82results about How to "No depression" patented technology

The invention discloses a laser and MIG (metal-inert gas) arc composited welding method for high-nitrogen steel. The laser and MIG arc composited welding method is characterized by comprising the following steps of: design of a welding joint; design of a welding mode; setting of a composite way and heat source spaces; selection of protective gas for the composite welding; setting of welding technology parameters according to the composite way; and synchronous implementation of the composite welding. Compared with the prior art, the laser and MIG arc composited welding method has the advantages of being capable of implementing the welding of the high-nitrogen steel with middle thickness and achieving weld joints which have clean and smooth surfaces and are good in forming and free from sunken parts; and meanwhile, the welding method has the characteristics of low loss and uniform distribution of nitrogen elements at connectors, high welding penetration, high welding speed, small deformation of workpieces, low assembly requirements and the like.

The invention discloses a manufacture method of a colorful flexible printing corrugated box, comprising six steps such as corrugated bonding, drying, throwing and cutting, preparing ink, forme and flexible printing. A corrugated cardboard with special standard is taken as a printing material, thus leading no settlement phenomenon between the corrugated peak and corrugated valley of the corrugated cardboard to occur and ensuring clear printed patterns. By adopting no-shaft transmission flexible printing, overprinting precision of each color group can be independently adjusted, thus improving the overprinting precision of the printed products, and greatly improving the printing quality. By adopting knurled rolls in grid shape and ceramic material spayed on the surface of the knurled rolls, the surface performance of the knurled rolls is improved, the flexible printing quality is improved, the service life of the knurled rolls is prolonged, and the printing cost is saved. The content of the connecting material in ink is increased and the consistency of dye is increased, thus reaching required ink film thickness under low ink transmission quantity, and reaching the requirement of stable and full colors, high vividness of the printed product and good glossiness.

The invention belongs to the field of pipes, relates to an enhanced drainage pipe and mainly relates to a superstrong-muting PE (polyethylene) core layer micro-foamed drainage pipe which is suitable for wastewater discharging, engineering transforming projects and home decoration of villa communities, high-rise residential communities, high-grade residential apartment communities and the like and industrial building fields like water discharging, sewage discharging, waste discharging and the like of industrial enterprises. The superstrong-muting PE composite drainage pipe is a multilayer composite body formed by a high-density polyethylene resin inner layer, a middle PE micro-foamed layer and a high-density polyethylene resin outer layer, the thickness ratio of the inner layer, the middle layer and the outer layer is 1:4:1, and the PE micro-foamed layer is composed of regenerated polyethylene resin powder, inorganic filler or organic filler, natural fibers, a cross-linking agent, a coupling agent, a lubricating agent, a foaming agent and an antioxidant. The superstrong-muting PE core layer micro-foamed drainage pipe has excellent denoising and muting performance, superstrong resistance to chemical corrosion and good impact resistance.

The invention discloses a manufacturing process of a high-fall stepped circuit board. The manufacturing process comprises the steppeds of: manufacturing inner-layer circuits on a plurality of core boards separately, and manufacturing an auxiliary copper skin at a position corresponding to a stepped platform when the inner-layer circuit is manufactured on one of the core board; laminating the plurality of core boards into a multi-layer board; performing intermediate processing on the multi-layer board sequentially; performing depth-control groove milling inwardly at a position corresponding tothe stepped platform on the multi-layer board to a position 0.1 mm +/- 0.075 mm away from the auxiliary copper skin beform outer layer etching during the manufacturing process of an outer layer circuit, and forming the stepped platform after removing a cover; performing ablation on a residual dielectric layer at the bottom part at the stepped platform by means of laser; manufacturing the outer layer circuit through etching and removing the auxiliary copper skin at the stepped platform at the same time; and performing post-procedure processing on the multi-layer board to manufacture the high-fall stepped circuit board. According to the manufacturing process, the core board thickness is adopted to make a residual thickness step, the residual thickness tolerance of the stepped platform aftermolding and milling is ensured to meet requirements, the high-precision residual thickness tolerance is ensured to be realized, and the production efficiency can be improved.

