Method for processing wear resistance steel medium alloy lining board
A processing method and technology of wear-resistant steel, applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve the problems of difficult to popularize and use on a large scale, low impact toughness, uneconomical and other problems
Inactive Publication Date: 2011-01-26
顾开明
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, as high-chromium cast iron with high initial hardness, due to its low impact toughness and easy fracture, it is neither economical nor reliable.
In addition, alloy steel linings are used, especially thicker alloy steel linings, which can meet the requirements of high hardness, high toughness and high wear resistance, but some precious iron alloys are added in the manufacturing process of alloy steel linings , such as adding more than 0.6% ferromolybdenum, etc., resulting in high cost of the lining plate, high sales price, and it is not easy to promote and use on a large scale
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 moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0004] A method for processing alloy liners in wear-resistant steel, characterized in that: each component is selected according to the required content of alloy liners in wear-resistant steel, and the weight percentages are: C: 0.3-0.45%, Cr: 1.5 -2.2%, MO: trace, Ni: trace, W: trace, Mn: 0.6-1.0%, Si: 0.35-0.70%, P≤0.035%, S≤0.03%, Re trace, and then cast the liner; The medium alloy liner is placed in a heat treatment furnace for annealing treatment. The temperature is raised from zero to 300°C for 2 hours, 300°C to 600°C for 2 hours, 600°C to 950°C for 3 hours; 15mm, the holding time will be increased by 1 hour; quenching treatment, after the tempering temperature is 950 ° C for 3 hours, quenching treatment in oil for 3-6 hours; the quenched liner is tempered at 240 ° C -250 ° C, The processing time is 10-20 hours; shot blasting treatment; shaping; mechanical performance test, and products that meet the requirements of Q / 321282HSJ 02-2007 "Wear-resistant Steel Lining Plate"...
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 provides a method for processing a wear resistance steel medium alloy lining board. The method comprises the following steps: selecting each composition according to content required by the wear resistance medium alloy lining board, and casting the lining board; annealing the lining board with temperature controlled at 300 DEG C for 2 hours; heating the lining board to 600 DEG C for2 hours; heating the lining board to 950 DEG C and maintaining the temperature for 3 hours; increasing one more hour when the thickness of the lining board increases by 15mm; quenching the lining board in oil for 3 to 6 hours after tempering temperature of 950 DEG C is kept for 3 hours; tempering the quenched lining board at a temperature of between 240 DEG C and 250 DEG C for 10 to 20 hours; carrying out ball blast treatment; shaping; and carrying out mechanical performance test, storing if the lining board is in accordance to standard. The method leads lining boards, in particular thick lining boards, not only to have high hardness and even section hardness, but also good toughness and good corrosion resistance, improves the service life of the lining board, reduces cost, and has higherpractical value.
Description
Technical field: [0001] The invention relates to a steel ball coal mill, in particular to a processing method for a wear-resistant steel mid-alloy liner used in the steel ball coal mill. Background technique: [0002] Steel ball coal mills are widely used in cement, mining, electric power and other industries. Due to the impact and grinding effect of the ball mill medium and materials, the working condition of the steel ball coal mill liner is relatively bad, so the steel ball coal mill liner should have excellent comprehensive physical properties such as high toughness and high wear resistance. Especially for the steel ball coal mill liner above Ф3, the requirements for comprehensive physical properties such as high toughness and high wear resistance are more prominent. At present, the steel ball mill liner used in our country is generally made of high chromium cast iron KmTBCr 26 , KmTBCr 20 MoCu 1 etc., its hardness is above HRC55, impact toughness α K ≤8J / cm 2 . S...
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
Login to View More IPC IPC(8): C21D9/00C21D1/26C21D1/18C21D7/06
Inventor 顾开明
Owner 顾开明