Resin sand manual sandblasting

Resin sand Crystrip plastic particles are particles made of thermoplastic acrylic or polymerized thermosetting amines. The angular particle design provides an effective treatment method for dry-strip surface coatings. Crystrip plastic is chemically inert. Through proper use and recycling, this dry strip form can reduce the generation of hazardous waste and reduce environmental pollution. The earliest is a kind of thermosetting resin sand, which was invented by Dr. CRONING of Germany in 1944. Resin sand casting is mixing the original sand and resin to form resin sand, putting the resin sand into the mold cavity, shaping it by heating or catalyst method, and putting the molded core into the casting mold for casting.

Resin sand (plastic sand) is widely used by the military, aerospace, and other commercial companies to remove paint from large areas of metal surfaces. At the same time, plastic sand is the raw material for sandblasting technology. It is suitable for use with sandblasting machines. This technology mainly comes from developed countries such as Japan and the United States. My country is also slowly starting to use this technology, such as rubber factories, sandblasting Machinery factories, sandblasting machine factories, electronic equipment factories, automobile factories, electromechanical equipment factories, steel factories, silver factories, etc. use this technology.

Uses of resin sand:
cleaning of the workpiece surface, pretreatment of the workpiece surface before coating, changing the physical and mechanical properties of the workpiece, and finishing the surface of the workpiece. Resin sand is used for deflashing electronic products, thermosetting plastic products and rubber products, cleaning molds, sensitive components, and gold-plated parts, and can be used as a paint remover, adhesive, reinforcing agent, waterproofing agent, flame retardant, etc. Widely used in architectural decoration, transportation, advertising, agriculture, electronic appliances, foundry, and other fields.

Advantages of resin sand:

1) The dimensional accuracy of the casting is high, and the external contour is clear; the surface of the casting is smooth and clean, and the appearance quality is good; the structure is dense, and the comprehensive quality of the casting is high. Because resin sand has good fluidity, easy compaction, adjustable demoulding time, high strength after hardening, and no deformation in the subsequent handling and box closing process; Basically, there is no invisible wall displacement phenomenon, so the dimensional accuracy of the casting is high, which can be improved by 1-2 levels compared with the casting produced by clay sand and oil sand.

2) Without drying, the production cycle is shortened and energy is saved. 3) The drying process is omitted, the molding sand is easy to compact, the collapsibility is good and easy to clean, etc., which greatly reduces the labor intensity of workers and creates conditions for the realization of mechanized production.

Disadvantages of resin sand

1) High requirements on raw sand quality;

2) The molding and pouring site, there is a pungent smell during the production process.

3) Resin sand is used for production, and the cost is relatively high, which should be considered comprehensively

Technical use:
The sandblasting technology uses an ordinary pressure sandblasting machine to spray granular plastic sand on the surface of the workpiece under the air pressure of 0.1MPa to 0.3MPa to clean the surface of the workpiece quickly and without damage.

Barcol hardness: 64-72

Mohs hardness: 4.0

Specific gravity (g/cm³): 1.461-1.53

Bulk density (g/cm³): 0.93-0.96

Heat resistance temperature (℃): 100

Heat distortion temperature (°C): 205

PH value: 6--8 (neutral)

Odor: odorless

Iron content: 0.05%

Ash content: 3%

Chlorine content: trace

Application fields:
The industrial application of plastic sandblasting includes paint film removal, coating removal, surface cleaning and conditioning. It has been proved by industrial application that it is a faster and more environmentally friendly method than chemical removal, and it will cause less damage to the substrate. This technology can also be used for deflashing and deburring electronic products, thermosetting plastic products and rubber products, cleaning molds, sensitive components, and gold-plated parts, and can be used as a paint remover, adhesive, reinforcing agent, waterproofing agent, flame retardant Agents, etc., widely used in various fields