A kind of bimetal composite strike plate for fan type coal mill and its processing technology
A processing technology and a technology of striking plates, which are applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of inability to meet the assembly and use requirements of fan coal mills, no wear resistance, and complex structure, so as to improve the operation rate of equipment, improve Abrasion strength and impact resistance, the effect of reducing downtime
Active Publication Date: 2022-03-01
JIANGSU GUOTAI MACHNERY MFG CO LTD
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Problems solved by technology
[0003] The current fan-type coal pulverizer works as an impact type, so the requirements for its composition and structure such as the impact plate are relatively high. It not only needs to be able to be disassembled quickly, but also has the characteristics of wear resistance, impact resistance, and high temperature resistance. The existing The strike plate used for the fan coal mill has a complex structure and has no wear resistance, impact resistance, high temperature resistance, etc., which can no longer meet the assembly and use requirements of the existing fan coal mill, and this is an urgent problem to be solved at present
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[0030] 1. Drawing design: Redesign according to the dimensions of the strike plate used on site, formulate a new manufacturing process, disassemble the parts diagram, and indicate the key points of manufacturing dimensions.
[0031] 2. Mold design: The lining board mold is produced with wooden molds, equipped with a special bottom plate for the model. The mold is divided into upper and lower molded boxes, and the vertical runners of two kinds of molten steel are made on the upper and lower molded boxes. A mud core is added to the bottom of the striking plate, and horizontal runners and inner runners are made on both sides of the mud core. Leave the location of the riser on the bottom plate, and position the partition on the mold of the striking plate body according to the drawing. Except for some dimensions specified in the drawing, the shrinkage rate of the casting is calculated at 2.6%. The mold is qualified according to the drawing. , brush the paint and wait for it to dry ...
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A bimetallic composite striking plate for a fan-type coal mill, the bimetallic composite striking plate includes an inner striking plate and an outer striking plate, both of which are made of 35# steel and high chromium alloy It is made by pouring; the inner striking plate and the outer striking plate are respectively provided with an inner striking plate partition and an outer striking plate separating plate; the processing technology includes the following steps: 1) product drawing design; 2) mold design; 3) Partition production; 4) modeling; 5) pouring; 6) product out of the box; 7) workpiece grinding; 8) product inspection; 9) product heat treatment. The invention uses two different metals for smelting and one-time compound casting; improves the wear resistance and impact resistance of the striking plate, prolongs the service life; at the same time reduces the maintenance cost of the fan mill; reduces the downtime, improves the operating rate of the equipment; reduces wear and tear The loss caused by the reduction of equipment production capacity and the increase of power consumption; reduce the cost of environmental pollution caused by wear, damage and blanking, and increase the cost of material cleaning and maintenance.
Description
technical field [0001] The invention belongs to the application field of mechanical accessories of power plants, and in particular relates to a processing technology of a fan mill bimetal composite striking plate. Background technique [0002] In the power generation of power plants, the machine is generally considered according to the selected coal type. Compared with other coal pulverizers, the fan coal pulverizer is more suitable for grinding high-moisture lignite and some soft bituminous coal. During the working process of the fan coal mill, the fineness of pulverized coal grinding is also related to the quality of power plant combustion. After the fan-type coal mill completes the grinding work, the pulverized coal will be blown into the boiler by hot air, and then the hot flue gas formed after the pulverized coal is fully burned in the boiler will flow along the boiler to release heat, and then the coal ash will be separated , and the grinding efficiency and fineness o...
Claims
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IPC IPC(8): B02C23/00B22D19/16B22D31/00C21D9/00
CPCB02C23/00B22D19/16B22D31/00C21D9/00
Inventor 陈伟
Owner JIANGSU GUOTAI MACHNERY MFG CO LTD