The invention discloses a skid and scrub resistant rotationally molded product and a preparation method thereof, and belongs to the technical field of rotationally molded materials. The skid and scrub resistant rotationally molded product comprises a low-density polyethylene base and a skid and scrub resistant layer added on the base, and the skid and scrub resistant layer is composed of linear low-density polyethylene, an inorganic wear-resisting agent, a high molecular reinforcing agent and an auxiliary agent. The rotationally molded product is prepared through three steps: processing of the inorganic superfine wear-resisting agent, preparation of a rotational molding composition for the skid and scrub resistant layer, and preparation of the rotationally molded product. The skid and scrub resistant rotationally molded product has smooth inner surface and outer surface, is good in layer combination, and has no warping, no deformation, no foams and no recesses, the scrub-wear volume loss of the product is reduced by 50% or more, and the preparation method of the skid and scrub resistant rotationally molded product is simple, safe and obvious in effect.

The invention discloses a pharmaceutical composition for treating insomnia and process for preparation, wherein the composition is prepared from amber 1-4 weight parts, wild or spiny jujuba seed 6-10 weight parts, tuber of multiflower knotweed 6-10 weight parts, albizia bark 6-10 weight parts, ruby mica 2-6 weight parts, draconic dentes 2-6 weight parts, polygala root 0.5-3 weight parts, acorus gramineus soland 0.5-3 weight parts, rehamnnia root 1-4 weight parts, coptis root 1-4 weight parts, Chinese angelica root 0.5-3 weight parts, and poria cocos wolf 0.5-3 weight parts.

The invention discloses a rotational molding product and a preparation method thereof and belongs to the technical field of rotational molding materials. The rotational molding product comprises a linear low-density polyethylene substrate; a slipping and abrasion resisting layer is additionally arranged on the substrate; and the slipping and abrasion resisting layer is composed of linear low-density polyethylene, an inorganic abrasion-resisting agent, a macromolecular enhancing agent and an auxiliary agent. The rotational molding product is prepared through three steps of treating an inorganic ultrafine abrasion-resisting agent, preparing a rotational molding composition of the slipping and abrasion resisting layer, and preparing the slipping and abrasion resisting rotational molding product. The slipping and abrasion resisting rotational molding product has smooth inner and outer surfaces; the combination between layers is good; the rotational molding product has no warping, deformation, air bubbles and concave parts; the scraping abrasion loss volume of the product is reduced by 50% or more; the preparation method of the slipping and abrasion resisting rotational molding product is simple and safe and has an obvious effect.

The invention discloses a technology, and particularly discloses a welding technology. The welding technology is characterized by comprising the following steps of material obtaining, clearing before welding, preheating before welding, positioning welding and postweld treatment. The welding technology has the advantages that the steps are simple, operation is convenient, time and labor are saved, safety and reliability are achieved, the stability is good, gas hole weld beading is avoided, concave and undercut phenomena are avoided, forming is good, non-welding defects, cracks and the like are avoided, the requirements for resisting intergranular corrosion and embrittlement are completely met, welding engineering quality is ensured, and the working efficiency is greatly improved.

The invention relates to a fan-shaped cushion block for converter transformers and an installation method thereof. The fan-shaped cushion block is installed at the vacant position after the wire transposition and provided with a quadrant, and the quadrant is provided with an open slot. The method comprises the following steps: under the support of internal support bars, winding a wire to reach the prescribed number of turns, transposing and continuing to wind; supplementing the fan-shaped cushion block to the vacant position caused by wire transposition; and clamping a clamping block on the fan-shaped cushion block on the internal support bars of the coil. When the high-capacity converter transformer coil is used in the voltage application process, the wire at the transposition position can not be deformed, and the coil surface at the transposition position is flat without pits, thereby enhancing the electric strength of the coil; and the invention ensures smooth axial oil flow of the coil and reduces the problems of temperature rise and the like under the long-term working voltage of the converter transformer.

