Technical Information
Technical Information
We would like to introduce our technical information.
31～60 item / All 65 items
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The relationship between the microstructural changes of steel due to annealing and hardness.
[Reproduction of Private Spring Preparatory School Lecture 31] Explaining how tempered martensite changes through tempering!
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Detailed explanation of dimensional changes due to quenching and tempering, and heat treatment techniques.
[Reproduction of Private Spring Preparatory School Lecture 32] Explanation of the relationship between temperature and elongation when heated slowly and cooled slowly!
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Causes of defects due to heat treatment and preventive measures: countermeasures for overheating, quenching, and cracking.
[Reprint Private Spring Preparatory School Lecture 33] What you need to be careful about is overheating! An introduction to defects that are likely to occur during heat treatment.
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Introduction to types of spring steel wire, their applications, and the production process.
[Reproduction of Private Spring Preparatory School Lecture 34] Introduction to soft steel wire, hard steel wire, piano wire, and welding rod core wire!
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Detailed explanation of types of steel wire and JIS standards.
[Reproduction of Private Spring Preparatory School Lecture 35] Introduction to the JIS numbers, symbols, and chemical components (only carbon and manganese content) of three types of wire materials!
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Differences in types of spring steel wire and manufacturing processes.
[Reprint Private Spring Preparatory School Lecture 36] An explanation of the differences between the brothers of spring steel wire and their growth processes!
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Characteristics of the manufacturing process and heat treatment of spring steel wire, and the importance of quality control.
[Reproduction of Private Spring Preparatory School Lecture 37] Introduction to unique heat treatments such as patenting, acid pickling, wire drawing, and oil tempering!
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The relationship between the quality and surface defects of spring steel wire and its price.
[Reproduction Private Spring Preparatory School Lecture 38] Make sure to check that there are differences in price depending on the type of line and the line diameter!
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Quality and tensile strength of spring steel wire and changes in coil diameter.
[Reproduction of Private Spring Preparatory School Lecture 39] An explanation of how the tensile strength of spring steel wire significantly affects coiling!
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The purpose and effects of low-temperature annealing of wire springs, and the importance of the manufacturing process.
[Reproduction of Private Spring Preparatory School Lecture 40] Explanation of the changes in mechanical properties due to low-temperature annealing of piano wire and oil-tempered wire!
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The difference between coloring steel wire through low-temperature annealing and bluing, and their purposes.
[Reproduction of Private Spring Preparatory School Lecture 41] Low-temperature annealing is commonly referred to as bluing! The blue color is the color of the iron oxide film formed on the surface of the steel.
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Quality degradation due to grinding of the spring end face and heat generation, and points to note.
[Reproduction of Private Spring Preparatory School Lecture 42] Thin wire springs, thick wire springs! An explanation of the issues of end face grinding and shot peening for both.
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Improvement of fatigue resistance of springs by shot peening and precautions during processing.
[Reproduction of Private Spring Preparatory School Lecture 43] Fine matte texture on airplane parts! Explanation of shot peening.
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Principles, Effects, and Practical Methods of Shot Peening and Setting
[Reproduction of Private Spring Preparatory School Lecture 44] Shot peening is a surface treatment! Explanation of the final process setting as well.
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A comprehensive summary of the causes of wire spring damage and preventive measures.
[Reproduction of Private Spring Preparatory School Lecture 45] The usable temperatures of various steel wires and JIS related to wire springs are also included in the table!
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The Flower Preparatory School Festival: Lessons Hidden in the Songs Unraveled by the Folk Song Club
[Reproduction of Private Spring Preparatory School Lecture 46] Introducing songs about mainsprings, songs that encourage quality control, and songs related to painting and spring surfaces!
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Exploring the Relationship Between Bamboo and Elasticity—The Secrets of Resilience Rooted in Japanese Culture
[Reproduction of Private Spring Preparatory School Lecture 47] The inseparable relationship between bamboo and springs! An explanation of how it utilizes elasticity.
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A Satirical and Humorous Senryu of Prep School Students Seen Through Springs and Peening
[Reprint Private Spring Preparatory School Lecture 48] Introducing a short poem consisting of three lines of 5-7-5 syllables, primarily focusing on humor and satire!
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Exploring the relationship between fishing and springs: Research for the school festival and the fun of the Japanese language.
[Reproduction of Private Spring Preparatory School Lecture 49] Fishing rods are similar to springs in that they utilize the elasticity of bamboo, that is, the force of rebound!
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The selection and importance of metal materials for springs learned with the arrival of spring.
[Reproduction of Private Spring Preparatory School Lecture 50] Studying metal materials for springs! I will explain the types of steel most commonly used for springs.
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Detailed explanation of the types, uses, and characteristics of spring steel, along with applications in practice.
[Reproduction of Private Spring Preparatory School Lecture 51] There are two main methods to give spring strength! Explanation of JIS spring steel.
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The relationship between spring stiffness and strength, an important point in design.
[Reproduction of Private Spring Preparatory School Lecture 52] Exploring specific examples of spring stiffness! We will also explain the limitations of using a spring scale.
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The composition and structure of spring steel, the changes in strength due to carbon content, and the importance of quenching.
[Reproduction of Private Spring Preparatory School Lecture 53] Study of heat treatment that creates spring hardness! Explanation of carbon that strengthens steel.
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Changes in the structure of steel due to quenching and the hardening mechanism, the influence of carbon content, and its applications.
[Reproduction of Private Spring Preparatory School Lecture 54] Changes When Hardening is Done! Explanation of Carbon Content and Hardness from Hardening.
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Understanding the hardness changes of spring steel through quenching experiments and cooling rates.
[Reproduction of Private Spring Preparatory School Lecture 55] The harder the quenching, the greater the hardness! It also explains that there are differences in hardenability depending on the type of steel.
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Causes of hardening properties and tempering variations in spring steel and their effects.
[Reproduction Private Spring Preparatory School Lecture 56] There are also restrictions on the components of special elements! The composition of JIS spring steel is also determined by this.
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The causes of burning defects and the impact of decarburization on the fatigue strength of spring steel.
[Reprint Private Spring Preparatory School Lecture 57] Burn marks can occur due to uneven quenching temperatures, uneven cooling, and the presence of scale!
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Effects and countermeasures of crystal grain growth, surface oxidation, and reduction of fatigue strength in spring steel due to overheating.
[Reproduction of Private Spring Preparatory School Lecture 58] As the grain size increases, the resistance to impact decreases, and the fatigue strength also diminishes!
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Method for determining the organizational changes in steel due to re-annealing and the depth of quenching.
[Reproduction of Private Spring Preparatory School Lecture 59] Explanation of reversion! Also explaining martensite structure and changes in structure.
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Points to note during heat treatment and grinding of high-grade springs and causes of strain generation.
Reproduction of Private Spring Preparatory School Lecture 60: Sometimes the spring surface may soften due to grinding heat, leading to breakage!
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