Mixing method of high quality low phosphor and sulfur high-alloy steel

A high-alloy steel and high-quality technology, applied in the field of metallurgical industry, can solve the problems of phosphorus, five harmful elements, and trace harmful elements that cannot be controlled

Active Publication Date: 2008-12-24
DAYE SPECIAL STEEL CO LTD
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of this invention is to solve the problem that phosphorus, five harmful elements and trace harmful elements cannot be controlled in the pro

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
  • Mixing method of high quality low phosphor and sulfur high-alloy steel
  • Mixing method of high quality low phosphor and sulfur high-alloy steel

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Using the present invention to produce H13 steel pipe mandrel electroslag steel, the process operation procedures are as follows:

[0031] One furnace is planned to be smelted, and the technical standard is in accordance with GB1299-2000. Two trays of pouring, one tray of 3t×4 steel ingot. Pour the remaining molten steel 1.2t electrode rod.

[0032] 1. Chemical composition (%)

[0033] User requirements for the basic composition of the finished product (%):

[0034] Grade

[0035] Requirements for trace elements (10 -6 ):

[0036] Element

[0037] The composition of the finished product smelted by the refining furnace is controlled according to the following table (%):

[0038] C

[0039] 2. Material preparation

[0040] 1. Furnace charge company: prepare 20t high-quality pig iron (As≤0.010%, Sn≤0.010%, Sb≤0.005%, Cu≤0.010%) and 10t high-quality 20 pipe cutting heads before smelting.

[0041] 2. Ferroalloy: high Cr 1t, low Cr 1.5t (P, S content...

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 provides a mixing mix method for high alloy steel with high quality and low phosphorus and sulfur. In the invention, iron water or pig iron smelted from a blast furnace is put in an electric furnace or a revolving furnace for smelting by the continuous oxidation method; in particular, at the same time, an iron alloy or return materials are put in another induction furnace or electric furnace for smelting by the continuous loading method; and the iron water smelted by the electric furnace or the revolving furnace and the iron alloy smelted by the induction furnace or the electric furnace are mixed in a molten steel container for external furnace refining and ingot mold casting. The mixing method of the invention has the advantages of simpleness, standard, low cost, and capability of continuous refining the high alloy steel with high quality and the alloy ratio of more than 5 percent, completely solves the problems of uncontrollable phosphorus, five-harmful elements and harmful microelements in steel in the production of the high alloy steel by the prior smelting method; therefore, the mixing method is particularly suitable for the smelting of mould steel, nonrust heat resisting steel, rotor steel, valve steel, high-speed tool steel, high temperature alloy, etc.

Description

(1) Technical field: [0001] The invention relates to the metallurgical industry, and relates to a mixing method for high-quality low-phosphorus-sulfur high-alloy steel. (two) background technology: [0002] High-alloy steel mainly refers to tool and die steel, stainless steel, heat-resistant steel, blade steel, valve steel, high-speed tool steel, high-temperature alloy and its new products, etc. The smelting of these steels, alloys or their electroslag base metals usually adopts the following four methods: [0003] The first method: non-vacuum induction furnace or vacuum induction furnace. [0004] The second method: non-vacuum induction furnace or vacuum induction furnace + refining outside the furnace (LF, VD, VOD, RH are collectively referred to as ladle refining furnaces, and its operation is called secondary smelting or ladle refining; LF: Argon gas is blown at the bottom of the ladle during refining , the upper part is heated by a three-phase electrode; VD: Argon gas...

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
IPC IPC(8): C22C33/04C21B5/00C21C7/04
Inventor 文武柳学胜陈长西刘文德
Owner DAYE SPECIAL STEEL CO LTD
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