Machining Surface Finish Chart Machining surface finish Machining surface finish is also called surface roughness. It refers to the small spacing and the unevenness of small peaks and valleys of the processed surface. The distance between its two crests or troughs is very small (below 1mm), which is a microscopic geometric shape error. The smaller […]
Detection Methods and Difficulties of Steel Castings Difficulties in detection 1. Poor ultrasound penetration Coarse grains, uneven structure and other complex interfaces enhance the scattering of ultrasonic waves. And the energy attenuation is large, so that the detectable thickness is smaller than that of forgings. 2. Many interference clutter When the sound wave is scattered […]
The pallet truck is the logistics handling equipment that transport goods. The development history of pallet trucks has experienced three generations, and is developing to the fourth generation. 1. Manual Pallet Jacks The first-generation pallet truck is a manual pallet truck. It is characterized by a low degree of automation and intelligence. However it has made […]
The manual pallet truck is undoubtedly a common handbarrow in modern logistics, which is found in factories of all sizes. It is also widely used in various industries such as postal services, airports, warehouses, workshops and supermarkets. In a modern society, the handling of materials is inseparable from manual pallet trucks. Thus the truck is […]
In the production process, foundry enterprises inevitably encounter casting defects such as shrinkage, bubbles, segregation, etc. This will result in low casting yield, and re-reflow production faces a lot of manpower and power consumption. How to reduce casting defects is a problem that has always been concerned by casting professionals. For the problem of reducing […]
History and development Plate heat exchangers appeared in the 1920s and mainly in the food industry. The heat exchanger made of plate instead of tube has compact structure and good heat transfer effect. Therefore, it has gradually developed into various forms. In the early 1930s, Sweden made the spiral plate heat exchanger for the first […]
The Cast iron was invented by the Chinese in the 4th century BC. China had begun to use blast furnaces to cast iron in at least the 4th century BC. Meanwhile Europe did not have such similar technology in the 7th century. The highly developed cast bronze during the Shang and Zhou dynasties provided the […]
The hydraulic system is the core of the manual hydraulic forklift. In that way, if there is a malfunction in daily use, how should we check and diagnose it. Today, I will introduce you to three basic methods. 1. Visual inspection method For some relatively simple faults, we can inspect parts by means of sight, […]
How to Choose, Install and Maintain Ductile Iron Pipe Firstly, let’s see why choose ductile iron pipe. In building construction, especially the construction of urban water supply pipeline network, the pipeline products used require high strength, high toughness, strong corrosion resistance and comprehensive cost of construction and installation. From these perspectives, ductile iron pipe is […]
Features and Process Application of Sand Casting Sand casting uses clay-bonded sand as a modeling material to produce castings. It is a process with a long history and most widely used. Sand casting has a long history, dating back thousands of years. In terms of its scope of application, sand casting is everywhere in the […]