31results about How to "Inhibition of sinking" patented technology

In a hybrid integrated circuit device that is a circuit device of the present invention, a conductive pattern including pads is formed on a surface of a substrate. A first pad is formed to be relatively large since a heat sink is mounted thereon. A second pad is a small pad to which a chip component or a small signal transistor is fixed. In the present invention, a plated film made of nickel is formed on a surface of the first pad. Therefore, the first pad and a solder never come into contact with each other. Thus, a Cu / Sn alloy layer having poor soldering properties is not generated but a Ni / Sn alloy layer having excellent soldering properties is generated. Consequently, occurrence of sink in the melted solder is suppressed.

There is provided an injection molding method in which a molten resin, which is injected into a molding space formed between a fixed side mold including a movable insert and a movable side mold, is cooled in a state in which a surface of the molten resin comes into contact with the movable insert and thereby the surface is solidified, and internal solidification of the molten resin is completed by cooling the molten resin in a state where the molten resin and the movable insert are separated from each other by moving the movable insert before the internal solidification of the molten resin, whose surface is solidified in a state in which the surface comes into contact with the movable insert, is completed.

The present invention relates to a hot bulge forming apparatus, a hot bulge forming method and a product formed through hot bulge forming, which can suppress a generation of a dent at a lengthwise central side of a workpiece. In the hot bulge forming apparatus 1, a preheated tubular material 10b is disposed in a cavity 33A defined by dies 21A, 31A, air is supplied into an interior of the tubular material 10b so that the tubular material 10b is pressed against cavity surfaces 211A, 311A by the pressure of the air to thereby form the tubular material 10b into a shape defined by the cavity 33A. Thereafter, the resulting tubular material 10c is disposed in a cavity 33B defined by dies 21B, 31B, and air is supplied into an interior of the tubular material 10c so that the tubular material 10c is pressed against cavity surfaces 211B, 311B by the pressure of the air to thereby form the tubular material 10c into a shape defined by the cavity 33B while the tubular material 10c is cooled by the cavity surfaces 211B, 311B. Projecting portions 331 each having an arc-shaped section are formed at portions of the cavity surfaces 211A, 311A against which lengthwise end sides of the tubular material 10b are pressed.

A vehicle body member manufacturing method and a vehicle body member joint portion seal structure are obtained that are capable of suppressing sinking of a sealing material filled into a recess formed by a first member and a second member. A sealing material is filled into a recess provided between a general face of an upper end portion of center pillar R / F and a general face of side rail R / F. After the sealing material has cured, sealing material is filled into the recess on top of the initial sealing material. This enables the surface of the sealing material to be leveled, thus enabling sinking at the surface of the sealing material to be suppressed.

A vehicle body member manufacturing method and a vehicle body member joint portion seal structure are obtained that are capable of suppressing sinking of a sealing material filled into a recess formed by a first member and a second member. A sealing material is filled into a recess provided between a general face of an upper end portion of center pillar R / F and a general face of side rail R / F. After the sealing material has cured, sealing material is filled into the recess on top of the initial sealing material. This enables the surface of the sealing material to be levelled, thus enabling sinking at the surface of the sealing material to be suppressed.

The invention discloses a honeycomb glass pumice formula and a production process thereof. The formula comprises the following components in percentage by weight: 89 to 96.5 percent of glass particles, 0.6 to 5.8 percent of zeolite powder, 0.6 to 3 percent of borax, 0.3 to 1.2 percent of heavy calcium carbonate powder and 0.3 to 1.2 percent of light calcium carbonate powder. The production process comprises the following four steps of preparing materials; sintering and puffing at high temperature; cooling; smashing and screening. Accurate furnace internal temperature control is realized by increasing the material mixing accuracy and strictly controlling the conveying belt speed of a sintering furnace, so as to realize uniform porosity of honeycomb glass pumice, and the honeycomb glass pumice which is 0.25 to 1.25 in specific weight, 0.8 to 120 percent in water absorption and 0.8 to 450 mu m in aperture can be prepared. Raw materials are derived from waste white transparent glass, so that environmental pollution is prevented in production and use processes, and utilization of renewable solid waste resources is realized.

