PAI detection ball manufacturing process
A production process and a technology for detecting balls, which are applied in the direction of manufacturing tools, metal processing equipment, polishing compositions containing abrasives, etc., can solve the problems of inability to use precision instruments, low service life of detection balls, and unstable ball size, etc. Achieve the effect of shortening production time, good work efficiency and good dimensional stability
Inactive Publication Date: 2013-03-20
朱炳良
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Problems solved by technology
It is generally made into ball blanks by mold injection molding, and then placed in a high-temperature oven, raised from 140°C to 280°C, to cure the ball blanks for 21 days, and then remove the burrs in the hexagonal drum with abrasive materials for 24 hours, and then It is made by using a hexagonal drum and the youngest polishing sand for 48 hours. The precision of the detection ball made by this process is about 0.03mm, which is relatively low. Such a detection ball has a low service life and cannot be used for precision. Instruments, such as aerospace, aircraft, medical and other instruments; in addition, the existing detection equipment generally uses ceramics, stainless steel and other materials, ceramics are easy to break, and stainless steel balls are easily broken at high temperatures due to thermal expansion and contraction. Expansion, easy shrinkage at low temperature, unstable sphere size, affecting test results, therefore, there are certain deficiencies, and it is necessary to improve it
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Embodiment Construction
[0024] The present invention is described further below:
[0025] PAI, or Polyamideimide, is a new class of engineering plastics containing amide groups. Due to the very stable aromatic heterocyclic structure in the polyimide molecule, it exhibits heat resistance and low temperature resistance unmatched by other polymer materials, and has excellent dimensional stability in high temperature environments, such as: It has the best dimensional stability in the temperature range of 250°C; PAI also has good machinability, especially the yellow-brown PAI, which is the best kind of toughness and impact strength among PAI; in addition, PAI also has good Electrical insulation, excellent wear resistance and friction properties, outstanding wire resistance and superior high-energy radiation resistance, etc., its inherent low flammability, high strength, high insulation, radiation resistance, self-lubricating, small thermal expansion coefficient, so , It is often used in the production of...
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The present invention relates to the technical field of ball detection, and discloses a PAI detection ball manufacturing process, which comprises the following process steps: 1) carrying out injection molding of a ball blank, 2) carrying out a curing treatment, 3) carrying out detection regulation, and 4) carrying out a polishing treatment, wherein a curing temperature on the first day is controlled to 149 DEG C, a curing temperature on the second and third day is controlled to 218 DEG C, a curing temperature on the 4th-10th day is controlled to 260 DEG C, a curing temperature on the 11th-12th day is controlled to 243 DEG C, a curing temperature on the 13th day is controlled to 191 DEG C, and a curing temperature on the 14th day is controlled to 150 DEG C. According to the present invention, a manufacturing time is substantially shortened, detection ball precision is improved, long-term and continuous work at a high temperature of 250 DEG C can be achieved, and good work efficiency, good hardness, good stability, high mechanical strength, high rigidity, high hardness, corrosion resistance, plasma resistance and abrasion resistance can be maintained within a wide temperature range.
Description
technical field [0001] The invention relates to the technical field of ball detection, in particular to a manufacturing process of a PAI detection ball. Background technique [0002] The test ball is used as a test and comparison standard for other balls. It is generally made into ball blanks by mold injection molding, and then placed in a high-temperature oven, raised from 140°C to 280°C, to cure the ball blanks for 21 days, and then remove the burrs in the hexagonal drum with abrasive materials for 24 hours, and then It is made by using a hexagonal drum and the youngest polishing sand for 48 hours. The precision of the detection ball made by this process is about 0.03mm, which is relatively low. Such a detection ball has a low service life and cannot be used for precision. Instruments, such as aerospace, aircraft, medical and other instruments; in addition, the existing detection equipment generally uses ceramics, stainless steel and other materials, ceramics are easy to ...
Claims
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IPC IPC(8): B29C71/02B24B37/025C09G1/02
Inventor 朱洛霆
Owner 朱炳良