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Flat ruler
Fashion, Functions and Fads: The Constant Change of Popular Culture
Popular culture has made quite a significant impact on our lives and has become an inseparable part of modern society. Much of what we enjoy, wear, dare to do and want has become heavily influenced by the mainstream media and ind......
1029 
Liam
bronze smelting technique in ancient China
Bronze Smelting Technique in Ancient China
Bronze smelting was one of the great achievements of ancient China. Between the 16th and 11th centuries bc, the art of bronze smelting was perfected. In this process, the ore was heated to a high temperature, resulting in an alloy of copper and tin tha......
Screw press
Screw press
A Screw Press is a mechanical device that uses a rotating screw to extract liquid from solids. It is also known as a helical screw press or an Archimedes screw press. This type of press was originally invented by Archimedes in the third century bc.
A modern screw press typically cons......
heat treatment of metals in ancient China
Heat Treatment of Metals in Ancient China
The history of heat treatment of metals in China dates back to the Shang Dynasty (1600-1046 bcE). This early heat treatment was used to soften and harden bronze utensils and weapons such as knives and spearheads, by heating and cooling in a process that i......
A Review of Brazing (Part 1)
Introduction to Brazing
Brazing is a widely used method for joining two pieces of metal together, usually with a filler metal, such as copper, brass, bronze, or aluminum. The brazing process is fairly simple, as it involves heating the pieces of metal with a torch or other heat source and then in......
Specific application of melt booster metering gear pump in extrusion production line
Application of Melt Pressure Metering Gear Pump in Extrusion Production Line
In plastic extrusion production line, melt pressure metering gear pump is a very important component. In the precision extrusion production process, the melt pressure metering gear pump is used to finely and accurately c......
The model and technical parameters of the horizontal workshop
Single Layer Assembly Workshop
1 Introduction:
The single layer assembly workshop refers to the workshop in which the components are vertically stacked and assembled one after another in accordance with the technological process, and can be regarded as a type of categorical arrangement. This pap......
Turning
Turning
Turning is a machining process in which a cutting tool, typically a non-rotary tool bit, describes a helical toolpath by moving more or less linearly while the workpiece rotates. The tools axes of movement may be literally a linear axis, but they can also be combined into more complex mot......
Japanese steel scrap classification standard (Jis G2401)
Japan Iron and Steel Scrap Classification Standard (JIS G2401)
Japan Iron and Steel Scrap Classification Standard (JIS G2401) was established to classify the scrap steel product used in iron and steel production. According to the standard, the scrap steel products should be divided into three main......
Ferrochrome nitride (YB/T5140-1993)
：
Chromium nitride iron, also known as compound ferritic nitride (Cr + Fe3N), is a high-performance, wear-resistant material developed in the late 20th century. Its wear-resistant performance is about three times higher than that of a high-speed steel cutting tool, and its mechanical properties a......
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