39results about How to "Improve service life effect" patented technology

A rotor blade arrangement (20), especially for a gas turbine, which can be fastened on a blade carrier (19) and includes in each case a blade aerofoil element (10) and a platform element (14), wherein the platform elements (14) of a blade row form a continuous inner shroud. With such a blade arrangement, a mechanical decoupling, which extends the service life, is achieved by the blade aerofoil element (10) and the platform element (14) being formed as separate elements and by being able to be fastened in each case separately on the blade carrier (19).

The invention discloses an ozone oxidation catalyst protective agent for degrading organic wastewater. The protective agent is prepared from 6-10 wt% of composite active components composed of manganese oxide, cobaltous oxide and rare earth oxide, 35-45 wt% of coal ash, 2-5 wt% of carbon active pore-forming agent, 40-50 wt% of kaolin and 1-5 wt% of methylcellulose binder through synthesizing, mulling, balling, drying, screening and firing. The composite active components are synthesized by 75 wt% of MnO2, 20 wt% of CoO and 5 wt% of La2O3 through a co-precipitation method. The ozone oxidation catalyst protective agent is an efficient organic wastewater purifying ozone oxidation protective agent prepared from the composite active components, is suitable for wastewater treatment in petrifaction, chemical engineering, spinning, printing and dyeing, papermaking and the like, not only has good impurity filter-away and supporting functions, but also has an excellent degrading effect and high mineralization capacity, is good in wastewater CODCr removal rate and total organic carbon (TOC) removal rate, and has black contrast increase rate of 15%.

The invention discloses an automobile alternator, which relates to the technical field of auto parts, and comprises a carbon brush mounting seat body, a semiconductor refrigerating sheet and a cooling water cavity. A piston cylinder is fixedly connected to the outer wall of the carbon brush mounting seat body, and the piston The inner wall of the cylinder is sealed and slidably connected up and down with a piston plate, the cavity wall of the cooling water chamber, the cylinder wall of the piston cylinder and the plate wall of the piston plate are jointly connected with a radiating cylinder in an alternately up and down sealing and sliding connection, and the upper part of the piston plate The surface and the cavity formed by the inner wall of the piston cylinder jointly store the mercury medium, and the outer wall of the carbon brush mounting seat body is fixedly connected with a support shaft. Through the good cooperation between the above-mentioned structures, the present invention has the ability to replace a single heat dissipation column with two heat dissipation cylinders, and when the temperature of any one of the heat dissipation cylinders is too high, the two heat dissipation cylinders can be replaced alternately. On the one hand, the effect and efficiency of heat dissipation are improved, and on the other hand, the effect of prolonging the service life of the heat dissipation object.

The invention provides an automatic control method of a tubular billet tail ring of a perforating machine. The automatic control method is characterized by comprising the following steps that 1, a perforating unit roller operates in a no-load speed state and is bitten into a pipe blank; 2, after time is delayed for T1, the speed is increased to the rolling speed at an accelerated speed I; 3, whenthe current pipe blank is rolled, high-speed rolling time T2 of the current tubular billet is calculated according to rolling time of a former steel pipe, and T2 is equal to T2 upper + (T3 upper-T3 setting)*V3 / V2; 4, in the steel polishing process, the speed is decreased to the steel polishing speed at an accelerated speed II; and 5, after steel polishing is completed, time is delayed for T4, andthe roller speed is restored to the steel biting speed. According to the method, the tubular billet tail ring after perforating is eliminated basically, and the problem that due to the tubular billettail ring, the surface of a core bar is damaged is solved basically. By the adoption of the automatic control program, the problem of the tubular billet tail ring generated by the perforating machinecan be well controlled, the technology can meet the site production requirement, and the effects on stability of the production quality and normal use of the core bar are remarkable.

The invention discloses a cold state integral repairing material with high adhesiveness for a wall of a steel ladle. The material comprises the components in percentage by weight as follows: 35-45% of extra-superior alumina particles, 35-45% of corundum particles and fine powder, 5-15% of fused magnesite fine powder, 2-12% of alpha-Al2O3 micro-powder, 1-5% of silica fume and 0.1-0.5% of additive. The additive is an efficient water reducer. The extra-superior alumina particles are processed by extra-superior alumina which is processed to 5-3mm and 3-1mm grades by a crushing and screening device. The corundum particles consist of 3-1mm and 1-0mm corundum materials. The granularity of the corundum fine powder is 0.088-0mm. The proportional region of the corundum particles to corundum fine powder is 1: (1.8-2.2). Field actual application of the cold state integral repairing material with high adhesiveness for the wall of the steel ladle shows that the material is good in adhesiveness due to less bounce, nearly free from falling after being roasted, remarkable in effect of prolonging the service life of the steel ladle liner and remarkable in economic benefit. In addition, the material is nearly free from falling after being roasted, so that the safety of the steel lade during use is greatly improved.

The invention relates to a method for treating a rum-aging oak barrel in microwaves. The method comprises the following steps: (1), after an oak barrel ages rum for one month, performing a first microwave treatment on the rum-aging oak barrel by using microwave with the frequency of 50-30,000 MHz and the power of 1-12 kW, and during later five months, performing once microwave treatment to the rum-aging oak barrel by using the microwave with the frequency of 50-30,000 MHz and the power of 1-12 kW in every month; (2), during 6-18 months when the oak barrel ages the rum, performing once microwave treatment on the rum-aging oak barrel by using the microwave with the frequency of 50-30,000 MHz and the power of 12-24 kW in every month; (3), after the oak barrel ages the rum for 18 months, performing once microwave treatment to the rum-aging oak barrel by using the microwave with the frequency of 50-30,000 MHz and the power of 24-60 kW in every month. According to the method for treating the rum-aging oak barrel in the microwaves, micropores in the inner wall of the oak barrel are abundant, the blockage during aging is prevented, and the purposes of improving the rum aging quality, accelerating the rum aging and prolonging the service life of the oak barrel are finally achieved.