3results about How to "Melted completely" patented technology

The utility model relates to the technical field of cable production extrusion molding devices, in particular to an extrusion molding device for power cable production, which comprises an extrusion molding cylinder, a heating layer, a protective shell, a storage tank, a discharge pipe, an extrusion molding auger, a driving motor, a driving shaft, an arc-shaped filter plate, a driven shaft, a crushing wheel, a driving gear, a driven gear and a transmission toothed chain, an extrusion packing auger is rotatably arranged in the extrusion barrel, a driving motor is fixedly arranged on the side wall of the protective shell, a driving shaft is arranged at the output end of the driving motor, an arc-shaped filter plate is fixedly arranged in the discharging pipe, a driven shaft is rotatably arranged in the discharging pipe, and a smashing wheel is fixedly arranged on the side wall of one end of the driven shaft; in the using process of the extrusion molding device for power cable production, the device not only can prevent plastic particles from being blocked in the discharging process, but also can improve the dissolving efficiency of the plastic particles, so that the plastic particles are melted more completely, and the extrusion molding device has the characteristics of high efficiency and stability.

The invention belongs to the technical field of metallurgical processes, and particularly relates to a tin hard head liquation refining process which comprises the following steps: step 1, adding solid tin hard heads into lead alloy liquid in batches, stirring, controlling the temperature of the lead alloy liquid to be 610-680 DEG C during stirring, stopping stirring after the tin hard heads are granular or powdery, and fishing out dross to obtain crude tin liquid; step 2, performing condensation to remove iron and arsenic; and step 3, removing iron and copper after arsenic is qualified. According to the method, the metal high-temperature liquation technology is adopted, the crude tin is separated out from the tin hard head, the process that in the traditional process, after crushing, the tin slag is matched for secondary furnace feeding is replaced, and the problems that in the traditional process, melting is difficult, the period is long, and the tin yield is low are solved.

The application provides a pre-stress insulator porcelain piece and a preparation method thereof, and belongs to the technical field of power equipment. The pre-stress insulator porcelain piece comprises the following components in percentage by weight: calcined industrial alumina 15-30%, quartz powder 5-15%, potassium feldspar 12-25%, and clay 30-60%. The pre-stress insulator porcelain piece has a density gradient in the inner and outer layers of the blank, which can essentially offset the tensile stress of the whole porcelain piece caused by the isostatic pressing and extrusion process, has excellent mechanical properties, and has important significance for meeting the demand of increasing the voltage grade of power transmission and transformation lines.