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

A kind of MC precipitation-enhanced high-strength refractory and corrosion-resistant steel and its manufacturing method

A manufacturing method and technology of corrosion-resistant steel, applied in the field of steel for building structures, can solve problems such as increasing construction difficulty, increasing construction cost, and prolonging construction period, and achieve excellent resistance to marine atmospheric corrosion, enhanced fire resistance, and improved thermal stability of tissue. Effect

Active Publication Date: 2019-11-22
CENT IRON & STEEL RES INST +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of anti-corrosion, fire-resistant coatings and fire-resistant structures not only increases the difficulty of construction, prolongs the construction period, increases construction costs, but also causes pollution to the environment

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
  • A kind of MC precipitation-enhanced high-strength refractory and corrosion-resistant steel and its manufacturing method
  • A kind of MC precipitation-enhanced high-strength refractory and corrosion-resistant steel and its manufacturing method
  • A kind of MC precipitation-enhanced high-strength refractory and corrosion-resistant steel and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0047] Example 1-1: Heating the cast slab to 1180°C, holding time for 2 hours, and starting rough rolling at 1150°C, after 3 passes of rough rolling, the finishing temperature of rough rolling is 1065°C, and the starting temperature of finish rolling is 973 ℃, the finishing rolling temperature is 873℃, after 4 passes of finishing rolling, the thickness of the steel plate is rolled to 40mm; the steel plate is laminarly cooled to 485℃ at a cooling rate of 20℃ / s, and then air-cooled to room temperature.

Embodiment 1-2

[0048] Example 1-2: Heating the cast slab to 1180°C, holding time for 2h, rough rolling start temperature is 1150°C, after 3 passes of rough rolling, rough rolling finish rolling temperature is 1094°C, finish rolling start temperature is 982 ℃, the finishing rolling temperature is 881℃, after 5 passes of finishing rolling, the thickness of the steel plate is rolled to 30mm; the steel plate is laminarly cooled to 487℃ at a cooling rate of 22℃ / s, and then air-cooled to room temperature.

Embodiment 2-1

[0049] Example 2-1: Heating the cast slab to 1180°C, holding time for 2 hours, and starting rough rolling at 1150°C, after 3 passes of rough rolling, the finishing temperature of rough rolling is 1075°C, and the starting temperature of finish rolling is 983 ℃, the finish rolling temperature is 907℃, after 6 passes of finish rolling, the thickness of the steel plate is rolled to 16mm; the steel plate is laminarly cooled to 443℃ at a cooling rate of 26℃ / s, and then sent to 450℃ for heat preservation After holding for 0.5h, the furnace is cooled to 200°C, and finally it is taken out of the furnace and air-cooled to room temperature.

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
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses MC-separate out enhanced high strength fireproof corrosion-resisting steel and a manufacturing method thereof and belongs to the technical field of steel for building structures. By means of a low C design, fireproofness is jointly guaranteed by room temperature bainite structure tissue control and high-temperature separate out of nano MC particles in case of a fire by Ni corrosion-resisting element alloying and Mo-Nb-V compound microalloying. The steel is prepared from the following components in percentage by weight: 0.01-0.04wt.% of C, 0.10-0.30 wt.% of Si, 0.10-0.50wt.% of Mn, 3.00-5.00 wt.% of Ni, 0.20-0.40 wt.% of Cu, 0.15-0.20 wt.% of Mo, 0.01-0.10 wt.% of Nb, 0.01-0.08 wt.% of V, 0.010-0.030 wt.% of Ti, 0.015-0.035 wt.% of Al, less than 0.015 wt.% of P, less than 0.010 wt.% of S and the balance Fe and inevitable impurities. The manufacturing method comprises converter or electric furnace smelting, and casting is continuous casting or die casting. The MC-separate out enhanced high strength fireproof corrosion-resisting steel can be used for steel structural buildings.

Description

technical field [0001] The invention belongs to the technical field of steel for building structures, and in particular relates to a MC precipitation-enhanced high-strength refractory and corrosion-resistant steel and a manufacturing method thereof. Background technique [0002] Steel structure buildings have the advantages of light weight, fast construction, large space, comfort and beauty. However, first of all, the weather resistance of ordinary structural steel is not good, and it is often necessary to apply anti-corrosion coatings, especially in the harsh marine atmospheric corrosion environment of coastal or island reefs, the cost of anti-corrosion maintenance of steel structure buildings is relatively high, and even very difficult. Secondly, ordinary steel structures have poor fire performance, the yield strength drops sharply above 350°C, and the high temperature load-bearing capacity is insufficient. Therefore, fire safety requires the steel structure to be protect...

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): C22C38/02C22C38/04C22C38/08C22C38/16C22C38/12C22C38/14C22C38/06C21D8/02C21D8/00
CPCC21D8/005C21D8/0226C21D2211/002C21D2211/004C21D2211/008C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C22C38/16
Inventor 李昭东王鑫曹燕光雍岐龙陈润农陈颖王慧敏杨忠民沈俊昶
Owner CENT IRON & STEEL RES INST