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Visual symbols for operation instructions of metal cutting machine tools (7)
1. On/off switch
This symbol indicates the on/off switch of the CNC machining process. This symbol activates the machine’s digital components such as its spindle and table.
2. Direction control knob
The direction control knob is used to switch between clockwise and counterclockwise motion and is......
1067 
Gemma
Corrosion-resistant alloy rods (GB/T15008-1994)
Corrosion Resistant Alloy Rods
Many materials are subject to corrosion in a variety of environments. Corrosion is the breakdown of materials due to chemical and/or electrochemical reactions with their environment. In order to make materials resistant to these types of reactions, a variety of anti......
ASTM A29/A29M-1993 Standard Grain Size of Hot-Worked and Cold-Worked Carbon and Alloy Steel Bars
Abstract
This article aims to discuss the practices on grain size measurements of ASTM A29/A29M-1993 hot-processed and cold-processed carbon and alloy steel bars. The procedures for grain size measurements are thoroughly discussed, beginning from the selection of specimens, followed by the sample......
Nominal diameter range and shape of cold-rolled ribbed steel bars (GB 13788-2000)
Cold-rolled Ribbed Steel Bars
Cold-rolled ribbed steel bars are a type of building material that has been common in the construction industry for many years. Due to their strength and long-lasting durability, these bars are perfect for construction applications where high levels of strength and r......
GB 12827-91 standard reference acetylene carbon black and identification method
Carbon black refers to black powdery or granular material, which is composed of many tiny particles with the average particle size of between 10 and 2000 nanometers. It is composedot many carbon atoms buthydrophobic in nature. Carbon black can be prepared by pyrolysis of hydrocarbons such as coal ......
High-quality structural steel cold-drawn flat bar (YB/T 037-93)
High-quality structure steel cold-rolled flat steel (YB/T 037-93)
High-quality structure steel cold-rolled flat steel (YB/T 037-93) refers to a high quality forming and welding structural steel with a carbon content not exceeding 0.22% and a phosphorus content not exceeding 0.04%. It is mainly us......
China's current heat treatment standards
Introduction
Heat treatment is a process used in the manufacturing of metal products and components for the purpose of changing their physical and sometimes chemical properties. Heat treatment is used in a wide range of industries, including automotive, aviation, electrical and medical manufactu......
Niobium plate, strip and foil GB 3630-83
Introduction
Molybdenum plate, strip, and foil are pieces of molybdenum produced by rolling, forging, or drawing under high temperatures and pressures. They are used in a variety of applications, from aerospace engineering to industrial machinery and medical equipment. Molybdenum has many unique q......
Deformed iron-chromium-cobalt permanent magnet alloy (YB/T5261-1993)
Introduction
The Deformation FeCrCo Permanent Magnet Alloy, referred to here as FeCrCo PMA, is a new type of magnetic material based on the ferromagnetic properties of iron, cobalt, and chromium metals. It was developed by Tsinghua University and is currently the only such alloy available for com......
Deformed permanent magnet steel GB/T 14991-94 replaces GBn 174-82
Introduction
The GB/T 14991-94 replace GBn 174-82, is a new standard with improved characteristics and performance. The new standard requires an increased strength level that allows much less material to be used in order to achieve the same strength. This requires a greater focus on manufacturing......
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