This technology is a type of cold forming, which is a processing method of punching, bending, stretching, etc. without heating. The cold forming process includes cold heading, cold rolling, die forging, and the like. The multi-station bolt cold heading machine introduces a forging method for formi

Gas relays are available in different types such as float type, baffle type, and open cup type. At present, most of the QJ-80 relays are used, the signal circuit is connected to the open cup, and the trip circuit is connected to the lower baffle. The so-called gas protection signal action means th

Abstract At present, wear-resistant castings have been widely used in mining, cement, electric power, road construction machinery and refractory materials. Abrasion-resistant castings are difficult to process due to irregularities in surface, uneven hardness, and a large amount of hard spots

Fig. A) Schematic representation of the synthesis of a two-dimensional gold single crystal using chloroauric acid and amyloid nanofibril; B) An optical micrograph of a two-dimensional gold single crystal; C) The front of a two-dimensional gold single crystal/polyurethane composi

Since the value of the temperature and humidity chamber is generally high, we recommend that it be placed in a relatively benign temperature environment. Our empirical temperature value is 8 ° C ~ 23 ° C. For laboratories not equipped with this condition, appropriate air conditioners ( Air c

The method of hammering a metal workpiece with a hammer is called boring. Also known as chiseling. The method of hammering a metal workpiece with a hammer is called boring. Also known as chiseling. Its scope of work is mainly to remove flanges, burrs, split materials, boring planes and oil groov

Some decoration companies are affiliated and contracted companies, and “wearing vests” are affiliated with famous enterprises. However, in the decoration contract, the terms such as “trusted agent” were deliberately omitted, and once the problem occurred, no one could b