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30

2021-03

Silicone Rubber Production Process

Silicone Rubber Production Process 1.incomming quality inspection 2.Weighing 3.Rubber Mixing 4.Sulfur Test 5.Trimming 6.Cutting 7.Mold Prepared 8.Add Sulfur 9.First Article Inspection 10.InPut Process Quality Control 11.Deburring 12.Examine 13.Appearance Inspection 14.2nd Add Sulfur 15.Final Inspection 16.Packaging 17.Outgoing Quality Control 18.Shipment Inconsistent filesystem structure：

2021-03-30

Silicone Rubber Production Process

30

2021-03

Advantages of Nitrogen Freezing to Remove Burrs

Advantages of nitrogen freezing to remove burrs 1. The operation is simple, ordinary workers can operate the machine skillfully after a period of training, and the advanced automatic control system can prevent workers from misoperation 2.High production efficiency, a frozen deburring machine average daily processing amount equivalent to 50-80 skilled workers trim the work load 3.High trimming precision, it can remove very small and hidden flash, without limited by product shape, high pass rate and stable trimming quality 4.Do not damage the surface of products, improve the appearance of products quality, increase the service life of products 5.Small area, a frozen trimming machine and auxiliary equipment only 10 square meters 6.Reduce the use cost of the mold and the cost of the glue material. The equipment does not need the edge tearing, only the flying edge is required to be as thin as 0.2mm, the overflow groove is as small as possible, and the flying edge allowance is only 1/5-1/10 of the ripping mold.

2021-03-30

Advantages of Nitrogen Freezing to Remove Burrs

30

2021-03

What are the commonly used testing items for rubber testing?

What are the commonly used testing items for rubber testing? 1.Rubber performance test Generally do rubber performance test, can be in accordance with ISO, ASTM, DIN, GB, HB and other standards, to rubber raw rubber, vulcanized rubber, rubber products and rubber auxiliaries of the physical and chemical properties, mechanical properties and other tests. 2.Performance indicator test project Physical and mechanical properties：Density, hardness, surface resistivity, dielectric property, tensile property, impact property, tear property, compression property, adhesive strength, wear resistance, low temperature performance, resilience Aging Performance:Heat aging, ozone aging, ultraviolet lamp aging, salt fog aging, xenon lamp aging, carbon arc lamp aging, halogen lamp aging Liquid resistance:Lubricating oil, gasoline, oil, acid, alkali, organic solvent, water resistance Flammability :Vertical combustion, alcohol burner combustion, roadway propane combustion, smoke density, combustion rate, effective combustion calorific value, total smoke release Functional Suitability : Hydraulic resistance, pulse test, electrical conductivity, water tightness, air tightness

2021-03-30

What are the commonly used testing items for rubber testing?

30

2021-03

Why the rubber sealing strip products will appear bubbles？

Why the rubber sealing strip products ?will appear bubbles？ Automobile sealing strip is one of the important parts of the car, widely used in the door, window, body, seat.Car sealing strip, chair, skylight, engine case and trunk and other parts, with waterproof, sealing, sound insulation,dustproof, frost proof, shock absorption, heat preservation and energy saving important role, car sealing strip can improve air tightness, prevent wind and rain into the compartment； Once the aging of the car seal strip is damaged, it will cause the car leakage, and the wind noise of the car will increase, and the rain leakage will easily make the body rust.Then the car door seal and other rubber seal products in the production process of some problems may lead to the door seal and other rubber seal surface bubble phenomenon, what is the specific reason? Analysis of causes: 1.The auxiliaries in the compound are not evenly dispersed during mixing 2.Vulcanizing agent impurities more, small molecule impurities into early decomposition, bubble residual products 3.Mixing temperature is low, there is moisture, moisture volatilization is not net, when the temperature is high, the rubber is easy to melt when the sulfur is added to the opening mixer, or the sulfur is burnt 4.The glue material is not placed enough time or not placed on the production and use 5.Rubber heating is not uniform so the surface is rough 6.When the rubber material is hot smelted on the opening mill, the surface is wrapped with air, and the type of rubber material has the phenomenon of hiding air 7.Temperature control is not strict and there are air bubbles on the surface of semi-finished parts How to resolve ? 1.Optimize the production formula, choose easy dispersing type of additives to replace the existing additives, increase the application of dispersant, homogenizing agent and other processing additives, improve the dispersion performance of various additives 2.Mixing rubber using internal mixer two-stage process production, a period of mixing temperature increase, so that the moisture in the raw material is fully volatilize, glue after placing and then two-stage mixing, temperature control in the temperature range of sulfur and accelerator, avoid burning time short or burning 3.Strictly control the placement time of semi-finished products, so that all kinds of additives fully diffuse, improve the uniformity of the rubber material, and is conducive to the recovery of stress and strain under mechanical action 4.The glue hot smelting should be uniform, and the operation mode of separating the glue supply from the type in the hot smelting is adopted to improve the smoothness of the surface of the glue 5.Adopt the extrusion process to extrude the rubber materialand the surface of the type of adhesive material is no longer trapped air phenomenon.

2021-03-30

Why the rubber sealing strip products will appear bubbles？

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

How to choose different types of oil seals?

How to choose different types of oil seals? The choice of oil seal should be based on the use of medium and working environment， the sealing medium determines the material of the oil seal,the working environment mainly considers the operating pressure and the working line speed and the working temperature range.Therefore,

2021-03-30

How to choose different types of oil seals?
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