34results about How to "Single weight" patented technology

The invention relates to the technical field of grinding wheels and particularly relates to a multifunctional resin grinding wheel and a production method thereof. The grinding wheel comprises the following components in percentage by weight: 20-30% of silicon carbide, 20-30% of white fused alumina, 20-30% of brown fused alumina, 15-20% of a binding agent and 10-15% of cryolite, wherein the binding agent is phenolic resin liquid or powder. The grinding wheel can be used for cutting various materials and has better cutting performance; the grinding wheel has lower unit weight than a conventional product with the same specification, and every grinding wheel can save the molding material by 10-20g; and the grinding wheel is good in sharpness, incapable of generating a burn injury phenomenon when being used for cutting stone, ceramic tiles, iron, aluminum, stainless steel and the like, and meanwhile, the cutting efficiency is also greatly increased.

Disclosed is a half-heavy refractory brick for dry-quenching furnace annular air duct. The half-heavy refractory brick is produced from raw materials including, by weight, 16%-25% of mullite aggregates 5-3mm in particle size, 15%-30% of mullite aggregates smaller than 3-1mm in particle size, 5%-15% of mullite aggregates smaller than 0.074mm in particle size, 5%-15% of andalusite smaller than 1-0.074 in particle size, 10%-30% of fined mullite powder, 3%-10% of fined andalusite powder, 5%-20% of hollow spheres, 1%-8% of kaolin micro powder, 0.01%-2% of an interface treating agent and 2%-5% of a binding agent. The production method includes: firstly, mixing the hollow spheres with the interface treating agent; then adding the fined mullite powder, the fined andalusite powder and the kaolin micro powder; evenly mixing all of the mullite aggregates, the andalusite, the hollow spheres and the binding agent; pressing into a brick; drying; baking for standby use. By the arrangement, problems that the brick for the dry-quenching furnace annular air duct is prone to bloating and cracking are solved, compression strength of the brick can reach more than 60MPa, unit weight of the brick can be lowered more than 10%, and usage period is greatly prolonged.

The invention relates to a plunger pump valve bank which comprises a valve seat. The plunger pump valve bank is characterized in that liquid inlet cavities are formed in the outer wall of the valve seat, the two end faces of the valve seat are both planes, the plane at one end of the valve seat is the liquid inlet plane, and the plane at the other end of the valve seat is the drainage plane; the liquid inlet plane is provided with an annular groove communicating with the liquid inlet cavities; a liquid inlet valve plate is arranged outside the liquid inlet plane of the valve seat and provided with liquid inlets, and a sealing surface is located between the outer edge of the liquid inlet valve plate and the outer edge of the liquid inlet plane; the liquid inlet plane is provided with drainage cavities, and the drainage cavities and the annular groove are arranged at intervals; the drainage plane is provided with liquid outlet cavities, and drainage channels enabling the drainage cavities and the liquid outlet cavities to communicate are formed in the valve seat; a drainage valve plate is arranged outside the drainage plane of the valve seat and provided with drainage holes, and a sealing surface is located between the outer edge of the drainage valve plate and the outer edge of the drainage plane. The plunger pump valve bank provided by the invention is small in size, high in pump efficiency and capable of effectively lowering the valve play flow rate.

The invention relates to a resin catcher used in an industrial water processing system comprising a cylinder body (1), filter cores (2), a filter core tube plate (3), a filter core tube plate installation ring (4), and a base plate (5). The cylinder body (1), the base plate (5), and the filter core tube plate installation ring (4) are composed into an integral whole through welding. The filter cores (2) and the filter core tube plate (3) are connected, and the connections are watertight. The filter core tube plate (3) and the filter core tube plate installation ring (4) are connected, and the connection is watertight. The number N of the filter cores arranged on the tube plate is no less then 2. The catcher provided by the invention is adopted in industrial water processing systems with high water processing capacities. With the catcher, equipment dimension and land occupation can be greatly reduced, equipment weight can be effectively reduced, and equipment manufacturing cost can be saved. A multi-core small-diameter filter core arrangement is adopted, such that the water processing filtering capacity of the equipment can be improved. With the small-diameter filter cores, reduced strength caused by increased diameter can be avoided.

The invention discloses a nickel steel bean production method, and belongs to the technical field of steelmaking. Chemical components of the nickel steel bean comprise: 20% of Ni, 0.15-0.3% of Si, 0.1% of C, 0.03% of S, 0.03% of P, and the balance of Fe. The nickel steel bean has an irregular bean shape. Production steps comprise: treating ore, preparing a reduction agent, carrying out calcination in a rotation kiln, smelting in a submerged arc furnace, carrying out refinement on the crudely-prepared ferronickel, forming, adopting laterite-nickel ore as a raw material, and adopting a nickel steel bean forming device and a cooling water tank to rapid form, wherein the nickel steel bean forming device can be statically fixed, and further can horizontally rotate, and a water temperature of the cooling water tank is controlled to a certain temperature range. According to the present invention, the components of the nickel steel bean can be accurately controlled, such that the Ni content is about 20%, and the Si content and the S content are low; the side surface outlet size of the nickel steel bean forming device can be adjusted so as to adjust the size of the nickel steel bean; the nickel steel bean has characteristics of small size and light weight; and the temperature of the cooling water tank is controlled so as to control the shape of the nickel steel bean shape.

