Steel wire rod for aluminum-containing steel fibers and used for deep drawing, and rolling method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A steel wire rod, aluminum steel technology, applied in the direction of manufacturing tools, heat treatment process control, heat treatment equipment, etc., can solve the problem of describing the difficulty of mechanical peeling of iron oxide scale thickness, etc., to achieve significant economic and social benefits, mechanical properties Excellent, the effect of improving deep drawing performance
Inactive Publication Date: 2020-08-04
ZENITH STEEL GROUP CORP +1
View PDF2 Cites 5 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] The Chinese invention patent with application number 201610960728.8 discloses a production process of Ti-containing fiber steel wire rod as steel for aluminum-free steel fiber. By optimizing the chemical composition of fiber steel wire rod and the cooling rate of the wire rod on the air cooling line, the Tensile strength is between 380-420MPa, while maintaining good elongation and area shrinkage, elongation ≥ 30%, area shrinkage ≥ 78%, broken wire rate is controlled within 0.5 times / ton, and for demanding For steel users of high-grade steel fibers, the patent does not describe the thickness of iron oxide scale and the difficulty of mechanical peeling, and the technical indicators such as plasticity index and broken wire rate within 0.5 times / ton still cannot meet their special requirements
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0032] The composition of the continuous casting slab in Example 1 is: [C]: 0.045%, [Si]: 0.08%, [Mn]: 0.30%, [P]: 0.011%, [S]: 0.006%, [Al]: 0.026%, [Ti]: 0.020%, [B]: 0.0055%, [N]: 46ppm, and the rest are Fe and unavoidable impurities.
[0033] (1) The heating of the slab is divided into three sections for heating, which are heating section one, heating section two and soaking section in turn. Among them, the heating temperature of the heating section is 725-785°C; the heating temperature of the second heating section is 923-988°C; the temperature of the soaking section is 1030-1070°C, and the total heating time is 150min;
[0034] (2) High-pressure water descaling is used to remove scale, the pressure is 18MPa, the rolling start temperature is 910-970°C, and the tapping rhythm is ≥60 seconds;
[0035] (3) Strictly control the process parameters of the wire rod during the rolling process. The temperature before finishing rolling is 880-920°C, the temperature after finishing...
Embodiment 2
[0038] The composition of the continuous casting slab in Example 2 is: [C]: 0.052%, [Si]: 0.07%, [Mn]: 0.29%, [P]: 0.012%, [S]: 0.007%, [Al]: 0.025%, [Ti]: 0.021%, [B]: 0.0054%, [N]: 45ppm, and the rest are Fe and unavoidable impurities.
[0039] The difference between the continuous casting slab production process of Example 2 and Example 1 is that the temperature before the sizing unit is 885-915°C, the spinning temperature is 900-920°C, and the rest of the operations are the same as in Example 1.
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
Property
Measurement
Unit
tensile strength
aaaaa
aaaaa
tensile strength
aaaaa
aaaaa
elongation
aaaaa
aaaaa
Login to view more
Abstract
The invention belongs to the field of metal materials, and specifically discloses a steel wire rod for aluminum-containing steel fibers and used for deep drawing, and a rolling method thereof. A continuous casting billet comprising specific components is obtained according to an aluminum-containing pure steel smelting process, reasonable heating temperature and heating time of the continuous casting billet are controlled in a heating furnace, and the process parameters of the wire rod in a rolling process and the cooling process parameters of the wire rod on a Stelmor cooling line are optimized, so that the produced wire rod for the steel fibers is high in universality, uniform in structure, small in crystal grain, excellent in mechanical property, and good in plasticity index, and an ironoxide sheet has a thickness of 10-20[mu]m, and is suitable for mechanical shelling and low in wire fracture; and the wire rod produced by the method has tensile strength Rm of 350-390MPa, percentageelongation A of not less than 40% after fracture, area reduction Z of not less than 80%, and ferrite grain size of 7-8, the wire fracture in a drawing process of a user can be controlled to be less than 0.25 times per ton, and the technical requirement of a wire rod for high-grade steel fibers is completely met.
Description
technical field [0001] The invention belongs to the field of metal material production, and in particular relates to a steel wire rod for deep drawing aluminum-containing steel fibers and a rolling method thereof. Background technique [0002] Aluminum-containing steel fiber steel is mainly used to make steel fiber. Steel fiber is a new type of high-performance building material with high tensile strength, uniform dispersion, no agglomeration, and good bonding performance with concrete. Features, mainly used in the manufacture of steel fiber reinforced concrete. Compared with ordinary concrete, the strength, tensile and bending resistance, toughness, impact resistance, service life and other properties of steel fiber reinforced concrete are greatly improved, thus replacing the threaded steel skeleton. It is called the third-generation concrete, which is convenient for construction and can be It greatly simplifies preparation work and labor force, increases structural safety...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more