The Vishnu Pyroceramics Roorkee, Uttarakhand

We offer sticks are very dense and therefore they last as much as twenty times the ordinary chalk sticks and thus these are economical even though the price per stick is reduced by one third rather than increasing. A trial would remove your doubts, if any. These chalks are available in white and five assorted colors.

We are offering uchit low dust chalks. Our uchit dustless chalks are plaster of paris based, which are lighter, whiter, and suitable for cemented boards, wooden boards even in big classrooms. Due to its lightweight nature, it is called low dust chalks, which are slightly tapered in shape. The free test samples can be sent on demand. specifications :- dustless : yes (low dust)clour : whitesize : 910* 80 mm (tapered slightly)packaging : 100 and 50 piecesbrand name : uchit

• TypePyrometric
• MaterialMetal
• ColorAvailable in many colors
• SurfacePolished
• FeatureRust Proof
• Thickness1-2 mm

We are offering soigne dustless chalks-white. Our soigne dustless chalks (white) are made, using premium quality material that assures their reliability and durability. Seeking their huge popularity among clients, we provide our soigne dustless chalks (white) in different packaging.

The Vishnu Pyroceramics is the prominent manufacturer and supplier of Dustless Chalks from 1968. These Dustless Chalks are smooth on surface which is one of the demand-raising features of them.   Offered range of chalks is hugely appreciated for its smooth writing and less breakage thus widely demanded in the market. Provided chalk finds immense applications in varied sectors such as schools, colleges and related sectors. It is obtainable in the market in various colors at industry leading price. These chalks are light in weight and offered to patrons in perfect thickness. Made of non toxic chemical powders these chalks are best in quality and crack proof. Offered Chalks as their name implies do not form dust and are available in many colors as per clients requirements.   Special Features : Non- Dusting / Dustless Long Lasting Non Toxic Non Soiling Non Polluting   Soigne Dustless Chalks are Available in 3 Quality (White and Coloured) Soigne Dustless Chalk Premium Soigne Dustless Chalk Medium Soigne Dustless Chalk Regular Packing Available in 3 Sizes : Pack of 10 Chalk Sticks Pack of 50 chalk sticks Pack of 100 chalk sticks

We are offering pyrometric cones. The vishnu pyrometric is the only manufacturer and supplier of pyrometric cones in the country since 1968 to serve your pyrometric needs in the best possible manner. Our pyrometric cones which are elegant, efficient, reliable, and economical in every aspect. Vishnu cone are accurate guide to mark the endpoint in firing and heat distribution of your klin. prior to the indigenous manufacture of pyrometric cones in india, the ceramic industry used cones from u.k. And america. To meet and to suit the requirements of ceramic industry in the country, in 1968 “ standard vishnu pyrometric cones ” have been introduced by ms vishnu pyrocermics, conforming to imported cones. Our sincere efforts to produce thoroughly reliable pyrometric cones have been highly successful and the demand has been so great that special arrangements for quality and quantity production have been established. Characteristics : machine madedimensionally accuratefree from warpingmade from purest raw materialsuniform rate of rise of temperature 150°c per hourcarefully mounted in a suitable plaque general description : pyrometric cones are used to determine the combined effect of temperature and time, usually called heat work in the firing of ceramic wares. The physical and chemical changes in the cones resulting in deformation are similar to those taking place in the ware being fired. This phenomenon is an important factor contributing to the usefulness of pyrometric cones for the following purposes : to indicate the progress of firing, as the products approach maturity through the use of series of cones mounted to a suitable plaque and observed during firingto determine by observation of the cones, the end point of firing i.e. When full maturity of the product is reachedto determine the degree of uniformity or firing treatment in various parts of the ware setting through the use of a number of suitably located plaques of conesto provide evidence of adverse atmospheric conditions during firing, as indicated by the color and or temperature of the cone surfaces after firingin addition, small specially processed cones are used to classify the refractoriness i.e. Pyrometric cones equivalent (p.c.e.) value of ceramic materials or products. The usefulness of pyrometers is limited, in that they do not provide adequate information or evidence of the combined effect of time and temperature such as is obtained from cone readings. The temperature data obtained from pyrometers is used either to note advances in kiln temperatures at the thermocouple location or to note whether a definite temperature is being maintained at a given point. Preparation : standard vishnu pyrometric cones are machine made, and are dimensionally accurate and free from warping. These cones are made from carefully standardized mixtures of purest raw materialsthe standard uniform rate of rise of 150° c per hour (especially in the last one to two hours) is maintained to standardize and check all new batches of cone powder mixtures and finished products. The cones of new batches of cone powder must match the standard test cone perfectly before the powder is released for cone production. The use of cones : cones should be carefully mounted in a suitable plaque. The following points should be kept in view :the material of the plaque should be more refractory than the cones for which it is to be usedthe total shrinkage of the plaque should not be excessive; otherwise, the plaque may crack around the cones or even cause the cones to break off at the base. If the plaque shrinks much less than the cones, the latter may become loose and tilt over, giving false indication of bendingfor mounting the cones in the plaque, the use of template or jig is recommended to facilitate setting the cones at the correct height and angle of 82° with the horizontal plane of the plaque and to a depth of 3 to 4 mmcone plaque setting should be standardized so that results as shown in various plaques may be comparable. These may be mounted so that they will 1). Deform at right angles to the axis of the plaque 2). Deform along the axis of the plaque 3). Deform at an angle (viz. 45°) to the axis of the plaque. If the cones are so set that one may face an another, the higher cone number should fall on the lower number cone. the end point of the cone is indicated when the tip of the cone bends and touches the plaquefor those who are already using cones other than vishnu cones the changeover to vishnu cones is quite a simple matter, all that is necessary is to fire beside a set of the cones at present in use a set of vishnu cones made up of such numbers as the manufacturers will be pleased to advisea careful observation of the cones during their squatting period (noting the satisfactory sequence of the vishnu series cones together with an examination of the two sets of cones after they are drawn will indicate at once which cones of vishnu series should be used in substitution that particular position in the oven or klin in general way the following list shows the cones usually employed in the regular types of kilns and p.c.e. Tests : glass colours022 to 016enamel kiln (soft fluxes)019 to 015enamel kiln (ordinary)014 to 011enamel kiln ( hard)012 to 07red brick klin010 to 01tile and majolica kiln07 to 01glost oven (soft glazes)05 to 1glost oven (earthen ware and china)03 to 5earthenware biscuit oven3 to 8vitrious tile and granite biscuit oven4 to 9china biscuit and sanitary oven7 to 12hard porcelain13 to 17special refractory bricks etc. 17 & abovetesting of materials12 to 42 (p.c.e cones)samples can be sent on demand. Terms for deliverypayment : documents will be sent through your bankers for payment. (please always ensure to quote your banker's name, ) or otherwise please give draft on delivery (dod) to cargo service.rates : the rates given (if any) are ex-godown roorkee.packing : these rates will be inclusive of packaging.destination : please mention clearly mode of transport with destination. We shall not be responsible for breakage or shortage in transit. Customers desiring to get their consignment insured can get them insured at their own cost.tax : 4.5% cst will be charged as sales tax.(subject to change time to time)excise : at present we are exempted from excise duty. Note :  samples can be sent on request.the rates given (if any) are valid up to 90 days form the date given above, there after subject to confirmation.