Search results for keyword: estimation
Briefly explain the calculation of bearing life
The Calculation of Bearing Life
In order to accurately calculate the life span of bearing, one must first understand what a bearing is and what forces can cause it to wear out prematurely. A bearing is a device which supports and locates a rotating shaft in a predetermined position in relation t......
1034 
Sophia
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......
GB 12801-91 General Principles of Safety and Sanitation Requirements for Production Process
12801-91 Production Process Safety and Health Requirements General Provisions
This standard specifies the requirements and regulations of the production process safety and health in order to prevent and reduce occupational accidents, injuries and diseases. The objective of this standard is to ens......
GB/T 13201--91 Technical Method for Establishing Local Air Pollutant Emission Standards
GB/T 13201--91 Technical Method for Establishing Local Atmospheric Pollutant Emission Standards
This paper focuses on the technical method formulated in the standard of GB/T 13201--91, designed to establish local atmospheric pollutant emission standards. This standard specifies the steps and proc......
American ferrous metal designation method
美国黑色金属的牌号表示方法
美国的钢铁行业使用一种称为牌号的编码系统来对黑色金属进行划分和分类，牌号具体分类包括了部分可融入钢的非金属元素以及钢的化学和机械特性等。牌号可以是一位数，也可能是两位数，在美国注册的钢铁行业协会（AISI）以及它的商业伙伴们都可以针对黑色金属所列出的牌号规范。
AISI概述
AI......
Brief introduction to the representation method of metal material grades in China (GB)
Introduction
China has a unique system of numbering and coding a wide range of metallic materials, called Chinese Standard (GB) Metal Materials Numbering System (in Chinese “gong bu”). Generally, it is a four-digit designations for classifying and determining basic Metal materials.
The Purpose......
Mechanical Design Terminology
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Mechanical Design Terminology
Mechanical design is an integral part of most industries today. Many sectors rely on mechanical design for their products and services. As such, it is important for professionals in the industry to understand the terminology used in the field. Mechanical de......
Sample representativeness
Mineral Sample Representativeness
The importance of mineral sample representativeness is often overlooked in exploration geology and mining. Presented in this paper is an in-depth review of the importance of mineral sample representativeness, its range of applications and the various methods for ......
Determination of mineral content
Mineral Content Determination
Minerals are some of the most crucial elements that contribute to the maintenance of the ecosystems and human health. Mineral content determination is defined as the process of measuring the amounts of essential minerals present in a specimen. This analysis is perfor......
Mineral Particle Size Determination
Mineral Grain Size Measurement
In science, mineral grain size measurement is a recurring theme in the characterization of rocks and soils. It has a wide range of applications, from volcanic classification to slope stability evaluation. As such, different grain size measurement methods have been d......
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