1. Warpage deformation: deformation of
plastic products caused by internal stress difference or poor cooling during injection molding.
2. Gate markings: There are discernible rings around the gate. If the center gate is used, it is the center circle, and if the side gate is used, it is the concentric circle.
3. There is a smashing area in the sharp edge material flow area: the surface of the product is very good, until the sharp edge, the sharp surface appears on the surface and the surface is rough.
4. Voids: The voids inside the article appear as round or elongated bubbles, which often occur in relatively thick articles, especially in the thickest areas.
5. 邃 bubble: bubbles generated inside the plastic cause the surface of the product to produce a convex shape
6. Black spots or black lines: due to raw materials mixed with foreign bodies. After the injection molded parts are formed, spots appear on the surface of the product, or stay at high temperatures for a long time to cause decomposition, and black streaks or black spots appear.
7. Spray pattern: When the melt enters the cavity, there is a serpentine-like pattern at the front end of the fluid. It often occurs in the mold of the large chess cavity, and there is no direct contact with the mold or no obstacles when the melt is filled.
8. Recording pattern: A deep groove can be seen in the direction of the entire flow and even at the end of the flow path.
9. Weld line: A kind of linear trace on the surface of plastic parts is injected or extruded. If the strands meet in the mold, the melts are not completely fused at the interface, and they cannot be welded together to form a fusion. Imprinting, affecting the appearance quality and mechanical properties of plastic parts
10. Dark spots, black lines, embrittlement, burn marks, and discoloration.
a. Black spots and black lines are dark spots or dark stripes on the surface of plastic parts, and brown spots or brown lines refer to the same type of flaws.
b. Embrittlement is the cracking of the material, which shortens the molecular chain and lowers the molecular weight, resulting in a decrease in the physical properties of the plastic part.
c. Burn marks are dark or black dots that are close to the end of the flow path or the wind zone.
d. Fading refers to the change of plastic parts from the original plastic color.
11. Flashing edge: The thin part of the parting line is the excess of the plastic overflow mold clamping surface and the insert in the injection molding process, and remains on the plastic product after cooling.
12. Dent: The dent is generally caused by a local increase in the shrinkage of the product due to an increase in the wall thickness of the plastic article. It is the local internal contraction caused by the gate sealing or the shortage of injection.
13. Lack of material (underfill): a gap formed on the surface of the part due to insufficient pressure or trapped air during filling.
14. Top white: the surface of the surface is whitish, which is the external part of the injection molded part. The whitening and deformation caused by the singulation of a part of the molecular structure caused by the rearrangement of the mold, usually occurring at the other end of the ram.
15. Chromatic aberration: refers to the actual product color and the sample sample color or swatch contrast exceeds the allowable value
16. Cold spot: refers to the fog or bright color of the near gate of the workpiece or the curved scar from the gate as if it were attached to the gate.
17. Cracking and whitening: The relatively obvious micro-cracks on the surface of the plastic part are called cracks. The frost-like cracks similar to the cracks are called whitening, and the cracks and whitening are fine cracks without cracks. Environmental stress cracking occurs when a plastic part is exposed to a chemical environment or under stress.
18. Silver wire: the needle-like silver white color of the surface of the plastic part in the direction of the flow.
19. White line: The whitened stripe-shaped deformation zone of the polymer due to stress concentration under the tensile stress. These stripe plane areas strongly reflect visible light, forming a silver-white luster on the surface of the material, commonly known as white line.
Aluminum Oxide Flap Disc
Aluminum oxide flap discs are made by Aluminum oxide coated cloth, one kind of the flap discs or power flex discs. ALO flap discs have the advantages of grinding discs and fiber discs, making it easier for grinding and polishing disposable, reducing the work process and lower the grinding cost.
Abrasive grains for ALO Flap Disc is Aluminum oxide. ALO flap discs are widely used in grinding, polishing and deburrnig of metals and non-metals; metals includes general metals, carbon steel, alloy steel, casting iron, etc.
Flap discs have the features of quick speed, high efficiency, synchronous consumption, strong grinding force, fast heat disspation and good performance.
BRIEF INTRODUCTION
Henan Yuteng Grinding Material Co., Ltd. is located in Kaifeng City, Henan Province. Is a set of production, research and development, service as one of the grinding agent, grinding, polishing products professional company, specializing in the production and sales of coated grinding tools derived ancillary products: flocking sand disc, blade, all kinds of special-shaped grinding disc, sponge grinding block, steel paper disk, ring sand belt, sand ring and automotive polishing products.
Our main products are Velcro Disc,Abrasive Paper,Fiber Disc,Flap Disc,Abrasive Cloth,Abrasive Belt.
Relying on the advantages of the industrial base, the company has advanced production equipment and strong technical force, complete testing equipment to ensure that the products are sharp, wear-resistant and high strength, and the product quality reaches the advanced level of similar international products.
Our products can be used for all kinds of metal watches and stainless steel, alloy steel, non-alloy steel, non-ferrous metals, titanium alloy and other grinding and wire drawing, polishing and so on; Wood, high-medium fiberboard, flower board, composite board, glass, rubber and other table grinding and polishing. Widely used in automobile, steel, building materials, shipping, aviation, wood, plastic, leather and other industries.
We provide customers with the best surface treatment program, according to the actual needs of customers "tailored" a variety of specifications of sand pan, sand belt, sand carbon and emery cloth ring polishing products.
The company's flexible operating mechanism and all customer-centric concept, we in addition to provide you standardized, serialized products, but also according to your special requirements, for you to manufacture high-quality, personalized non-standard coated with abrasive products.
Aluminum Oxide Flap Disc,Aluminium Oxide Flap Disc,Flap Wheel For Aluminum,Best Flap Disc For Aluminum
Henan Yuteng Abrasives Co.,Ltd , https://www.henanyutengabrasives.com
![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)