The invention discloses a miniaturized blood irradiation device which comprises a blood cup, a plurality of radioactive sources, a plurality of radioactive source pipe racks, a radiation shielding cover and a box body. According to the blood irradiation device, a thin shielding system can be selected, so that the piece weight of the device is reduced, the device has better mobility, meanwhile, the energy consumption of the device is greatly reduced, the reliability, maintainability, replaceability, combination, integration and the like of the device are greatly improved compared with those of commercially available products, and the device can be used for medical treatment and public health departments and units which need to use irradiation blood in urban blood centers, surgical hospitals and field hospitals.

The invention discloses a high-voltage composite umbilical cable. The high-voltage composite umbilical cable comprises an inner-layer functional unit group, an outer-layer functional unit group and an outer sheath, wherein the inner-layer function unit group comprises three inner-layer medium-voltage cable units arranged in the center and an inner-layer filling steel pipe unit, and the outer-layer function unit group comprises four outer-layer steel pipe units. The four outer-layer steel pipe units divide the periphery of the outer-layer function unit into four installation areas, wherein an outer-layer medium-voltage cable unit, two low-voltage cable units, an outer-layer filling steel pipe unit and a filling body are arranged in three of the installation areas respectively. A steel strand unit, two low-voltage cable units, an outer layer filling steel pipe unit and a filling body are arranged in the other mounting area. According to the high-voltage composite umbilical cable and the manufacturing process thereof, the umbilical cable is high in tensile strength, light in weight and convenient to manufacture.

The invention relates to a manufacturing method of a cold drawn cylinder pipe for an industrial gas cylinder. A phi 194*5.5mm hot-rolled raw material tube of which the material is 30CrMo is washed with an acid, lubricated and drawn to a finished product of which the specification is phi 198*4.8mm at one time. In the method, the 30CrMo hot-rolled tube serves as the raw material tube. The industrial gas cylinder manufactured by cold drawing and a method of shrinking opening and bottom has the advantages of light unit weight, relatively large capacity, good comprehensive performance of the steel tube, safety and reliability. In the chemical components of the industrial gas cylinder manufactured by the method, the content of S, the content of P and the content of residual elements (Ni and Cu) are far less than the national standards, which is very favorable for guaranteeing the comprehensive performance of the gas cylinder significantly.

Provided are an elastic abrasive disc and a manufacturing process thereof. The elastic abrasive disc comprises a label layer, a supporting layer and a polishing layer, wherein the supporting layer islocated between the label layer and the polishing layer, the label layer, the supporting layer and the polishing layer are in the same shapes and are in circular ring shapes, mounting holes are formedin the centers of the label layer, the supporting layer and the polishing layer, and the label layer, the supporting layer and the polishing layer are solidified to be of an integrated structure by being heated in a die. The elastic abrasive disc and the manufacturing process have the beneficial effects that the manufacturing process is simple, the weight is low, the elastic abrasive disc cannotswing when being mounted on a tool, the safety performance is high, the elastic abrasive disc is degradable, high in grinding efficiency and high in self-sharpening performance, the use rate of abrasive cloth is high, the elastic abrasive disc is suitable for polishing of corners and gaps, the size is small, the package and transportation cost is low, the shape is smooth, wind resistance is small,and there is almost no noise at work.

The invention discloses a layered composite hard alloy drawing die for drawing metal wires, bars, pipes and section materials. The working area (reducing area) and sizing area of the drawing die comprise a tungsten carbide-based hard alloy layer, and the non-working area comprises a specially prepared matrix layer, the two layers are compounded by the powder metallurgic process which causes the interface between the two layers to transit continuously without defect. The use effect is the same as that of a monolayer homogeneous hard alloy drawing die, and the layered composite hard alloy drawing die can greatly save W and Co resources, reduce the cost of raw materials, and has the advantages of simple production implementation and high efficiency.

The invention relates to a casting mold of a shell mold. The casting mold comprises a main body mold plate with a combined mold cavity and a combined mold core fixedly clamped in the combined mold cavity. The combined mold cavity comprises a main mold core mold cavity, a water inlet mold cavity and a water outlet mold cavity; the main mold core mold cavity is positioned on one side of the main mold plate and extends inwards; the water inlet mold cavity is positioned on one side of the main mold core mold cavity and is communicated with the main mold core mold cavity; the water outlet mold cavity is positioned on the other side of the main mold core mold cavity, is opposite to the water inlet mold cavity and is communicated with the main mold core mold cavity; the combined mold core comprises a main mold core fixedly held in the main mold core mold cavity, a water inlet mold core fixedly held and inserted in the water inlet mold cavity and contacted with one side of the main mold core, and a water outlet mold core fixedly held and inserted in the water outlet mold cavity and contacted with the other side of the main mold core, and the combined mold cavity is an annular structure and is sealed in the main body mold plate; and the combined cavity further comprises a core groove which is arranged between the main core cavity and the water outlet cavity and is used for connecting and transitioning the main core cavity and the water outlet cavity, and the combined core further comprises an independent core arranged in the core groove.