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china latest news about Reasons and solutions for bursting of PC plastic parts after fuel injection

Reasons and solutions for bursting of PC plastic parts after fuel injection

November 20, 2023

Plastic parts made of PC materials are easy to crack after spraying (oil spraying). The common reasons and solutions are as follows: Reason: 1. The applied force within the product is not eliminated. 2. There is a problem with the thinner used in fuel injection. 3. The processing temperature is too ...
china latest news about What is the purpose of heat treatment of brass? Will it harden?

What is the purpose of heat treatment of brass? Will it harden?

November 17, 2023

What is the purpose of heat treating brass? 1. The purpose of quenching is to make brass obtain high hardness and wear resistance. The hardness of brass through quenching can generally reach HRC60~65. However, internal stress is generated inside the brass after quenching, making the brass brittle, ...
china latest news about The difference between 316L and 316SS stainless steel

The difference between 316L and 316SS stainless steel

November 16, 2023

1. Different carbon content What the SS and L marks represent is that there is a difference in the carbon content of steel. SS has a high carbon content, and L represents ultra-low carbon. Taking 316L and 316SS as examples, the carbon content of 316SS is less than or equal to 0.08, and the carbon ...
china latest news about Why does stainless steel rust? Causes and preventive solutions

Why does stainless steel rust? Causes and preventive solutions

November 15, 2023

Stainless steel has the ability to resist atmospheric oxidation, it will not rust, and it also has the ability to corrode in media containing acid, alkali, and salt--that is, corrosion resistance. However, its corrosion resistance changes with the chemical composition of the steel itself, its ...
china latest news about Shape and position tolerances questions and answers

Shape and position tolerances questions and answers

November 14, 2023

41．What areas of special attention need to be paid attention to when adopting the maximum entity requirement? A: the deviation of the datum element is considered based on its external acting size rather than the deviation of the actual size from the control boundary. If the measured element is a ...
china latest news about Shape and position tolerances questions and answers

Shape and position tolerances questions and answers

November 13, 2023

31. What is the definition of symmetry tolerance zone? A: the tolerance zone is the area between two parallel planes (or straight lines) whose distance is the tolerance value t and which are symmetrically arranged relative to the datum center plane (or center line or axis). If two directions that ...
china latest news about Shape and position tolerances questions and answers

Shape and position tolerances questions and answers

November 8, 2023

1. What are the main contents of the national standards for shape and position tolerances? A: There is GB/T1182-96 General principles, definitions, symbols and graphic representations of shape and position tolerances. GB/T4249-96 Tolerance principles. GB/T13319-03 Geometric Tolerances Positional ...
china latest news about Shape and position tolerances questions and answers

Shape and position tolerances questions and answers

November 9, 2023

11． What are datum features? A: an actual feature (such as an edge, a surface, or a hole) on a part that is used to establish a datum and actually serves as a datum. 12. How are the measured elements represented on the drawing? A: the measured elements are generally connected to the geometric ...
china latest news about Shape and position tolerances questions and answers

Shape and position tolerances questions and answers

November 10, 2023

21. What is the definition of flatness tolerance zone? A: the tolerance zone is the area between two parallel planes whose distance is the tolerance value t. 22. What is the definition of roundness tolerance zone? A: the tolerance zone is the area between two concentric circles on the same normal ...
china latest news about PC, ABS, HIPS, PP, PS, PVC, POM, EVA, PA6, PA66, PMMA, HDPE, LDPE, GPPS shrinkage

PC, ABS, HIPS, PP, PS, PVC, POM, EVA, PA6, PA66, PMMA, HDPE, LDPE, GPPS shrinkage

November 7, 2023

What is shrinkage? Shrinkage is also called shrinkage. The shrinkage of plastic materials refers to the percentage difference between the size of the plastic material product at the molding temperature and the size after it is removed from the mold and cooled to room temperature. It reflects the ...
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