53results about How to "Guaranteed final performance" patented technology

The invention discloses a forging forming technology for a large-size high-intensity and heat-resistant magnesium alloy thick plate and provides a forging forming technology for a magnesium alloy thick plate which is thicker than or as thick as 150mm. The forging forming technology comprises the steps of large-furnace smelting, semi-continuous casting, homogenizing annealing, variable-temperature multi-directional forging, fast forging and after-forming thermal treatment, wherein the variable-temperature multi-directional forging is executed on an oil press; before forging, the temperature of an ingot blank is preserved at 500-530 DEG C for 4-6 hours; the pressing speed is 200-400mm / min, the upsetting gate pressing amount is 30-50 percent, and the swaging gate pressing amount is 5-10 percent; the fast forging is executed on an air hammer; before fast forging, the temperature of the ingot blank is preserved at 480-500 DEG C for 2-4 hours. According to the forging forming technology, the high-temperature plasticity of a magnesium alloy is fully achieved, and the usability is obviously improved; at the temperature of 200 DEG C, the tensile strength of the thick plate in the length direction, the width direction and the height direction is higher than or equal to 330MPa, and the elongation rate is larger than or equal to 8 percent.

The invention belongs to the technical field of cutter manufacturing, and particularly relates to a cutting edge treatment method. In order to solve the problem that when imported high-quality steel is adopted to manufacture a cutter so as to improve the cutting edge performance of the cutter at present, the manufacturing cost of the cutter is high, the invention discloses the cutting edge treatment method. The cutting edge treatment method specifically comprises the following steps that S1, manufacturing preparation of a cutter is carried out, and the cutting edge part is cleaned; S2, a welding and laser cladding combined mode is adopted for machining a cutting edge strengthened layer; and S3, the cutting edge strengthened layer is coped, and final cutting edges are obtained. When the cutting edge treatment method is adopted for cutting edge treatment, not only can the performance of the cutting edges be greatly improved, the use effect of the cutter is guaranteed, but also the requirements for cutter body materials can be reduced, and the cost of the cutter is reduced.

The invention relates to a manufacturing technique of a wood-gum tubular element, in particular to a disposable injection molding technique and device of a CPVC three-way tubular element. The technique comprises technical processes of charge mixture, drying, injection made, pressure maintaining and open modeling, wherein a heating position of a charging barrel of an injection machine is divided into seven segments in the process of injection, the temperature ranges of the segments are respectively 150-155 DEG C, 168-173 DEG C, 162-167 DEG C, 160-165 DEG C, 155-160 DEG C, 150-155 DEG C, and 145-150 DEG C, and the temperature of a mould is controlled between 60 and 70 DEG C. When injecting, the pressure of ejection is divided into three segments which are respectively 58 MPa, 60 MPa and 78 MPa. The pitch of screw of a screw rod of the injection machine used by the method is equal to the diameter of the screw rod, a feeding segment takes up 25 percent of the total length, a compression segment takes up 50 percent of the total length, and a homogenizing segment takes up 25 percent of the total length. The invention achieves the disposable injection molding of a DN400 large-scale three-way tubular element via the improvement of the technique and the device.

The invention relates to a production method of a special-shaped screen film, comprising: according to the number of projection channels, using a path tool to describe the shape of a real special-shaped screen by channel, forming a vector grid: projecting the vector grid on the real special-shaped screen, according to the projection Adjust the vector grid according to the positional relationship between the vector grid and the real special-shaped screen; set up the three-dimensional virtual screen body of the real special-shaped screen, carry out texture mapping to the three-dimensional virtual screen body with a standard grid, and divide it into at least one Subregions, convert each said subregion into a mesh and separate: create a plane, use the adjusted vector network as the texture map of the plane, adjust the mesh so that the mesh coincides with the texture map of the plane ; Use the real film as the texture map of the adjusted 3D virtual curtain body and render the output. Compared with the prior art, the present invention has the advantages of being simple, fast, and highly adaptable, and is not subject to too many limitations of the construction conditions of the theater itself, and the configuration conditions of software and hardware.

