Preparation method of composite reinforced steel shots

A technology for strengthening steel and preparation steps, applied in the field of preparation of composite strengthened steel shot, can solve the problems of reduced impact resistance and friction resistance of steel shot, influence of service life of steel shot, large shape deviation, etc., and achieves good sphericity , Improve service life and reduce mechanical damage

Inactive Publication Date: 2017-11-28
常州兆威不锈钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: Aiming at the problems that the traditional strengthened steel shot has large deviation in shape and is prone to surface cracks, resulting in reduced impact resistance and friction resistance of the steel shot, and affecting the service life of the steel shot, a composite strengthened steel shot is provided. Preparation method of steel shot

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022]First weigh 600g of coconut shell fiber and 120g of sodium hydroxide, pour it into a pressure cooker filled with 3L of clear water, heat and cook for 30min at a temperature of 140°C, wait for natural cooling to room temperature, collect the cooked coconut shell fiber, and Pour it into a fermenter containing 800mL of biogas slurry, stir and mix it with a glass rod for 20 minutes, seal the fermenter, and ferment for 48 hours at a temperature of 32°C; when the sealed fermentation is completed, filter the material in the fermenter to obtain filter cake, and wash the filter cake with deionized water for 5 times, then spray the washed filter cake with liquid nitrogen for 45 seconds, and quickly transfer the frozen filter cake to a frozen pulverizer, pulverize for 30 minutes, and discharge to obtain pulverization wet material, and transfer the obtained pulverized wet material into an oven, and dry it to a constant weight at a temperature of 110°C to obtain a pulverized dry mater...

example 2

[0024] First weigh 400g of coconut shell fiber, pour it into a pressure cooker filled with 2L of water, heat and cook for 20min at a temperature of 130°C, wait for natural cooling to room temperature, collect the cooked coconut shell fiber, and pour it into a 600mL container In the biogas slurry fermenter, stir and mix with a glass rod for 15 minutes, seal the fermenter, and ferment for 36 hours at a temperature of 30°C; Wash the filter cake with deionized water for 3 times, then spray and freeze the washed filter cake with liquid nitrogen for 30 minutes, and quickly transfer the frozen filter cake to a frozen pulverizer, pulverize it for 20 minutes, and discharge it to obtain a pulverized wet material. The obtained pulverized wet material was transferred to an oven, and dried to a constant weight at a temperature of 105°C to obtain a pulverized dry material; 100 g of the obtained pulverized dry material was weighed and poured into a beaker containing 400 mL of a dopamine solut...

example 3

[0026] First weigh 500g of coconut shell fiber, pour it into a pressure cooker filled with 3L of water, heat and cook for 25min at a temperature of 135°C, wait for natural cooling to room temperature, collect the cooked coconut shell fiber, and pour it into a 700mL container In the biogas slurry fermenter, stir and mix with a glass rod for 17 minutes, seal the fermenter, and ferment for 45 hours at a temperature of 31°C; Wash the filter cake 4 times with deionized water, then spray and freeze the washed filter cake with liquid nitrogen for 40 seconds, and quickly transfer the frozen filter cake to a frozen pulverizer, pulverize it for 25 minutes, and discharge it to obtain pulverized wet material, and The obtained pulverized wet material was transferred to an oven, and dried to a constant weight at a temperature of 107° C. to obtain a pulverized dry material; 120 g of the obtained pulverized dry material was weighed and poured into a beaker containing 450 mL of a dopamine solut...

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Abstract

The invention relates to a method for preparing composite reinforced steel shots, which belongs to the technical field of metal product preparation. In the present invention, the coconut shell fiber is boiled and then fermented to increase the fiber porosity, crushed and refined after being frozen in liquid nitrogen, and then modified by soaking in dopamine solution to improve the adsorption performance of the fiber. After drying, react at high temperature under the protection of argon to form a carbonized mixture containing silicon carbide and carbon, and then use the carbonized mixture with a porous structure to absorb and fill the ferrous hydroxide produced by the precipitation. After filtering and drying , and reduced in a hydrogen atmosphere to obtain a composite reinforced steel shot. The invention makes full use of the silicon carbide and carbonaceous components formed at high temperature as reinforcements, improves the impact resistance and wear resistance of the steel shot, prevents the surface of the steel shot from cracking, and the obtained steel shot has a narrow particle size distribution and a spherical or similar shape. The spherical shape effectively solves the problem of short service life of traditional reinforced steel shot.

Description

technical field [0001] The invention relates to a method for preparing composite reinforced steel shots, which belongs to the technical field of metal product preparation. Background technique [0002] With the development of the steel structure industry, people's requirements for anti-corrosion performance are increasing. After a certain period of use of steel materials such as ships and metal structures, there will generally be scale, grease, rust and other impurities on the surface. According to PSPC coating Standard, must be thoroughly removed before painting. The implementation of shot blasting can maximize the cleaning of the surface of the steel plate, and is currently the most used pretreatment process. The selection of abrasives in the shot blasting process will directly affect the cleaning effect. In principle, it is the best way to use abrasives of the same material as the base material. Therefore, the main abrasives used in the pretreatment of steel plates are c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14D21C3/02D21C5/00D21C9/00
CPCC09K3/1436D21C3/02D21C5/005D21C9/007
Inventor 尚秋彤薛洋许丽君
Owner 常州兆威不锈钢有限公司
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