10results about How to "Improve melting ability" patented technology

The invention discloses a production method for reducing slag runners in a spring steel square billet casting process, which specifically comprises the following steps: the superheat degree of continuous casting molten steel is 20-40 DEG C, slag is automatically added into a continuous casting square billet, and casting powder is conveyed into a crystallizer by taking compressed air as a carrier, so that a high-concentration compressed air atmosphere at an upper opening of the crystallizer is ensured, and the casting quality is improved. And a combustion-supporting effect is achieved on the casting powder, so that the melting effect of the casting powder is improved. And the insertion depth of the submersed nozzle is 70-80mm, so that the higher temperature of molten steel on the meniscus of the crystallizer is ensured, and the slag surface melting effect is improved. The slag line is not changed in the casting process; the crystallizer uses vibration parameters with high vibration frequency and high amplitude, so that the negative slippage time and the vibration advance amount of the crystallizer are improved, the inflow of liquid casting powder in an air gap between a steel billet and a copper pipe is facilitated, and the slag runner phenomenon in the casting process of the casting blank is avoided.

The utility model relates to the technical field of sulfur melting kettles, and provides an automatically controlled sulfur melting kettle, which comprises a kettle body with a cavity, a feed port, a separated liquid outlet, a circulating pipeline, a liquid inlet pipe, a liquid outlet pipe, a liquid outlet pipe, a liquid outlet pipe, a liquid outlet pipe, a liquid outlet pipe, a liquid outlet pipe, a liquid outlet pipe and a liquid outlet pipe, wherein the feed port and the separated liquid outlet are both communicated with the cavity and the separated liquid outlet is positioned on one side of the feed port; a pipe body of the circulating pipeline is positioned on the outer side of the top surface of the kettle body; the feeding pump is arranged on the circulating pipeline and is provided with a feeding end; one end of the feeding pipeline is communicated with the feeding hopper, and the other end is communicated with the feeding end. According to the technical scheme, the problems that the sulfur melting kettle in the prior art is low in recovery efficiency, large in pollution emission and not beneficial to improvement of environmental protection and production efficiency are solved.

The utility model relates to the field of marking planning devices with a stirring function, and discloses a marking planning device with a stirring function, which comprises a first main body, a second main body fixedly arranged at the upper end of the first main body, and a third main body fixedly arranged at the upper end of the second main body. A plurality of air pumps are fixedly arranged on the periphery of the inner side of the first main body, directional wheels are fixedly arranged at the lower ends of the air pumps, a fan is fixedly arranged at the lower end of the inner side of the first main body, a plurality of universal wheels are fixedly arranged at the lower end, away from the center, of the first main body, and a baffle is fixedly arranged at the lower end, close to the center, of the first main body. According to the marking device, more mechanisms can be conveniently installed on the main body, the fixed air pumps facilitate telescopic arrangement of the directional wheels at the lower end, the draught fans facilitate drying of marked lines, the universal wheels facilitate multidirectional movement of the mechanisms, and the baffles effectively protect the marking idler wheels.

The invention provides a smelting method of molten steel, and belongs to the field of smelting. Comprising the following steps: smelting molten iron in a converter to obtain first molten steel; converter tapping is conducted on the first molten steel, converter slag washing and converter alloying are conducted in the converter tapping process, low-gear bottom argon blowing is conducted, and second molten steel is obtained; the second molten steel is subjected to converter slag modification and high-grade bottom argon blowing, and third molten steel is obtained; and determining the refining process of the third molten steel according to the content relationship between the actual components and the theoretical components of the third molten steel to obtain the molten steel for low-carbon steel and peritectic steel. By optimizing a converter tapping process and an alloying process, the melting effect of the alloy and the carburant is improved; refining argon pre-blowing is moved forwards to the converter, so that the operations of station-arriving argon pre-blowing, station-arriving sample taking and station-arriving sample waiting can be directly canceled in the refining process, and alloying component adjustment is directly performed according to the components of the sample behind the converter. Therefore, the refining operation is greatly simplified, the refining treatment time is shortened, and the production efficiency is improved.

The invention relates to the technical field of crushing equipment, and particularly discloses a rubber asphalt preparation device which comprises a preparation cylinder with an inlet and an outlet, a heating plate arranged at the bottom in the preparation cylinder, and a preparation mechanism arranged in the preparation cylinder, the preparation mechanism comprises a rotating shaft, a screening plate, a discharging disc, a plurality of cutters arranged in the circumferential direction of the rotating shaft at equal intervals, a through hole formed in the discharging disc and a driving assembly used for driving the rotating shaft to rotate. The rotating shaft is rotationally connected with the preparation cylinder; the screening plate is connected with the preparation cylinder; the discharging disc is fixedly connected with the rotating shaft, located below the screening plate and attached to the screening plate. The cutter is fixedly connected with the rotating shaft and located above the screening plate. The problem that rubber asphalt cannot be quantitatively discharged through an existing preparation device is solved.

