60results about How to "Combustion hindrance" patented technology

The invention discloses a dual-phase α+β magnesium-lithium alloy with excellent casting performance and heat transfer performance and a processing technology thereof. According to weight percentage, the composition of the alloy is: Li: 8.0‑10.0wt.%, Ge: 0.2‑0.8wt.%, Cd: 0.6‑0.8wt.%, Bi: 0.2‑0.5wt.%, Zr: 0.4‑ 0.8wt.%, Pd: 0.1‑0.2wt.%, Cu: 0.3‑0.5wt.%, Al: 1.8‑3.4wt.%, Fe: 0.2‑0.5wt.%, Mn: 0.1‑0.4wt.%, The balance is magnesium. The magnesium-lithium alloy for die-casting has high thermal conductivity that traditional magnesium-lithium alloys do not possess. This enables the alloy to have further specific applications in the occasions where the heat generation is large and the weight of the device is required, and it is convenient for large-scale industrial application.

The invention discloses Mg-Ca-In magnesium alloy for pressure casting and with high damping characteristic as well as a processing process thereof. The alloy comprises the following components in percentage by weight: 0.6 to 1.5 percent of Ca, 1.6 to 3.2 percent of In, 3.0 to 4.5 percent of Sn, 0.8 to 1.5 percent of Sb, 0.4 to 0.8 percent of Zr, 0.2 to 0.5 percent of Be and the balance of magnesium. The magnesium calcium alloy has excellent pressure casting property and also has excellent damping property. The bottom layer property of the traditional magnesium for casing is expected to be innovated and optimized, so positive significance in development and improvement of the magnesium alloy pressure casting process, even the whole pressure casting industry and the technology thereof is achieved.

The invention discloses a top blowing and lower combustion type boiler. The top blowing and lower combustion type boiler comprises a boiler body, and a fire grate is arranged inside the boiler body; an inner cavity of the boiler body is divided into a hearth and an ash chamber through the fire grate; a water jacket interlayer is arranged in the position, on the edge of the hearth, on the boiler body; a water inlet is formed in the lower end of one side of the water jacket interlayer; an upper opening of the boiler body is provided with a boiler cover; an air inlet is formed in the center of the boiler cover; an adjusting cover used for adjusting the size of the air inlet is hinged to one side of the air inlet; a smoke exhaust tank and water tanks are connected on the back side of the boiler body; a smoke vent is formed in the upper end of the smoke exhaust tank; the lower end of the smoke exhaust tank and the lower part of the hearth communicate with each other through a smoke exhaust channel which penetrates through the water jacket interlayer; the upper end of the water jacket interlayer communicates with the water tanks; and a water outlet is formed in the upper end of one of the water tanks. The top blowing and lower combustion type boiler has the beneficial effects that warm water entering the water tanks can be heated again, the utilization rate of heat energy is high, the combustion is sufficient, coal is saved, the heating speed of cold water is high, the temperature in the hearth can be prevented from decreasing, and combustion of coal in the hearth can be prevented from being hindered.

The invention discloses an oxidation-resistant Pb-Li-V lead-lithium alloy with high thermal stability. The alloy comprises the following components in percentage by weight: 1.4-1.8% of Li, 0.2-0.5% ofV, 0.5-0.8% of Sm, 0.3-0.8% of B, 1.4-1.9% of Ge, 0.4-0.6% of Zn, and the balance lead. The lead-lithium alloy has the high thermal stability which is not realized by a traditional lead alloy for a shielding material; and moreover, the lead-lithium alloy is high in oxidation resistance; the lead-lithium alloy is applicable to the fields such as the fields of nuclear piles, medical radioactive source shielding, and nuclear waste treatment in a tropical environment; with the adoption of the lead-lithium alloy, a nuclear reactor system can effectively safely run, and the service life of the system can be prolonged.

The invention discloses high-strength high-conductivity Pb-Li-Sc lead-lithium alloy for a shielding material and a processing technology thereof. The high-strength high-conductivity Pb-Li-Sc lead-lithium alloy comprises, by weight, 0.8-1.6wt.% of Li, 0.4-0.8wt.% of Sc, 0.2-0.5wt.% of Nb, 0.6-1.4wt.% of Co, 0.4-0.8wt.% of Sb, 0.1-0.2wt.% of Th, and the balance lead. The lead-lithium alloy has the high-strength high-conductivity performance which is not provided for traditional lead alloy for the shielding material. The high-strength high-conductivity Pb-Li-Sc lead-lithium alloy is applied to the fields of nuclear piles, medical radioactive source shielding, nuclear waste processing and the like, safe operation of a nuclear reactor system can be effectively ensured, and the system operationlife is prolonged.

The invention relates to a flame-retardant ACS composite material. The flame-retardant ACS composite material is composed of, by weight part, 80-100 parts of ACS, 2-4 parts of polyhexafluoropropylene,6-8 parts of flame retardant, 6-8 parts of chlorinated polyvinyl chloride, 0.1-0.3 part of dispersant and 0.1-0.5 part of antioxidant. According to the flame-retardant ACS composite material, the chlorinated polyvinyl chloride achieves self-extinguishment and can produce HCl during combustion, which can shield and dilute combustible gas and block further combustion and accordingly enhance the flame retardance of the flame-retardant ACS composite material; through certain flame retardance of the ACS as well as self-extinguishment of the chlorinated polyvinyl chloride, the flame retardant rating of the ACS can reach V-0 only by adding in a small amount of phosphorous-nitrogen fire retardant of WRO3.

The invention discloses an Ag-Li-Sm silver-lithium alloy with high thermal conductivity and electrical conductivity and a processing technology thereof. In terms of weight percentage, the chemical composition of the alloy is: Li:0.5‑2.5wt.%, V:1.0‑1.8wt.%, Pt:0.2‑0.4wt.%, Nb:0.3‑0.8wt.%, Sr:1.0‑ 1.6wt.%, Ca: 0.2‑0.4wt.%, Sm: 0.2‑0.5wt.%, Ho: 0.1‑0.2wt.%, S: 0.5‑0.8wt.%, B: 0.5‑0.9wt.%, The balance is silver. Compared with silver alloys used in traditional electrical contact materials, this material has excellent mechanical properties, high electrical conductivity and high heat transfer coefficient.