Low-carbon multi-component alloy steel for excavator bucket tooth, and its production technology
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An excavator bucket tooth and production process technology, which is applied in the field of low-carbon multi-element alloy steel and its production process, can solve the problems of low service life and poor fracture resistance, achieve hardness performance and impact resistance performance, and refine grain particles, improving metallurgical quality and comprehensive wear resistance
Active Publication Date: 2015-02-25
滁州恒昌机械装备制造有限公司
View PDF2 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
The most commonly used bucket tooth material in China is high manganese steel, which has the problems of low service life and poor fracture resistance
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
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] The weight percentage of each chemical component in the low-carbon multi-component alloy steel for excavator bucket teeth is: C 0.20-0.26%, Si 0.4-0.6%, Mn 0.6-1.2%, Cr 0.5-0.8%, Mo 0.4-0.6%, Cu 0.2-0.3%, Ni 0.8-1.5%, Ti 0.08-0.12%, Y 0.04-0.06%, Ce 0.02-0.04%, P≤0.02%, S≤0.02%, and the balance is iron and impurities.
[0020] The production process of low-carbon multi-component alloy steel for excavator bucket teeth includes the following steps:
[0021] (1) Melting and casting
[0022] Add the steelmaking raw materials into the medium frequency induction furnace for smelting according to the above ratio. The tapping temperature is 1640°C, and then cast in a resin sand mold at a pouring temperature of 1550°C. After pouring, keep warm for 30 minutes, and the casting is slowly cooled to room temperature for demoulding;
[0023] (2) Annealing treatment
[0024] First heat the casting to 720°C at 80°C / hour, keep it warm for 1 hour, then heat it at 120°C / hou...
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
yield strength
aaaaa
aaaaa
elongation
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses a low-carbon multi-component alloy steel for an excavator bucket tooth. The alloy steel comprises 0.20-0.26wt% of C, 0.4-0.6wt% of Si, 0.6-1.2wt% of Mn, 0.5-0.8wt% of Cr, 0.4-0.6wt% of Mo, 0.2-0.3wt% of Cu, 0.8-1.5wt% of Ni, 0.08-0.12wt% of Ti, 0.04-0.06wt% of Y, 0.02-0.04wt% of Ce, 0.02wt% or less of P, 0.02wt% or less of S, and the balance Fe and impurities. The micro-alloying treatment of trace elements comprising Mo, Cu, Ti, Ni, Y, Ce and the like increases nucleation and further refines crystal grains, so the number, the size and the form distribution of carbides are effectively controlled, included slag is deteriorated, the metallurgical quality and the comprehensive wear resistance are improved, and the comprehensive performances and the service life of the alloy steel are maximally improved. The adoption of a reasonable heat treatment technology, appropriate annealing treatment and appropriate quenching tempering substantially improves the hardness and the impact resistance of the alloy steel.
Description
technical field [0001] The invention relates to a low-carbon multi-component alloy steel for excavator bucket teeth and a production process thereof, belonging to the technical field of alloy steel manufacturing process. Background technique [0002] Excavator bucket teeth are wearing parts that are consumed in large quantities in mining operations. The working conditions are harsh, and most of the failure modes are wear and tear, and a few of them are broken. The bucket teeth are generally installed at the front end of the excavator bucket, which is a cantilever beam member, directly in contact with ore, sand, rock and other materials. When contacting the material, it not only bears the impact action, but also bears the bending moment action. During the service process, the tip of the bucket tooth is subject to large impact and sliding abrasive wear, and various furrows and deformations often appear on the surface of the tip, resulting in surface wear or shedding. The mos...
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