The invention belongs to the technical field of steel making, and particularly relates to continuous casting crystallizer casting powder for 400 stainless steel. The continuous casting crystallizer casting powder for 400 stainless steel comprises the chemical components of, by weight percentage, 35-40% of CaO, 40-48% of SiO2, 2.0-4.0% of Al2O3, 8-10% of Na2O, 5-8% of F- and 1-2% of solid C. The chemical components of the continuous casting crystallizer casting powder for 400 stainless steel are used cooperatively, a proper smelting speed is kept while the heat preservation function is guaranteed, and an obtained casting blank is smooth in surface, regular in folding mark and free of concaves or other quality problems.

The invention discloses a pipeline system for an integral bathroom. A water outlet of a toilet is connected with a toilet sewage discharge connector on a sewage discharge integration module by virtue of a sewage discharge connecting pipe, a water outlet of a washstand is connected with a washstand water drainage connector on the sewage discharge integration module by virtue of a washstand water drainage pipe, a water outlet of a floor drain is connected with a floor drain water drainage connector on the sewage discharge integration module by virtue of a floor drain water drainage pipe, a water outlet part of the sewage discharge integration module is in plug-in type connection with a pipe fitting embedded in a wall body, and the embedded pipe fitting is communicated with a main sewage discharge pipe. The toilet, the washstand and the floor drain are respectively butted with corresponding connectors on the sewage discharge integration module by virtue of telescopic corrugated pipes, the connectors are collected on the sewage discharge integration module, and quick connection and mounting are realized; arrangement of pipelines utilizes a space of waterproof disk bottom reinforcing ribs and a space of wallboard reinforcing ribs, connecting pipes are flat pipes, and space is greatly saved; and height of a wallboard mounting surface above the ground is lowered, and effective space of the integral bathroom is increased, so that people can feel more comfortable when entering the bathroom.

The invention discloses a welding technology of a steel pipe and a flange. The welding technology comprises the following steps that cleaning works are conducted before welding; preheating is conducted before welding; welding is conducted, firstly the position of 1/4 circle on the steel pipe is drawn, then the flange is welded to the position, a welding method of single-side welding and double-side forming is adopted to symmetrically weld three batches, then the flange is removed, and then welding issequentially conducted; and treatment is conducted after welding. The welding technology of thesteel pipe and the flange has the advantages that operation is convenient, time and labor are saved, safety and reliability are achieved, forming is good, and the work efficiency is improved.

The invention provides a method for increasing a cropping index while improving tomato breeding field soil. The method comprises the steps that in a solar greenhouse, a matrix is placed in a seedling disc, tomatoes are sown, and the seedling disc is covered with the matrix and a plastic film sequentially after sowing; after 80 percent of seed leaves come up, the plastic film is removed, and tomato seedlings continue to be cultivated; after the tomato seedlings grow with two leaves and one core, flat furrows are arranged outside the solar greenhouse in the east and west direction, the tomato seedlings are transplanted to the flat furrows, and the flat furrows are provided with an arch shed covered with double layers of plastic films; after the tomato seedlings grow with the plant height ranging from 20 cm to 30 cm, the tomato seedlings are planted to a plurality of cultivation furrows, two ears of inflorescences are reserved for each tomato seedling, and cultivation continues after pinching, wherein the distance between every two adjacent cultivation furrows ranges from 35 cm to 45 cm; after the tomato seedlings bloom and bear fruit, corns are interplanted between the cultivation furrows. According to the method, the cropping index can be increased, the land utilization efficiency can be improved, and the soil is improved.

The invention discloses a high-nitrogen steel double-beam laser and (N-MIG) electric arc composite welding method and relates to the field of material machining. Laser beams emitted by a solid laser are transmitted to a double-beam laser welding head through optical fiber, two beams of laser with adjustable energy are produced, reach a welding portion simultaneously and then are compounded with anN-MIG electric arc heat source in a paraxial manner, the laser and the N-MIG electric arc heat source jointly act on the to-be-welded portion, an eutectic pool is formed, and a high-quality welding seam is obtained. According to the method provided by the invention, a double-beam laser heat source with adjustable energy and the N-MIG electric arc heat source act on a high-nitrogen steel base material in a serial arrangement manner, efficient high-quality welding is achieved, and the method can be used for controlling distribution of welding temperature fields, improving the welding stabilityand the adaptability to connectors, effectively reducing nitrogen loss and improving the microstructure of the welding seam.

