1, the butterfly valve before installation to confirm product performance and flow direction of the arrow is consistent with the movement conditions, and the valve cavity clean, does not allow the seals and disc with foreign particles attached, not clean before the butterfly Plate, so as not to dama

What to do if the salt spray test box is abnormal 1. The salt spray test box cannot rise to the set temperature 1, laboratory temperature controller temperature, set too low 2, the laboratory safety switch is set too low 3, heating system failure 4, electromagnetic relay failure 5, controller

Layout cleaning refers to the process of scrubbing the plate after positioning and positioning. The face milling machine is also referred to as open plate. Its purpose is mainly to improve the activity of the layout, enhance the water absorption of the blank parts and the ink receptivity o

The Jiangsu Provincial Economic and Information Committee recently organized experts to carry out Jiangsu provincial-level new product appraisal for the 200J541M-600LB internally-balanced oxygen globe valve independently researched and developed by Jiangsu Yihua Group Co., Ltd., from Sinopec, PetroC

There is a jet engine, a rocket booster and an ultra-durable aluminum tire. This is the "Detective Canine" Supersonic Vehicle (SSC), which is planned to land on land at a speed of 1,000 miles per hour. Its design idea is as fast as possi

At present, 60%-80% of parts and components in electronics, automobiles, motors, electrical appliances, instruments, meters, home appliances, telecommunications, and military products all rely on molding. The quality, efficiency, and development capabilities of the product are largely dete

Since the 18th National Congress, economic transformation and upgrading has become a top priority, and emerging industries are undoubtedly the vanguard of transformation and upgrading. In particular, small and medium-sized enterprises and GEM companies that have already listed have opened up the M&a

Body noise It is caused by normal perennial use, and is caused by the relaxation of certain parts. At the same time, noise is related to speed. This is a resonance problem. Other non-listed noises need to be noticed and eliminated in time, such as noise in

On the morning of the 22nd, Li Xiaosong, member of the Beijing Municipal Committee of the Chinese People's Political Consultative Conference and deputy director of the Municipal Communications Commission, spoke at the group meeting about the issue of admission to special vehicles. She believes

Brief introduction of power station valve "Power station valve" is also called special valve of power station, which is mainly applied to the piping of various systems in thermal power station to cut off or connect the pipeline medium. Applicable medium: water, steam and other non-corrosiv

Industrial production grows steadily In May, the industrial added value above designated size increased by 13.3% year-on-year, and the growth rate dropped by 0.1% from April. From January to May, the value-added of industrial enterprises above designated size increased by 14.0% year-on-year, and

The purpose of cleaning the public hatchback vehicle is to clean all the stains on the vehicle body. Simply flushing with clean water is not a cleaning effect. Although it is so easy and simple to see a car wash, cleaning stains for public car hatchbacks is