The invention discloses an arc plasma furnace with heat shielding and stirring functions, which comprises a furnace body and a furnace cover arranged at the top of the furnace body, a negative electrode with the lower end extending into the furnace body is arranged in the center of the furnace cover, a plasma torch generating device with the lower end extending into the furnace body is arranged on the furnace cover, and a feeding hole is formed in the furnace cover. A waste gas discharge outlet is formed in the upper portion of the furnace body, a molten liquid outlet and an iron outlet are formed in the lower portion of the furnace body, the iron outlet is lower than the molten liquid outlet, and a lower electromagnetic coil arranged around the center line of the furnace body is embedded in the bottom of the furnace body. The device is scientific in principle, compact in structure and high in safety, the combustion-supporting range completely covers the inner area of the furnace body, crusting is avoided, waste incineration is more sufficient, the combustion efficiency is high, the heat shielding and stirring functions are achieved after the electromagnetic coil is electrified, the material melting effect and efficiency are greatly improved, more energy is saved, and the production cost is reduced.

The present invention relates to the technical field of gold jewelry welding, and in particular to a welding device for gold jewelry processing, comprising a welding box, a box door is provided on the side of the welding box, a melting head is installed on the top of the welding box, a push-pull frame that can be pulled out is provided in the welding box, a shaking mechanism is provided in the push-pull frame, a melting bin is connected to the shaking mechanism, and a cooling mechanism is provided on the melting bin. Through the cooperation of components such as a universal joint, a connecting frame, a ball joint 1, a connecting rod 1, an electric rotating disk, a sliding block, a ball joint 2 and a connecting rod 2, the melting bin can be driven to shake 360 ​​degrees, so that the position of gold in the melting bin changes, ensuring that the gold can be evenly melted by the melting head, improving the melting effect and efficiency of gold, and effectively solving the problem of local overheating or insufficient melting at the edge during the gold melting process.

The invention relates to the technical field of gold jewelry fusion welding, in particular to a fusion welding device for gold jewelry processing, which comprises a fusion welding box, a box door arranged on the side surface of the fusion welding box, a melting head mounted at the top of the fusion welding box, a push-pull frame arranged in the fusion welding box and capable of being pulled out outwards, a shaking mechanism arranged in the push-pull frame, and a melting bin connected to the shaking mechanism, and a cooling mechanism is arranged on the melting bin. Through cooperation of a universal joint, a connecting frame, a first spherical hinge, a first connecting rod, an electric rotating disc, a sliding block, a second spherical hinge, a second connecting rod and other components, the melting bin can be driven to shake by 360 degrees, so that the position of gold in the melting bin is changed, it is guaranteed that the gold can be evenly subjected to melting operation of a melting head, and the melting efficiency is improved. And the gold melting effect and efficiency are improved, and the problem that in the gold melting process, local overheating occurs or the edge cannot be fully melted is effectively solved.

This utility model relates to the field of single crystal furnace heating technology, and in particular to an auxiliary heating device for a single crystal furnace. It includes a heating coil fitted inside the outer shell of the single crystal furnace, located above the crucible. The heating coil is composed of at least one layer of ring-shaped, nested tubes, spirally wound along the central axis to form a multi-layered, ring-shaped stack with a central cavity. This utility model enables heat to be uniformly transferred from multiple directions to the area above the crucible, avoiding localized overheating or undercooling. By changing the structure of the heating coil, the problem of uneven temperature distribution is solved. Compared to traditional heating components, it can heat the silicon material more efficiently and uniformly, improving the melting effect of the silicon material and the quality of single crystal growth.

The invention provides microcrystalline glass, a preparation method thereof and a glass product. The microcrystalline glass is prepared from the following components in percentage by mass: 54 percent to 68 percent of SiO2, 15 percent to 24.8 percent of Al2O3, 0.5 percent to 4.5 percent of Li2O, 0 to 1 percent of Na2O, 1 percent to 5 percent of MgO, 1 percent to 5 percent of ZnO, 0 to 1 percent of CaO, 0 to 3 percent of BaO, 0.5 percent to 4 percent of TiO2, 1 percent to 5 percent of ZrO2, 0.5 percent to 3 percent of P2O5 and 0.1 percent to 1 percent of La2O3. The components of the microcrystalline glass cooperate with each other in a specific ratio and have a synergistic effect, so that the microcrystalline glass with low thermal expansion coefficient, excellent mechanical properties and relatively high visible light transmittance can be prepared.