36results about How to "Not easy to break and crack" patented technology

This invention relates to a method for manufacturing quartz substrate for optical devices. The method comprises: (1) washing quartz rod or quartz tube, and fixing in a high temperature graphite oven; (2) introducing inert gas into the high temperature graphite oven; (3) pulling, wire-drawing and cutting the quartz rod or quartz tube to obtain quartz substrate. The method has such advantages as low cost, mass production, and high product quality.

A cable of high flame-retardant environmental protection and fire-fighting is composed of a single core or multiple cores wrapped with an XLPE insulation layer separately to become an insulation conductor filled with inorganic filling materials of asbestos base, the insulation conductor beam is covered with a betting layer, an oxygen-isolation layer, s steel belt layer and an outer protection layer orderly, among which, the belting layer is a lap-wound one bound by alkali-free glass silk belt layer is a galvanized one of double-layer gap winding, the oxygen-isolation layer and outer protection layer are high-molecular compounds with the olefine polymer as the basis mixed with hydra-hydroxide by a coupler.

The invention relates to a method for making a non-combustible decorative board. The base material is made of a mixture of pulverized coal slag, quartz powder and lime in a granular state. The quartz powder has obvious guiding properties to the mechanical properties of the product and can improve the nail-holding force of the base material. ;Quartz powder itself is not easy to bond. Lime is an air-hardening inorganic gelling material with calcium oxide as the main component. The addition of lime effectively solves the problem that quartz powder is difficult to bond and form, making the substrate have good plasticity; Coal slag particles have good granularity, and are used as aggregate in the mixture of coal slag, lime and quartz powder to support and solidify the formed substrate; coal slag is formed in the mixture of quartz powder, lime and fiber The three-dimensional space structure is conducive to the flow of phenolic resin, ensuring that the fiber will not be deformed due to the flow pressure generated by the injection of the resin, thus ensuring the uniformity of the voids in the fiber prefabricated substrate.

The invention relates to a deformed wear-resistant ceramic block with rubber and the manufacturing method thereof. The invention is characterized in that a rubber layer, a metal sheet and a deformed ceramic block are arranged in sequence and then are vulcanized and adhered into a whole to obtain the deformed ceramic block with rubber. The detail producing method includes the following steps: A. ametal sheet is selected, the geometry size of the metal sheet is as same as that of the sticking surface of the deformed ceramic block; B. the high-temperature-resistance rubber is directly vulcanized onto the metal sheet by a vulcanizing steel die; C. the sticking surfaces of the metal sheet and the deformed ceramic block are cleaned, the mixed general high-temperature adhesive which can be bought in market is coated on the sticking surfaces which can be adhered into a whole in this way, the deformed wear-resistant ceramic block is obtained after the high-temperature adhesive is solidified. The invention has the advantages of simple structure, easy processing method, performances of wear and tear resistance, high temperature resistance of 300 DGE C and impact resistance, as well as good strength, thereby being not easy to be broken and peeled, thus the service life of the invention is greatly prolonged.

The invention discloses a steel pipe embedded two-way welding process, which belongs to the field of welding. A steel pipe embedded two-way welding process, through the arrangement of two-way welding aid pipes, during high-temperature welding, the outer welding sheet can be formed on the cross-section of two steel pipes Radial welding seam, after heating, the inner welding powder block melts and contacts with the inner wall of the steel pipe, and can form a transverse weld seam inside. Compared with the radial weld seam in the prior art, the welding strength is significantly improved, and the welded steel pipe is not easy to weld. Cracking and breaking, and at the same time, in conjunction with the temporarily sealed environment in the horizontal welded pipe, the high thermal conductivity gas expands after being heated. On the one hand, the molten inner welding powder is pushed by the metal shrapnel, so that the welding layer formed by the molten inner welding powder and the inner wall of the steel pipe is more dense. It is stable and further improves the welding strength. On the other hand, the high thermal conductivity gas pushes the hollow pre-sealed ball to separate it from the horizontal welded pipe and contact the sealing performance of the horizontal welded pipe, effectively preventing the high thermal conductivity gas from expanding and causing the transverse welded pipe to burst due to excessive expansion.