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30

2021-03

How to deal with bubbles after vulcanization of rubber

How to deal with bubbles after vulcanization of rubber There are always some bubbles on the surface of rubber samples after vulcanization with different sizes.After cutting, there were also a few bubbles in the middle of the sample. Analysis of the causes of bubbles on the surface of rubber products 1.Rubber mixing is not uniform,workers do not operate properly 2.Rubber film parking is not standard, the environment is not sanitary, management is not standard 3.The material is too moist (add calcium oxide when mixing) 4.Insufficient vulcanization, underripe looks bubbly 5.Insufficient vulcanization pressure 6.Vulcanizing agent more impurities, small molecules of impurities decomposed in advance, bubble residual products 7.The exhaust design of the mold itself is unreasonable 8.The product is too thick, the rubber heat transfer is slow, after the appearance of vulcanization, the rubber liquidity decreases, resulting in the lack of material, so it may produce bubbles Solution:To be improved in curing pressure and time 1.Prolong curing time or increase curing speed 2.Increase the number of exhaust during vulcanization

2021-03-30

How to deal with bubbles after vulcanization of rubber

30

2021-03

O-ring's hardness measurement method

O-ring's hardness measurement method is as follows: Measuring instrument Measurement by micro hardness tester to complete, hardness tester should conform to GB/T6032-1985 "vulcanized rubber hardness determination (30-85IRHI) micro test method" test specimen 1.The inner diameter of the standard sample is 14mm±0.17mm.The cross section diameter is 2.65mm±0.09mm, need 3 pieces  2.For O-rings with a cross section diameter of more than 6mm or an inner diameter of more than 30mm, their segments can be cut and measured, and the results cannot be compared with the standard test results 3.Test procedures Follow the test procedure of GB/T 6032 4.Test result representation:The measured results are 3. Take the middle digit and the whole digit  

2021-03-30

O-ring's hardness measurement method

30

2021-03

How to measure the size of O-ring

The following two methods are generally used to measure the size of O-ring 1.Projector measurement In short, measure the shadow of the O-ring. We usually choose projector as the measuring tool.In general, O-rings are measured to measure the size of the outside diameter and inside diameter. When do the measurement ,The diameter is measured at the top, bottom, left, and right four points of the O-ring. The following methods are applicable to both the outside and inside diameters of the O-ring 1)In the projector, according to the size of the product to adjust the multiple size of the lens, the lens will be adjusted clearly 2)Place the coordinates on one edge of the O-ring, close to the projector coordinate lines 3)Find the icon marked with a circle on the projector, click the icon, and then press the OK button 4）Move the coordinates to the second point of the o-ring and close the coordinate line to the edge of the O-ring,then press the OK button; And so on, so that after four points of the O-ring, the diameter is measured 2.Optical image measuring instrument,that is to measure the O-ring itself. The method is basically the same as the projector  

2021-03-30

How to measure the size of O-ring

12

2024-01

Custom-molded-o-rings

Custom molded O-rings are recommended when non-standard size O-rings are required but do not fit well into standard AS568, common metric sizes, or are very large.

2024-01-12

Custom-molded-o-rings

12

2024-01

3A sanitary-o-rings

Lanhe O-rings and seals provide 3-A sanitary O-rings for equipment related to dairy production and processing. The 3-A hygiene standard was developed by the U.S. food and dairy industry to set policy regarding the production and use of sanitary devices. 3-A O-rings comply with 3-A Standard 18-03 and relate to multi-purpose rubber and rubber-like materials that are approved for contact with dairy equipment surfaces and dairy equipment cleaning products. The 3-A standard is recognized and followed at the international level.

2024-01-12

3A sanitary-o-rings

07

2022-09

Common O-Ring Failures

2022-09-07

Common O-Ring Failures
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