Method for rolling rods and wires through negative tolerance

A bar and wire rod and negative tolerance technology, applied in the field of negative tolerance rolling rod and wire rod, can solve the problem of not considering the influence of material production, and achieve the effect of promoting enterprise sales and improving economic benefits

Pending Publication Date: 2022-03-15
KUNMING UNIV OF SCI & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it does not take into account other influences on the production of materials such as climate factors

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 for rolling rods and wires through negative tolerance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Roll a batch of 1000 tons of steel bars with a diameter of 6-12mm and a length of 6m. The 600 tons of steel bars are transported to Nanjing City, Jiangsu Province at a temperature of 30°C, and 400 tons of steel bars are transported to the Daxinganling area of ​​Heilongjiang Province at a temperature of -40°C. Central District.

[0026] Such as figure 1 As shown, the method for rolling rods and wires with negative tolerance, the steps include:

[0027] Step 1. Put the steel into the heating furnace for heat treatment of preheating, heating and soaking, specifically:

[0028] 1.1. Preheating section: preheat for 10 minutes at a temperature of 300°C;

[0029] 1.2. Heating section: continue to raise the temperature to 1100°C for 20 minutes;

[0030] 1.3. Soaking section: continue soaking at a temperature of 900°C for 10 minutes;

[0031] Step 2. Roll the steel after the heat treatment in step 1 through pinch rollers to become steel bars to be cut; the rolling bending fo...

Embodiment 2

[0043] Roll a batch of 1000 tons of steel bars with a diameter of 14-20mm and a length of 9m. The 700 tons of steel bars are transported to Guangzhou City, Guangdong Province at a temperature of 40°C, and the 300 tons of steel bars are transported to Changchun City of Jilin Province at a temperature of -20°C.

[0044] Such as figure 1 As shown, the method for rolling rods and wires with negative tolerance, the steps include:

[0045] Step 1. Put the steel into the heating furnace for heat treatment of preheating, heating and soaking, specifically:

[0046] 1.1. Preheating section: preheat for 13 minutes at a temperature of 350°C;

[0047] 1.2. Heating section: continue to raise the temperature to 1150°C for 25 minutes;

[0048] 1.3. Soaking section: continue soaking at 950°C for 15 minutes;

[0049] Step 2. Roll the steel after the heat treatment in step 1 through the pinch rollers to become the steel bars to be cut; the rolling bending force is set to 1900KN, and the steel b...

Embodiment 3

[0061] A batch of 1,000 tons of steel bars with a diameter of 22-25mm and a length of 12mm were rolled. The 550 tons of steel bars were transported to Dubai at a temperature of 50°C, and the 450 tons of steel bars were transported to Shenyang City, Liaoning Province at a temperature of 0°C.

[0062] Such as figure 1 As shown, the method for rolling rods and wires with negative tolerance, the steps include:

[0063] Step 1. Put the steel into the heating furnace for heat treatment of preheating, heating and soaking, specifically:

[0064] 1.1. Preheating section: preheat for 15 minutes at a temperature of 400°C;

[0065] 1.2. Heating section: continue to raise the temperature to 1200°C for 30 minutes;

[0066] 1.3. Soaking section: continue soaking at 1000°C for 20 minutes;

[0067] Step 2. Roll the steel after the heat treatment in step 1 through the pinch rollers to become the steel bar to be cut; the rolling bending force is set to 2800KN, and the steel bar to be cut afte...

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 invention relates to a method for rolling rods and wires through negative tolerance, and belongs to the technical field of pressure machining in the metallurgical engineering industry. The steel is put into a heating furnace to be subjected to heat treatment including preheating, heating and soaking; the steel subjected to heat treatment passes through a pinch roll and then is rolled into a to-be-cut steel bar; the to-be-cut reinforcing steel bar is subjected to flying shearing, the actual shearing length of the reinforcing steel bar is influenced by thermal expansion and cold contraction in the flying shearing process, and the actual shearing length L0 of the reinforcing steel bar is obtained through calculation. By adopting the method for rolling, the sizing rate of the cold flying shear is improved, the shearing precision is improved, and the finished product quality is improved.

Description

technical field [0001] The invention relates to a method for rolling rods and wires with a negative tolerance, and belongs to the technical field of pressure processing in the metallurgical engineering industry. Background technique [0002] Since it is difficult to achieve the engineering size in actual production, there is a certain allowable difference between the actual size and the nominal size in the standard, which is called the deviation. A negative value of the difference is called a negative bias, and a positive value is called a positive bias. The sum of the absolute values ​​of the allowable positive and negative deviations specified in the standard is called the tolerance. In order to achieve better economic benefits under the premise of ensuring product quality, it will be particularly important for iron and steel enterprises to precisely control negative tolerances. One of the advanced rolling processes for rolling and cutting bars with negative tolerances. ...

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 Applications(China)
IPC IPC(8): B21B1/16B21B15/00B21B37/58B21F11/00B23P23/04C21D6/00
CPCB21B1/16B21B37/58B21B15/0007B21F11/00C21D6/00B23P23/04
Inventor 周晓雷晏昊立王云鹏方浩宇李珍英张闯陈鹏张少博施哲张桂芳杨晓源阴树标黄帮福漆鑫
Owner KUNMING UNIV OF SCI & TECH
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