Silico & Chemico Porcelain Works

A deep understanding of the industry and requirements of the customers, coupled with sound technological expertise and experience, have led us to a leading position and a worldwide reputation as a trustworthy company supplying finest quality products.

All our products are endowed with "J India" Trade Mark. Silico & Chemico Porcelain Works is engaged as a manufacturer and exporter of the following: 

• Chemical Porcelain Wares                    
• Industrial Ceramics
• Hospital Porcelain Wares
• High Temperature Porcelain Wares
• Porous Ceramics
• Porcelain Wares
• High Alumina Ceramics
  

Crucibles, Dessicator Plates, Evaporating Basins, Buchner Funnels, Hirsch Funnels, etc., are some of the products manufactured by us in the above given categories.
We also undertake to manufacture porcelain items, of special design and shape, as provided by the laboratories and various Institutions. We shall be pleased to supply any technical information which may assist on any problem connected with laboratory porcelain   

A deep understanding of the industry and requirements of the customers, coupled with sound technological expertise and experience, have led us to a leading position and a worldwide reputation as a trustworthy company supplying finest quality products.

Thermal Shock Resistance

Average coefficient of expansion from 200 C to 2000 C is 3.56 x 10-5, gradually increasing to 4.69 x 10-5 at 1000o C. Experience has indicated suitability of particular shapes for specific uses. It remains the responsibility of the user to determine the suitability for his use. To prevent thermal stress cracks on porcelain ware, Silico strongly recommends a heating/cooling rate not to exceed 2000 C/hour. High Alumina labware temperature change rate should not exceed 1500 C/hour.

The thermal shock resistance of laboratory porcelain depends on various factors such as the correct correlation of the coefficient of expansion of porcelain body and glaze, the elasticity of glaze, etc. The most important property determining the resistance to fracture under thermal stress is the microstructure of porcelain body. This should consist mainly of Mullite crystals (3Al2O32SiO2). One of the important components of porcelain is quartz. In the final porcelain structure, however, there should be no free quartz on account of its high thermal expansion rate and phase changes which greatly weaken the porcelain body when subjected to changes of temperature. By firing at a high temperature the free quartz introduced into porcelain body is combined with the alumina present and converted into mullite. In our factory every batch of porcelain is subjected to a heat test, and the results obtained far exceed the specified limits.

The Glaze

No softening occurs up to 1000o C, and it is extremely white.

Resistance to Chemical Action

The resistance to acids and alkalies is excellent, except for hydrofluoric acid.

Follow gradual heating and cooling rates:

• Use an oven or hot plate as an intermediate step when quicker heating/cooling  rates are required..
• Gradually increase flame intensity when using a gas burner.
• Avoid contact of heated ware with a cold surface.
• Carefully inspect your labware prior to each use.
• Do not use any product that appears defective.