What is a relay

A relay is an electrical control device that is an electrical device that causes a predetermined step change in the controlled output quantity in the electrical output circuit when the change in the input amount (excitation amount) reaches the specified requirement. It has an interaction betwe ...more...

The Challenges Faced by China's Ship Market and Counterm…

Due to the impact of the global financial crisis, the global shipping market has entered a new stage of adjustment. China's shipbuilding industry chain has gradually started a new transformation. In the past few years, China's domestic shipbuilding enterprises above the scale have continu ...more...

Welding material precautions

1. Stainless steel electrodes usually have two types: titanium calcium type and low hydrogen type. The welding current is as DC source as possible, which is good for overcoming the redness and shallowness of the welding rod. The electrode of titanium-calcium type coating is not suitable for al ...more...

Motor characteristics and application range

Features The motor is a reversible synchronous motor composed of a permanent magnet synchronous motor and a built-in reduction gear box. It has the advantages of large torque, low noise, small size, light weight, convenient use, constant speed operation, etc. It can also be matched with vario ...more...

Aluminum Alloy Extrusion Type Introduction

[China Aluminum Industry Network] I: positive extrusion (positive extrusion) The extrusion method in which the extrusion direction of the product is the same as the extrusion axis is called positive extrusion, as shown in Figure 1-2a. Positive extrusion is a more basic extrusion method, and it has ...more...

Intermediate relay

The characteristics of the intermediate relay: The relay is made up of a combination of high-quality sealed small relays with low coil voltage. It is moisture-proof, dust-proof, continuous, and has high reliability. It overcomes the shortcomings of the electromagnetic intermediate relay wires ...more...

Building materials to the countryside policy to seize the op…

China has a vast territory. At present, there is no brand in the building materials industry, and which company can have sales outlets in every county. There is still a long way to go in China's urbanization process. In the rural market, the sales volume of wardrobes is bound to increase. ...more...