China Glove Puppetry News
Calculation Formula The calculation formula for the selection of die-casting machine: Die-casting machine clamping force (t) = 1.4 * casting projected area * ratio of the projected area of the die casting-the orthographic projected area of the die casting * modulus (CM2). The tonnage of the die-casting machine is indicated by the clamping force of […]
It is very important for users to use indexable thread turning tool for threading in CNC lathes and machining centers. The correct and reasonable selection of thread cutting technology is very important. The thread cutting process depends on the structure of the machined parts and the CNC machine tool used. Generally speaking, using the right […]
Oval gears are widely used in automatic machinery and instrument industries, and are a type of non-circular gears. If strictly required, the elliptical gear can only be manufactured correctly on the CNC gear shaper, but the CNC gear shaper is very rare. In the case of small batches, the elliptical gear is fitted with 4 […]
The cylinder telescopic sheath is a protective component that is installed on the oil cylinder, cylinder, hydraulic cylinder, etc., and then expands and contracts with it. It has the characteristics of waterproof, dustproof, corrosion-resistant, high-temperature resistance, etc., and is widely used in the field of protection of various cylinders. Now I will explain the material […]
A large number of equipment such as CNC machine tools and machining centers are used in mold manufacturing. The manufacturing cycle is long. Operators are prone to fatigue. Once a failure occurs, it often takes a few seconds from human perception to take corresponding measures, which may lead to product scrap , Causing serious economic […]
The Wu Steel Works has two workshops, one steelmaking workshop and the second steelmaking workshop. The second steelmaking workshop produces ordinary steel, and the first steelmaking workshop mainly produces small batches of steel grades such as special steel. The production processes include hot metal pretreatment, converter, and RH. Degassing and continuous casting produce about 20 […]
As we all know, adding an appropriate amount of rare earth elements to steel materials will have a significant impact on the structure and performance of the material. Usually the rare earth elements in steel are added in 0.05%~0.20%. Because the ratio of the atomic radii of rare earth to iron far exceeds 15%, and […]
In the steelmaking process, after the converter smelting is completed, the molten steel is poured into the ladle through the converter tap; Various alloy materials need to be added during the tapping process to achieve precise adjustment of the composition of the molten steel; the alloy materials are generally introduced from the rotating chute to […]
Quenching oil is the most widely used cooling medium in the heat treatment quenching process for a long time. Although quenching oil has many unique cooling characteristics, it also has problems such as energy consumption, environmental pollution and fire hazards. First of all, the quenching oil consumed in the quenching process is a precious petroleum […]
1.1 Overview In 1958, H.F. Shroyer invented the technology of making metal castings with expandable foam plastic models and obtained a patent. The model used at first was made of polystyrene (EPS) board and molded with sand containing binder. The German companies Grunzweig and Harrtmann purchased this patent and developed and applied it. The technology […]
