/00B21D1/00
Inventor 洪振启洪振奎洪海
Owner NO 3 STEEL ROLLING CO LTD ANSHAN