41results about How to "No abnormality" patented technology

The invention discloses a method for etching InP materials using RIE equipment and etching InP materials, and relates to the field of dry etching of semiconductor materials, comprising the following steps: S1, growing a layer of SiO on an InP epitaxial wafer through PECVD equipment 2 Thin film; S2, through the photolithography process, copy the pattern to be etched on the mask plate on the photoresist; S3, transfer the pattern on the sample photoresist after photolithography to SiO 2 On the barrier layer; S4, remove the photoresist by wet degumming; S5, wash the sample to be etched with KOH solution for 2 to 3 minutes, rinse and dry after cleaning; S6, load the sample into Etching is performed in the chamber of the RIE process. The method for etching InP material by using RIE equipment in the invention solves the problem of sample contamination by polymer by-products produced in the process of etching InP by reactive ion etching equipment by improving the dry etching process.

The invention discloses a steam turbine low-pressure cylinder shaft sealing concave nest processing device and method. The device comprises a knife seat assembly, an upper box body and a lower box body; the lower box body is mounted below the upper box body, a hollow main shaft is mounted between the upper box body and the lower box body, the inside of the hollow main shaft is provided with a transmission shaft, the knife seat assembly is mounted on outer walls of one sides of the upper box body and the lower box body, the knife seat assembly is provided with a boring arm, a balancing weight is installed at the bottom of the knife seat assembly, a motor is mounted on the top of the upper box body, a worm wheel is mounted inside of the upper box body, and a base is mounted at the bottom ofthe lower box body. The steam turbine low-pressure cylinder shaft sealing concave nest processing device and method ensures that a set of tooth surfaces meshed with a turbine in the transmission direction of a worm are fitted all the time, impact of the worm tooth surfaces to the meshed turbine tooth surfaces during starting is eliminated, and the cutting torque is balanced.

The present invention relates to reaction equipment of biomass engine gas for a vehicle, which belongs to the reaction equipment field of biomass high temperature catalytic cracking and dry distillation gas. The reaction equipment comprises the following parts: a furnace body (1), a washing and cooling device and a dewatering and filtering device, a heat-insulation layer (19) arranged at the external part of the furnace body (1). The reaction equipment of biomass engine gas for vehicle is characterized in that the furnace body (1) is divided into a cracking destructive distillation chamber (15) and a main radiation chamber (16) through the inner wall of a furnace, the two sides of the main radiation chamber (16) are provided with secondary radiation chambers (24) which are communicated, cracking pipes are provided inside the cracking destructive distillation chamber (15) and the main radiation chamber (16), two cracking pipes are connected through a gas buffer (11) under a grate (18),an output terminal of the cracking pipe in the main radiation chamber (16) is connected with the washing and cooling device outside the furnace body (1), the washing and cooling device is connected with an air inlet pipe (9) through a spray pipe (6), the dewatering and filtering device is connected to a gas output tube (10). The present invention has the advantages of environmental protection andhigh thermal efficiency. The produced gas can be directly applied to the vehicle engines.

The invention discloses a plastic floor pad reinforcing layer. The plastic floor pad reinforcing layer is prepared from a first raw material component and a second raw material component, wherein the first raw material component comprises 950 to 1000kg of a polyether polyol 240, 2000 to 2100kg of powdered steatile, 38 to 42kg of color paste and 260 to 280kg of toluene; and the second raw material component comprises 0.1625kg of diphenyl dichlorosilane, 230 to 240kg of 4,4' -diphenylmethane diisocyanate (MDI), 50 to 60kg of 1-4-butylene glycol and 18 to 22kg of white carbon black. A preparation method of the plastic floor pad reinforcing layer comprises the following steps of adding the first raw material component into a preparation device, heating to a temperature of 130 DEG C for dehydration, carrying out heat preservation, dividing the dehydrated first raw material component into a first part and a second part, adding diphenyl dichlorosilane and MDI in the first part, carrying out heat preservation at a temperature of 85 to 90 DEG C for 2 hours, adding 1-4-butylene glycol into the second part, carrying out heat preservation at a temperature of 85 to 90 DEG C for 2 hours, cooling to a temperature of 50 DEG C, carrying out discharging, and mixing uniformly. The plastic floor pad reinforcing layer is an environmentally friendly healthy floor material, and can be fast and easily produced.