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GB/T 3222-94 Acoustic Environmental Noise Measurement Method
，内容是GB/T 3222-94声学 环境噪声测量方法
In 1994, GB/T 3222 was released by the China National Standards on Acoustics to provide a standard method to measure sound levels in the environment. The standard was developed to meet the needs of new acoustic construction regulations in China and to reduc......
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GB12358-90 General technical requirements for gas detection and alarm devices in the working environment
Technical Requirements of General Gas Detection Alarms in GB12358-90 Workplace Environment
The main purpose of this technical requirement is to standardize the requirements of general gas detection alarms used in the workplace environment, to ensure the safety of staff and the safety of workplace......
K352 core removal machine operating procedures
K352CXJ Operation Procedure
This document provides an overview of the operation procedure when using this K352CXJ machine. Familiarity with this machine and its features will help ensure efficient and safe operation of it.
1. Preparing for Operation
Before the machine is started, the operator m......
shifting mechanism
Variable Speed Control Mechanisms
Speed control mechanisms allow an engineer or technician to adjust the speed of mechanical systems like pumps and motors. There are several types of variable speed control mechanisms that can be utilized by engineers depending on the application and the specific ......
Characteristic Causes of Residual Shrinkage Cavity and Its Judgment and Treatment
Introduction
Remaining shrinkage hole is a common defect in castings, caused by a number of possible factors related to the manufacturing process. This paper attempts to thoroughly review the causes and prevention of remaining shrinkage hole defects in investment castings, and to discuss various ......
Advantages of ultra-high speed grinding
The Superiority of Super High-Speed Grinding
Grinding is a common machining process which uses an abrasive to wear away surface material at high speed, resulting in the attainment of a desired shape and surface finish. Super high speed grinding is a machining technology which uses high speed abra......
Ultrasonic processing
Ultrasonic Processing
Ultrasonic processing is one of the most common and widely used industrial processing methods in todays world. It is used in many different applications and industries, ranging from medical applications to automotive and aerospace industries. Ultrasonic processing provides a......
Processing characteristics of superabrasive abrasives
The Processing Characteristics of Super Hard Abrasive Tools
Super hard abrasive tools are popular among customers in recent years. Their excellent cutting performance and reliable guidance make them popular in the machining production industry. As a newly emerging abrasive tool, the quality and c......
The new technology of pressing dust, mud and iron oxide into balls has a good emission reduction effect
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The Benefits of the New Iron-Oxide-Compressed Dust-Clay Ball Technology in Achieving Carbon Emission Reduction
The global proliferation of carbon emissions has become an issue of increasing concern. As the world moves towards a low-carbon economy, reducing carbon emissions has become fundamenta......
Form rolling
Cold rolling is a steel forming process in which a metal bar is passed through a pair of rolls to reduce the thickness, increase the yield strength and increase the hardness of the metal bar. This type of metal forming process involves passing the metal bar between two rolls that rotate in opposit......
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