A Chinese medicine for rounding breast and regulating mensis is prepared from 12 Chinese-medicinal materials including trichosanthes fruit, Chuan-xiong rhizome, Chinese angelica root, white peony root, etc.

The invention relates to an embedded high manganese steel frog structure with the advantages of uniform wall thickness, stability and reliability in internal quality of a frog, high overall strength, casting enhancement, good machining performance, simplicity and reliability in assembly process and long service life of the frog. The structure comprises a high manganese steel frog; high manganese steel frog spacing boards are convex in structure and discontinuously distributed in frog bolt holes; high manganese steel frog heel end spacing iron has a solid structure; and two outer walls of the high manganese steel frog are uniform in thickness and form a box-type structure together with cross ribs. The invention has the advantages that 1, the structure is simple in design, easy to cast and good in machining and assembly; 2, comprehensive feeding in the casting process can be realized, the abrasion resistance of a point rail or a wing rail is enhanced, and the service life of the frog is prolonged; 3, the frog spacing boards are uniformly distributed in the bolt holes, and the convex structure is matched with the rail web of a steel rail, so that the overall stability of the frog is further enhanced; and 4, the two outer walls of the frog do not have hollowness and are uniform in thickness, and the heel end spacing iron has the solid structure, so that the overall strength of the frog is effectively improved.

The invention belongs to the technical field of materials, and discloses a one-component flame-retardant silica gel impregnating material for a piezoresistor, a method and application, and the one-component flame-retardant silica gel impregnating material for the piezoresistor comprises the following components in parts by mass: 65-85 parts of vinyl silicone oil, 5-25 parts of reinforcing resin, 15-30 parts of a flame retardant, 30-50 parts of a ceramization auxiliary agent, 3-10 parts of a thixotropic agent, 0.5-4 parts of a tackifier and 0.1-1 part of a catalyst. 0.1-1 part of an inhibitor and 3-20 parts of a cross-linking agent. The silica gel impregnated material has lower viscosity and higher thixotropic value, is convenient to encapsulate and instantly shape, does not contain an organic solvent, is safer and more environment-friendly, does not contain halogen and phosphorus elements, is simple in preparation process and good in flame retardant property, and meets the requirement of over-pressure flame retardance without open fire or the open fire time is less than 1s.

The invention relates to a Chinese medicinal preparation for chest fitting, which is prepared from raw materials including pseudostellaria root, raw astragalus root, lilyturf root, Chinese angelica root, white atractylodes rhizome, seed of cowherb, root of herbaceous peony, prepared rehmannia root, Bupleurum root, chicken's gizzard-skin, root of ballon flower and wild or spiny jujuba seed.

The invention discloses a seat type single pressurized oxygen cabin which comprises a flat spherical main cabin body, a cylindrical connecting pipe, a side open meshing type flanged door and a casing.The flat spherical main cabin body is internally provided with a human body supporting device, and the left and right sides and the front portion of the flat spherical main cabin body each are provided with an observation window. The cylindrical connecting pipe sleeves one end of the flat spherical main cabin body, forms an angle with the horizontal line and is fixed downwards slantly at the bottom of the flat spherical main cabin body, for the legs of the human body to stretch; the side open meshing type flanged door is connected to the side of the flat spherical main cabin body and can be opened outwards; the casing is arranged at the joint of the bottom of the flat spherical main cabin body and the cylindrical connecting pipe and completely covers the outer surface of the cylindrical connecting pipe, and an instrument board is disposed at a position of the casing opposite to the top of the cylindrical connecting pipe. When the seat type single pressurized oxygen cabin is used, a user can sit or recline in the cabin, it is convenient to go in or out of the cabin, a cabin door is opened or closed conveniently, the sealing is safe and reliable, the front end of a head is spacious,and people of different heights can stretch their feet without feeling of depression.