One Question per Day 20190610
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This post was last edited by wawa*n*ntaozi on 2019-6-12 00:13. To boost activity in the section on mechanical equipment, a daily quiz thread has been created; all questions are taken from a document I possess titled \"Questions and Answers on Industrial Steam Turbine Equipment and Operation Techniques\", published by Sinopec Press； Those who have the relevant information can consult it. These questions are not meant to test anyone; rather, they are there for us to learn together and make progress together through the HaiChuan platform and this series of posts. It’s normal for some questions to have answers that other users find controversial ； But for this post, I can only rely on the answers from books; I hope fellow netizens are aware of this. Question: What properties does a metal material possess? Answer: The properties of metal materials include service properties and processing properties. Today I checked the replies from other users, and they were much more comprehensive, objective, and practical than the answers in the books. Following @BOSS’s suggestion, no answers will be provided for this post; users are free to share their own opinions. Your reply may differ from those in the books, but that doesn’t necessarily mean it’s incorrect, as the replies from other users are closer to real-world applications. The answers will be announced the next day; active participants will receive a reward of 5 points, and all replies after the announcement will also be valued at 5 points. Those who answer correctly or come close receive scores ranging from 8 to 15 points. We hope that all forum members will actively participate to support the development of the forum. Chemical Equipment and Machinery
The main properties of metal materials include: I. Physical properties 1. Density 2. Melting point 3. Thermal expansion 4. Thermal conductivity 5. Electrical conductivity 6. Magnetism II. Chemical properties 1. Corrosion resistance 2. Oxidation resistance 3. Chemical stability III. Mechanical properties 1. Strength 2. Elasticity and stiffness 3. Plasticity 4. Hardness 5. Toughness 6. Fatigue IV. Processability 1. Castability 2. Formability by forging 3. Weldability 4. Machinability 5. Workability in heat treatment
Physical properties: density, melting point, thermal expansion, thermal conductivity, electrical conductivity, magnetism. Chemical properties: corrosion resistance, chemical stability. Mechanical properties: strength, ductility, hardness, fatigue strength, etc
It is recommended to publish a daily question using the template for static equipment and pump equipment [Daily Question]. The title prefix is [Mechanical Equipment Technology Exchange Version], and replies are only visible to the author. No answer is required. :handshake
I. Physical properties (specific gravity, melting point, thermal conductivity, hardness, electrical conductivity, magnetism, etc.)； II. Chemical properties (corrosion resistance, oxidation resistance, etc.) ； III. Machinability (casting properties, forging properties, cutting properties, welding properties, etc.).
Physics: density, melting point, thermal expansion, thermal conductivity, electrical conductivity, magnetism. Chemistry: corrosion resistance, chemical stability. Mechanics: strength, ductility, hardness, fatigue strength, etc
I. Physical properties (specific gravity, melting point, thermal conductivity, hardness, electrical conductivity, magnetism, etc.)； II. Chemical properties (corrosion resistance, oxidation resistance, etc.) ； III. Machinability (casting properties, forging properties, cutting properties, welding properties, etc.).
Main properties of metal materials (I) Mechanical properties of metal materials 1. Elasticity and plasticity: The property whereby metal materials deform under the action of external forces and can return to their original state once the forces are removed is called elasticity. 2. Stiffness: The ability of a metal material to resist elastic deformation when subjected to forces is called stiffness. 3. Strength: The ability of a metal material to resist plastic deformation and fracture under external forces is called strength. Strengths include tensile strength, compressive strength, bending strength, shear strength, and torsional strength. 4. Hardness: The ability of a metal material to resist the pressure from harder objects is called hardness. 5. Impact toughness: The ability of a metal material to resist fracture under the action of impact loads is called impact toughness. 6. Fatigue strength: The maximum stress that a metal material can withstand under numerous repeated or alternating loads without fracturing is known as fatigue strength. (II) Physical, chemical, and mechanical properties of metal materials 1. Physical properties The main physical properties of metal materials include density, melting point, thermal expansion, thermal conductivity, and electrical conductivity. 2. Chemical properties: The main chemical properties of metal materials include acid resistance, alkali resistance, oxidation resistance, etc. 3. Processability: Processability is a combination of physical, chemical, and mechanical properties. Depending on the processing method, it is classified into castability, malleability, weldability, and machinability, etc.
The main properties of metal materials include: I. Physical properties 1. Density 2. Melting point 3. Thermal expansion 4. Thermal conductivity 5. Electrical conductivity 6. Magnetism II. Chemical properties 1. Corrosion resistance 2. Oxidation resistance 3. Chemical stability III. Mechanical properties 1. Strength 2. Elasticity and stiffness 3. Plasticity 4. Hardness 5. Toughness 6. Fatigue IV. Processability 1. Castability 2. Formability by forging 3. Weldability 4. Machinability 5. Workability in heat treatment
The main properties include: I. Physical properties 1. Density 2. Melting point 3. Thermal expansion 4. Thermal conductivity 5. Electrical conductivity 6. Magnetism II. Chemical properties 1. Corrosion resistance 2. Oxidation resistance 3. Chemical stability III. Mechanical properties 1. Strength 2. Elasticity and stiffness 3. Plasticity 4. Hardness 5. Toughness 6. Fatigue IV. Process properties 1. Castability 2. Formability by forging 3. Weldability 4. Machinability 5. Suitability for heat treatment.
I. Physical properties (specific gravity, melting point, thermal conductivity, hardness, electrical conductivity, magnetism, etc.)； II. Chemical properties (corrosion resistance, oxidation resistance, etc.) ； III. Machinability (casting properties, forging properties, cutting properties, welding properties, etc.).