The invention relates to a highly magnetic induction, linear magnet-temperature compensation alloy with broad temperature regioand its production process. The alloy components in percent are as follows: Ni 31.5-32.5%, Mn<=0.4%, Si<=0.3%, C 0.10-1.50%, surplus Fe. The production process is: first adopting vacuum induction melting then casting to make electrode bar, then electroslag remelting it to cast ingot, heating to 1100-1150 DEG C, hot forging hot-rolled sheet blank, heating to 1050 DEG C-1100 DEG C, hot-rolling to sheet, 1050 DEG C-1100 DEG C heat treatment, acid cleaning, cold rolling and obtaining band of finished product thickness, after processing element, using after final ageing treatment 1-2 hours in vacuum heat treatment furnace under 400 DEG C-500 DEG C. The inventive alloy has a wider usage temperature range, temperature point for testing is more than before, and B-t linearity is well, so the inventive alloy surpass the existing FeNi magnet compensation alloy in usage temperature range and magnet compensation ability.

The invention discloses a hygroscopic catalyst and a preparation method thereof. The hygroscopic catalyst comprises an oxidant, an incendiary agent, chloride and carbonate; 10 to 20 mass percent of liquid rubber is taken as an adhesive; toluene diisocynate is added to serve as a curing agent; and the content of the curing agent is 1 / 15 to 1 / 13 of the using amount of the adhesive. The method comprises the following steps of: putting the chloride, the incendiary agent, the carbonate and the adhesive into a kneading machine, mixing uniformly, adding the oxidant at intervals, mixing uniformly, adding the curing agent for mixing, vacuum-pouring or extruding and squeezing mixed materials into a shell, and performing high-temperature curing in a drying oven to obtain a finished product. Various ingredients of the hygroscopic catalyst produced by adopting a pouring production process are difficult to damp and deteriorate due to the crosslinking coating effect of the liquid rubber adhesive, sothe performance of the product is guaranteed. Moreover, the catalyst has high bonding strength, and cannot break due to the vibration. By the method, a production process is simplified, production period is shortened, the mechanical sensitivity of the catalyst is reduced, and the safety of the catalyst is improved.

The invention relates to a manufacturing technique of a wood-gum tubular element, in particular to a disposable injection molding technique and the devices of a CPVC straight-through tubular element. The technique comprises technical processes of charge mixture, drying, injection molding, pressure maintaining and model opening, wherein a heating portion of a charging barrel of an injection machine is divided into seven segments in the process of injection, the temperature ranges of the segments are respectively 150-155 DEG C, 168-173 DEG C, 162-167 DEG C, 160-165 DEG C, 155-160 DEG C, 150-155DEG C, and 145-150DEG C, and the temperature of a mould is controlled between 60 and 70 DEG C. When injected, pressures of an ejection is divided into three segments which are respectively 55 MPa, 60MPa and 75 MPa. The screw pitch of a screw rod of the injection machine used by the method is equal to the diameter of the screw rod, a feeding segment takes up 25 percent of the total length, a compression segment takes up 50 percent of the total length, and a homogenizing segment takes up 25 percent of the total length. The invention achieves the disposable injection molding of a DN400 large-scale straight-through tubular element via the improvement of the technique and the device.

A method for producing a carbon-based catalyst for synthesis gas by reforming methane and carbon dioxide, comprising the following steps: step 1, taking the coal direct liquefaction residue with a particle size of 60-80 mesh and a composite modifier according to the mass ratio of 1: (1-3) Mix and grind evenly; the composite modifier includes 90% to 98% alkali and 2% to 10% nitrate in terms of mass fraction; step 2, heat up the obtained uniformly ground mixture under an inert atmosphere for carbonization treatment; step 3 1. Cooling the carbonized mixture and washing it to neutrality; step 4, drying the mixture washed to neutrality to obtain a carbon-based catalyst. The present invention uses Shenhua coal direct liquefaction residue CLR as a raw material to obtain a carbon-based catalyst through carbonization treatment, effectively utilizes the main by-products during direct coal liquefaction, has a simple preparation method, and the prepared catalyst has a large specific surface area and is effective for methane carbon dioxide reforming reaction better catalytic activity.