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38results about How to "Fully elastic" patented technology

Temperature-resistant natural rubber composition for damping member

The invention relates to a temperature-resistant natural rubber composition for a damping member. The composition is composed of the following raw materials, by weight, 100 parts of natural rubber, 0.8-2 parts of a dihydroquinoline anti-aging agent, 0.8-2 parts of an imidazole anti-aging agent, 15-25 parts of white carbon black, 15-25 parts of carbon black, 1.5-1.9 parts of a vulcanizing agent, 30-45 parts of naphthenic paraffin machine oil, 5-6 parts of zinc oxide and / or magnesium oxide, 2.8-3.5 parts of eleaostearic acid or zine stearate, 3-4 parts of a promoter, 2-2.8 parts of a dispersant and 50-65 parts of a filler. The sum of weight parts of the dihydroquinoline anti-aging agent and the imidazole anti-aging agent is less than or equal to 3.5 parts. A formula system with the combination of the anti-aging agents RD / MB is selected. With cooperation of the two types of anti-aging agents, experiments show that the optimum effect can be achieved. According to the temperature-resistant natural rubber composition for a damping member, elasticity of natural rubber can fully be maintained, and the defect that natural rubber cannot operate for a long time at 120 DEG C is overcome. The temperature-resistant natural rubber composition provided by the invention is temperature resistant, has high elasticity and has long service life.
Owner:TAIZHOU CITY GANG YANG RUBBER

Nuclear power station control rod drive mechanism's detachable joint and its preparation method

The invention discloses a preparation method of a nuclear power station control rod drive mechanism's detachable joint, comprising the following steps: 1) selecting raw materials and carrying out vacuum melting to obtain molten steel; 2) pouring an electrode by the use of the molten steel; 3) carrying out electroslag remelting of the electrode to obtain an electroslag remelting ingot, wherein the electroslag remelting ingot contains, by weight, 0.080-0.140% of C, Si being less than or equal to 0.50%, Mn being less than or equal to 0.80%, S being less than or equal to 0.020%, P being less than or equal to 0.030%, 0.50-1.00% of Ni, 11.50-13.00% of Cr, Co being less than or equal to 0.10%, Al being less than or equal to 0.050%, Mo being less than or equal to 0.60% and the balance Fe; 4) carrying out annealing treatment on the electroslag remelting ingot and then carrying out forging-cogging; and 5) carrying out annealing treatment on billets, carrying out hot rolling on round steel, carrying out quenching and tempering heat treatment on the round steel and carrying out ultrasonic flaw detection to obtain the nuclear power station control rod drive mechanism's detachable joint. By optimization of chemical composition and technology, the CRDM detachable joint obtained by the preparation method can safely operate under service conditions, a clutch part at an end portion operates within an elastic range and plastic deformation will not happen. Life meets design standards and national standard requirements of CRDM, and manufacturing nationalization of CRDM is realized.
Owner:中广核工程有限公司 +1

A corset type sternum protector

The invention discloses a camisole type breastbone protecting device. The camisole type breastbone protecting device comprises a camisole body made of warp knitting mesh cloth, and breastbones of a patient can be wrapped by the camisole body; the front chest portion of the camisole body is connected with a V-shaped structure, and the back portion of the camisole body is connected with a Y-shaped structure; the V-shaped structure and the Y-shaped structure are both made of stabilized yarn, warp knitting mesh and flinty cotton non-woven cloth; each shoulder portion of the camisole body is matched with the side face at the corresponding side in a detachable mode. According to the camisole body mainly made of the warp knitting mesh, sufficient elasticity, good breathability and effective supporting force are achieved; by means of the V-shaped structure at the front chest portion and the Y-shaped structure at the back portion, the breastbones can be supported and protected effectively. Through woven tape bracelets arranged at the shoulder portions, it is convenient for the patient to grasp when body position is changed, the action for protecting thoraxe can be made better, and the discomfort on account of displacement of breastbones is alleviated. By means of the camisole type design, namely the shoulder portions and the left side of the camisole body are provided with openings, the operation and nursing of medical personnel after an operation is completed are facilitated.
Owner:乐喆北京医疗科技有限公司
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