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GB 608-88 Chemical Reagents - General Method for Determination of Nitrogen
GB 608-88 Chemical Reagents-General Method for Nitrogen Determination
GB 608-88 Chemical Reagents-General Method for Nitrogen Determination is a standard that sets the methods and requirements for chemical reagents used in determination of nitrogen in a wide range of applications, including the d......
1061 
Natalie
GB/T 8984.2-1997 Determination of total content of carbon monoxide, carbon dioxide and hydrocarbons in gases Gas chromatography
GB/T 8984.2-1997 Determination of Total Content of Carbon Monoxide, Carbon Dioxide and Hydrocarbons by Gas Chromatography
This standard specifies the determination of total content of carbon monoxide, carbon dioxide, and hydrocarbons in gases by gas chromatography, and provides guidance for princ......
GB/T3781.7-93 Determination of iodine absorption value of acetylene carbon black
Determination of Iodine Adsorption Value of Acetylene Carbon Black
Acetylene carbon black is a special type of carbon black manufactured by the burning of acetylene gas in abnormally oxygen-deficient atmosphere. Carbon black can be used as a reinforcing filler for rubber, plastics and other produ......
General technical requirements for iron valves for urban water supply
General Requirements for Iron valves Used for Water Supply in Urban Water Supply
1. General
1.1 Iron valves used for water supply in urban water supply are divided into low-voltage valve core, butterfly valve core and other valve cores according to their structures. Among them, the butterfly val......
Technical parameters of milling machine without lifting table
Fixed-workbench Not-updown Milling Machine
Fixed-workbench not-updown milling machines are designed for milling medium, small and large parts without changing the fixture position on the workbench. The working table remains in a fixed position, and the cutter and the workpiece move relative to ea......
Hobbing machine (vertical) technical parameters
Rolling Mill (Vertical) Technical Parameters
The Rolling Mill (Vertical) is a mechanical press designed for industrial use in forming products. It features a single motor drive, compact construction, and versatility. It is ideal for production shops that are looking for a reliable and easy to use......
Car wheel bearing maintenance
Maintenance of Automotive Wheel Bearings
Automotive wheel bearings are used as a key component in the suspension and steering systems of modern cars companies. They provide vital support, allowing the wheel to rotate freely in the proper alignment and ensuring that it remains in place when expose......
Effect of overheating on the mechanical properties of 18Cr2Ni4WA steel during forging
Effects of Overheating on Mechanical Properties of 18Cr2Ni4WA Steel during Forging
Abstract
This paper explores the effects of overheating on the mechanical properties of 18Cr2Ni4WA steel during forging. Experiments have shown that the heating temperature of 18Cr2Ni4WA steel has a significant in......
Residual element content (mass fraction) of American standard alloy cast steel and stainless cast steel for high temperature (≤%)
Element Steel Type
C
Alloy Steel 0.30-0.55
Stainless Steel 0.03max
Mn
Alloy Steel 1.00-1.65
Stainless Steel 2.00max
P
Alloy Steel 0.04max
Stainless Steel 0.045max
S
Alloy Steel 0.05max
Stainless Steel 0.03
Si
Alloy Steel 0.15-0.40
Stainless Steel 1.00max
Cr
Alloy Steel 0.90-1.20
Stainless S......
The relationship between the commonly used time-delayed core-pulling stroke in die-casting die casting and the required increase in the oblique hole of the slider δ
Abstract
Plunging hot molds are commonly used in casting processes. It is necessary to obtain an accurate estimate of the climb-out path the mold must travel in order to achieve good casting quality. In order to achieve good mold positioning accuracy and reducing energy expenditure, a delay of th......
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