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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......
1034 
Erin
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......
Chuck
THE HISTORY OF EATING UTENSILS
One of the key elements of any civilization is the tools and utensils used by its people for the purpose of eating and food preparation. Eating utensils are usually the first tools invented by people, as the need for them is universally experienced. Not surprisingly......
Cupola
The Crucible
Written by Arthur Miller, the Crucible is a play set in the Salem village of Massachusetts in 1692. The play’s protagonist, John Procter, is a farmer who is accused, along with other townspeople, of trying to practice witchcraft. He finds himself in the midst of the Salem witch tria......
The development history of various grinding machines
The History of Grinding Machines
Grinding machines have been around for centuries and have been used in various industries for shaping, grinding and finishing various materials. They have evolved from manual labor to sophisticated machinery and are now used in many different industries for a vari......
Self-spraying oil recovery method
Self-Spray Oil Recovery Technology
Oil recovery technology is an important part of the oil and gas industry. With the development of the industry, more and more oil recovery technologies have been invented and put into practical use, such as self-spray oil recovery technology.
Self-spray oil rec......
1Cr17Mn6Ni5N use
AISI 430 (1Cr17Mn6Ni5N) stainless steel is a type of ferritic stainless steel developed for maximum corrosion and heat resistance. Like other ferritic alloys, AISI 430 has a high chromium content but is also balanced with low levels of carbon, so it does not become brittle at elevated temperatures......
Austenitic stainless steel S32161 1Cr18Ni11Ti chemical composition
Introduction
AISI 321/1Cr18Ni11Ti (UNS S32161) stainless steel, named by its chemical composition of 1Cr18Ni11Ti, is a titanium-stabilized austenitic stainless steel. It contains 18% chromium, 11% nickel and titanium as the stabilizing element. At a certain temperature range, the titanium can exp......
Use of CoCr28
CoCr28 Introduction
Cobalt-chromium-molybdenum alloy (CoCr28) is a nickel-free, cobalt-based alloy composed of 28% chromium, 4% molybdenum, and the balance cobalt. It is a material used in many applications as a biocompatible corrosion-resistant alloy. It is also known as an orthopedic or surgic......
The grade and chemical composition of high speed steel in my country
High-speed steel is a tool material which refers to steels that are able to maintain good hardness and high wear resistance at temperatures up to five times higher than those of the high carbon tool steels. It was invented in 1912 and has seen much development since then. Its main applications inc......
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