The invention discloses modified steel slag cement, and belongs to the technical field of building materials. A preparation method of the modified steel slag cement comprises the following steps: pulverizing and sieving steel slag to obtain steel slag powder; stirring the steel slag powder and sulfuric acid for reacting, performing cyclic freezing and unfreezing, and performing filtering and drying to obtain pretreated steel slag powder; performing ball milling, stirring and mixing on potassium permanganate and the pretreated steel slag powder, and performing high-temperature calcination to obtain calcined steel slag powder; performing ball milling, stirring and mixing on calcium carbonate, aluminum powder and the calcined steel slag powder, and performing combustion reaction to obtain modified steel slag powder; and adding cement, the modified steel slag powder, modified bagasse, a silane coupling agent and water to a mixer, and performing stirring and mixing to obtain the modified steel slag cement. The modified steel slag cement provided by the invention has excellent early strength, mechanical strength and stability.

The invention discloses modified coal gangue aggregate concrete and belongs to the technical field of building materials. The modified coal gangue aggregate concrete is prepared by the following steps: taking coal gangue aggregate and hydrochloric acid to react; filtering, washing and drying to obtain first-time treated coal gangue and acid leaching filtrate; ultrasonically dispersing the pre-treated coal gangue, nano iron powder and a saturated sodium fluoride solution; filtering, washing and drying to obtain second-time treated coal gangue; carrying out high-temperature reaction on the second-time treated coal gangue and cooling to obtain third-time treated coal gangue; mixing the third-time treated coal gangue and the acid leaching filtrate and stirring and mixing; then dropwise addingammonia water and filtering and washing to obtain fourth-time treated coal gangue; adding the fourth-time treated coal gangue into a tubular furnace and carrying out high-temperature reaction; coolingto obtain modified coal gangue crushed aggregates; stirring and mixing the modified coal gangue crushed aggregates, cement, fly ash, silicon ash, slag, water, a silane coupling agent and a water reducing agent to obtain the modified coal gangue aggregate concrete. The modified coal gangue aggregate concrete provided by the invention has excellent anti-freezing and dry shrinkage performance.

The invention discloses a preparation method of a sharp epoxy resin bonded diamond abrasive tool, the working layer of which is mainly made of diamond abrasives, epoxy resin binders, curing agents, auxiliary abrasives, fillers and auxiliary additives; Mix 5~20 parts of self-sharpening diamond, 5~28 parts of auxiliary abrasive, 10~40 parts of filler, 0.5~10 parts of other auxiliary agents, and mix them uniformly with 17~45 parts of liquid epoxy resin, curing agent After 5-25 parts are mixed and stirred evenly, the above-mentioned mixture with fluidity is injected into a plastic mold by pouring, and a sharp epoxy resin bonded diamond abrasive tool is obtained after curing; the above parts are mass percentages. Compared with the abrasive tools prepared by hot pressing, the present invention has simple preparation process, energy saving and emission reduction, can reduce the environmental pollution of solid dust, is green and environmentally friendly, and has high production speed. Compared with the existing foreign products, the present invention has high sharpness , Strong self-sharpening, good polishing effect, long life and so on.

The invention discloses a strip fully-mechanized top coal caving high cut and fill mining method of a thick coal seam under a coal mine railway. A strip type working face mining method is adopted; anda fully-mechanized top coal caving technology is adopted for mining. The strip fully-mechanized top coal caving and high-position cut and fill mining method is characterized in that the first weighting distance is taken as the basis of designing the inclination length of a strip type working face; a high filling roadway is constructed before the mining of the working face; a blasthole and a filling drill hole are constructed in the high filling roadway; a top coal area is blasted in advance through the blasthole, and a goaf is filled through the filling drill hole, so that the caving of overlying rocks is reduced, and the ground depression is suppressed; and pressing coal under the railway is converted into recoverable reserves, thus, the recovery rate of resources and the economic benefits are increased, and the length of service of the mine is prolonged.