Unlock instant, AI-driven research and patent intelligence for your innovation.
A preparation method of high-strength toughness low-alloy wear-resistant steel for bucket teeth
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 high-strength-toughness, low-alloy technology, applied in the field of steelmaking, can solve the problems of huge indirect economic losses, short life of bucket teeth, surface peeling, etc., and achieve the effects of low cost, good toughness and extended service life.
Active Publication Date: 2017-10-20
GUILIN UNIV OF ELECTRONIC TECH
View PDF5 Cites 0 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
When contacting the material, the rapid movement of the material causes the bucket teeth to be subjected to a strong impact, and the tip of the bucket tooth is worn by the strong impact and sliding of the material, usually various furrows, deformations, etc., and the surface is easy to fall off due to wear, so The life of bucket teeth is often very short and the consumption is huge
At the same time, the indirect economic losses caused by equipment damage, downtime and production stoppage are huge and cannot be counted. It can be seen that improving the impacttoughness of excavator bucket teeth on the premise of ensuring the hardness of excavator bucket teeth will greatly improve the life of bucket teeth. , reduce costs and improve product quality has important economic significance
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
[0028] S11. Prepare pig iron, steel scrap, ferrochromium, ferromolybdenum, copper, ferrosilicon, ferromanganese, ferrochromium and rare earth elements (Re, one or more of all rare earth elements) for steelmaking, among which scrap steel and ferroalloy (Ferro-silicon, ferro-chromium, ferro-molybdenum) are pre-broken, the particle size is 10-20mm, and the composition and mass fraction of low-alloy wear-resistant steel are controlled: C: 0.38%, Si: 1.25%, Mn: 1.10%, Cr :0.77%, Mo:0.18%, Cu:0.50%, Re:0.08%, P:0-0.02%, S:0-0.01%, the rest are Fe and unavoidable impurities;
[0030] S13. Put ferrosilicon, ferromanganese, ferrochromium and rare earth elements into the ladle, then pour the inoculated molten steel into the s...
[0040] S11. Prepare pig iron, steel scrap, ferrochromium, ferromolybdenum, copper, ferrosilicon, ferromanganese, ferrochromium and rare earth elements (Re, one or more of all rare earth elements) for steelmaking, among which scrap steel and ferroalloy (Ferro-silicon, ferro-chromium, ferro-molybdenum) are pre-broken, the particle size is 10-20mm, and the composition and mass fraction of low-alloy wear-resistant steel are controlled: C:0.45%, Si:1.20%, Mn:1.30%, Cr :0.70%, Mo:0.25%, Cu:0.40%, Re:0.09%, P:0-0.02%, S:0-0.01%, the rest are Fe and unavoidable impurities;
[0041]S12. Use 1t acid induction furnace to smelt the alloy. The metal charge includes pig iron, scrap steel, ferromolybdenum, and copper. Melt the metal charge into molten steel, heat the molten steel to 1550-1590°C, and remove the slag;
[0042] S13. Put ferrosilicon, ferromanganese, ferrochromium and rare earth elements into the ladle, then pour the inoculated molten steel into the small...
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
Login to View More
Abstract
The invention discloses a method for preparing high-strength toughness low-alloy wear-resistant steel for bucket teeth. The composition and mass fraction thereof are: C: 0.35-0.45%, Si: 1.20-1.60%, Mn: 1.00-1.40%, Cr: 0.70 ‑0.90%, Mo: 0.15‑0.25%, Cu: 0.40‑0.60%, Re: 0.05‑0.10%, P: 0‑0.025%, S: 0‑0.025%, the preparation methods include: melting: smelting in an acid induction furnaceAlloy, metal charge includes pig iron for steelmaking, scrap steel, ferromolybdenum and copper, smelted into molten steel, then put ferrosilicon, ferromanganese, ferrochrome and rare earth elements into the ladle, and pour the molten steel into the ladle , pouring; cooling, unpacking and sand shakeout, and air cooling; heat treatment: austenitizing the casting; quenching; carbon partitioning in the salt bath furnace; putting it into the holding furnace for bainite isothermal transformation, and finally taking it out and air cooling. The low-alloy wear-resistant steel composed of the above-mentioned components of the present invention and prepared through smelting and heat treatment processes has fine internal grain structure, high surfacehardness, good wear resistance and low cost, and can be widely used in bucket tooth manufacturing.
Description
technical field [0001] The invention relates to the technical field of steelmaking, in particular to a preparation method of high-strength toughness low-alloy wear-resistant steel for bucket teeth. Background technique [0002] Excavators are widely used in mining machinery, civil engineering, water conservancy projects and municipal engineering, and bucket teeth are key vulnerable parts on excavators. In recent years, with the rapid development of mining machinery and water conservancy projects, the usage of excavators has also increased. Increasing day by day, the consumption of bucket teeth increases rapidly. A large-scale water conservancy project or a medium-sized mine generally uses more than ten excavators at the same time, and the annual consumption of bucket teeth is as high as one million tons, worth more than one million yuan. The main function of the bucket teeth is to separate materials and protect the front wall of the forklift, and its working conditions are ...
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 
Login to View More