51results about How to "Extend the life of noodles" patented technology

The invention discloses high-performance cold patch asphalt, a cold patch material based on a waste asphalt pavement material and preparation methods of the cold patch asphalt and the cold patch material, and belongs to the field of road engineering. The cold patch asphalt is prepared from an active recycling additive and 90# road petroleum level-A asphalt in a weight ratio of 1:(0.9-1.1) by mixing. The waste asphalt pavement material is adopted as aggregate of the cold patch material. Compared with the prior art, the cold patch asphalt can be subjected to a chemical reaction with old asphaltin the waste asphalt pavement material, so that pavement performance of the cold patch material can meet high practical requirements, service life of the cold patch material is prolonged, pavement diseases are reduced, and good popularization and application values are realized.

The invention discloses a high temperature resistant steam turbine blade. The chemical composition of the steam turbine blade is: C: 0.19-0.21%, Mn: 0.55-0.57%, Si: 0.20-0.22%, Al: 0.38-0.40%, V: 0.30‑0.32%, Ti: 0.40‑0.42%, Ni: 0.12‑0.14%, Sn: 0.06‑0.08%, Zr: 0.25‑0.27%, S≤0.025%, P≤0.025%, Cu≤0.20%, Lanthanide rare earth: 0.20‑0.22%, the balance is Fe; the present invention also designs the production process of changing the steam turbine blade, which is simple and low in cost, greatly improves the impact toughness of the blade, and improves the high temperature resistance of the blade , Nitriding surface treatment improves the service life of the blade.

The invention relates to a full internal plastic composite steel tube and flange combination piece and a molding process thereof, and belongs to the technical field of engineering pipes for medium conveying and manufacturing. The end face of a flange is integrally connected with the end face and the inner wall of a steel tube to be provided with a rotary plastic layer, and the matching face of the rotary plastic layer and the flange and the matching face of the rotary plastic layer and the steel tube are in fusion welding fixedly; and during molding, the two ends of the steel tube are sealed through end caps, and a cavity formed by connecting a cover plate, a molding check ring and the flange in a defined manner forms a molding zone of the rotary plastic layer matched with the flange. When the technology is applied, the steel tube and the flange are completed wrapped through the overall molded rotary plastic layer, the possibility of contact between conveyed media and the metal faces of the steel tube and the flange is thoroughly avoided, rotary plastic layers of two adjacent flanges are in butt joint to form sealing in the connecting process, a sealing ring is not needed any more, and the problems of leakage and the like caused by non-in-place sealing or sealing ring aging are solved; and checking of a professional institute proves that after specimens are in butt joint, under the 1.60 MPa hydrostatic testing pressure, leakage at the 15 mim tubular products and connecting positions is avoided, and conveying medium permeation corrosion hidden dangers are thoroughly eliminated.

The invention discloses a production process of antistatic wall cloth, which comprises the following steps, step 3: put the mixed material and the added material into the internal mixer to obtain the block mixed material, and use the two-roller open mill to grind the block mixture The material is further mixed and plasticized to obtain a plasticized block mixture; step 4: use a filter to plasticize the block mixture to filter, remove impurity particles, and obtain a purified block mixture; step 5: use a four-roller calender Carry out calendering to the purified block mixture to obtain the bottom layer and the surface layer; step 6: use laminating equipment to bond the bottom layer, filament cloth and surface layer in order to obtain anti-static wall coverings. The present invention relates to the technical field of wall coverings . The finished product produced by this process has uniform holes and channels, which are connected to each other, so it has strong adsorption capacity, which makes the anti-static wall covering no peculiar smell, and the filament cloth is used to enhance the overall stability of the anti-static wall covering.