Product Description
Wollastonite
Introduction:
Wollastonite is composed of Ca3 [Si3O9].Triclinic system.They are usually lamellar, radial, or fibrous aggregates.White microstripe gray.Glass luster, cleavage surface pearl luster.Hardness is 4.5 ~ 5.0.The cleavage parallel {100} is complete and the parallel {001} is medium. The intersection Angle of the two cleavage planes is 74°.Density 2.78~2.91 g/cm3.It is mainly produced in the contact metamorphic zone between acidic intrusive rock and limestone, and is the main mineral component of skarn.In addition, it is found in some deep metamorphic rocks.Used as: raw materials or fillers for papermaking, ceramics, cement, rubber, plastics, etc.Gas filtration materials and heat insulation materials;Metallurgical fluxes, etc.
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Applications:
1,ceramic industry: ceramic raw materials by adding the right amount of wollastonite, can significantly reduce the firing temperature, shorten the time of firing to achieve a fast low-temperature firing, a large number of fuel savings, significantly reduce product costs. At the same time, improve the mechanical properties of products, reduce product cracks and stripes, improve product yield.
2, paint and coatings industry: in the paint with wollastonite filler or emulsion, you can get high-quality bright colors of paint, and have the coating and anti-aging properties. White wollastonite is a good raw material for high-quality white paint and soft pastel paint, easy to brush, the surface of a slide, has a high resistance to weathering.
3, rubber and plastics industry: rubber and plastic can be done to strengthen the filler, with the thermosetting and thermoplastic resin and mold resin model, with good thermal shock resistance and enhance stability. Filled in the epoxy resin, before plastication has low water absorption, low dielectric constant and low viscosity, good performance.
4, other aspects: wollastonite can also be used for steelmaking slag, welding electrode coating, ceramic mold, grinding materials and grinding wheel production, paper filling agent, the production of white cement, manufacturing special electrical ceramics and other rare minerals raw material.
The role of wollastonite in welding rod
Wollastonite mainly plays the following roles in the welding rod:
Melting and slagging additives: wollastonite can inhibit the discharge during the welding process, reduce splashing, and improve the fluidity of the slag. This can make the weld molding more clean and beautiful .
Enhanced mechanical strength: wollastonite can provide calcium oxide to the electrode, and bring silica, thus obtaining a highly alkaline slag. This slag helps to reduce porosity and other defects in the joint, thereby increasing the mechanical strength of the weld.
Improve oxidation resistance and corrosion resistance: Adding wollastonite to flux-cored wire can improve the oxidation resistance and corrosion resistance of the wire, while increasing the fluidity and stability of welding, reducing the generation of welding defects and cracks.
Improve the use efficiency of alloying elements: wollastolite can also adjust the fluidity and wettability of metal liquid in welding, effectively control the shape and size of the weld, so as to improve the use efficiency of alloying elements and reduce welding cost.
Improve the weld surface quality and mechanical properties: the addition of wollastonite can also improve the quality and mechanical properties of the weld surface, and improve the strength and toughness of the welded joint.
Reduce the amount of spatter and dust: in the formula of titanium junction 421 electrode, wollastonite can replace part of the carbonate, thereby reducing the amount of spatter and dust, while reducing the amount of carbon ferromanganese, reducing the cost of the formula .
Increase the bonding force and fluidity of the sintered flux: wollastonite as a filler material can increase the density and hardness of the sintered flux and improve the welding quality .
Adjust the chemical composition and physical properties of the sintered flux: wollastonite can adjust the chemical composition and physical properties of the sintered flux to adapt to different welding environments and requirements .
In summary, wollastonite plays a multi-dimensional role in the electrode, from melting, slagging to enhance mechanical strength, improve oxidation resistance and corrosion resistance, to improve the surface quality and mechanical properties of the weld, as well as adjust the bonding force and fluidity of the flux, are its important functions in the electrode.
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FAQ:
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q:How about the price and quanlity?
A:Factory price,Good Quality,Indicators of stability.
Q:How many years of experience in supply?
A:
A long stable supplier.
Q:Do you accept customization?
A:We could like to give you suitable suggestion about Fritted according to your detail application.
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