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Can't ask now! 'Spring Trivia' *Materials provided

Can't ask now! 'Spring Trivia' *Materials provided

This book compiles spring trivia taught by "Nishikawa Spring," which has been involved in the design, manufacturing, and sales of springs for over 40 years.

We are introducing some little-known facts about springs that you may be hesitant to ask about now. Our company offers product processing tailored to our customers' needs. If you have any issues with springs, please feel free to consult us. 【Contents (excerpt)】 ■ Fact 1: Changes in coil diameter due to heat treatment (by material) ■ Fact 2: Common materials often used for springs ■ Fact 3: Types of stainless steel wire for springs ■ Fact 4: Types of oil-tempered wire *For more details, please refer to the PDF document or feel free to contact us.

  • Spring
  • Processing Contract

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Introduction of custom-made springs for various automotive parts and machinery.

Introduction of custom-made springs for various automotive parts and machinery.

No problem if you don't have a blueprint! We will create a one-of-a-kind spring from the design.

Our springs are used in various automotive parts and automotive machinery. Even without drawings, we can assist you from the design stage, so please feel free to contact us. ★If you would like a sample, please feel free to consult us through the <inquiry form>. *For more details, please download the PDF or feel free to contact us.

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Spring News April Issue" includes trivia about springs: "About Spring Index.

Spring News April Issue" includes trivia about springs: "About Spring Index.

April issue of the Spring News delivered every month! We introduce the spring index (D/d).

The spring index (D/d) is the value of the coil's average diameter divided by the wire diameter. While there are other factors that affect ease of manufacturing, it is generally considered that this value should be between 4 and 20, with 7 to 13 being particularly suitable for spring production. Although a spring index of 4 to 20 is desirable, it is not an absolute requirement to stay within this range. However, producing springs outside of this range can be very difficult or even impossible, so it is advisable to keep it within this range as much as possible. Please leave the design, estimation, and production of various springs to us. *For more details, please refer to the PDF document or feel free to contact us.*

  • Spring

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Spring News June Issue" includes a trivia about springs: "What is the effective number of coils?

Spring News June Issue" includes a trivia about springs: "What is the effective number of coils?

The June issue of the Spring News delivered every month! It is considered good to have a valid number of volumes of 3 or more.

The effective number of coils refers to the portion of the coil that acts as a spring, calculated by subtracting the number of end coils from the total number of coils in a compression spring. Generally, end coils are often one coil each at both ends, so in that case, the effective number of coils is total coils minus 2. If the first coil and the last coil do not contact the next (previous) coil, and the ground portion is 3/4 of a coil, the effective number of coils becomes total coils minus 1.5. It is considered good practice to have an effective number of coils of 3 or more. For tension springs, the total number of coils equals the effective number of coils (excluding the hook sections). Please leave the design, estimation, and production of various springs to us. *For more details, please refer to the PDF materials or feel free to contact us.*

  • Spring

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Presenting the basic knowledge of springs that you can’t ask about now! *New equipment introduced to increase productivity.

Presenting the basic knowledge of springs that you can’t ask about now! *New equipment introduced to increase productivity.

Updating the compression coil springs and the equipment of the heat treatment device! Additionally, we are also offering trivia about springs taught by "Nishikawa Spring," which has been involved in springs for over 50 years!

To provide better products, we have updated our coiling machine and heat treatment equipment! <Details> Coiling Machine: Shinko Machine Industry Co., Ltd. Automatic Heat Treatment Equipment: Sankyo Co., Ltd. Additionally, we are offering "Spring Trivia" taught by Nishikawa Spring, which has been involved in spring manufacturing for about 50 years. Our company accepts product processing tailored to customer requests. If you have any issues with springs, please feel free to consult us. 【Published Content (Excerpt)】 ■ Trivia 1: Changes in coil diameter due to heat treatment (by material) ■ Trivia 2: Commonly used materials for springs ■ Trivia 3: Types of stainless steel wire for springs ■ Trivia 4: Types of oil-tempered wire *For more details, please refer to the PDF document or feel free to contact us.

  • Spring
  • Processing Contract

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Introduction of custom-made springs for agricultural machinery and tools.

Introduction of custom-made springs for agricultural machinery and tools.

No problem if you don't have a blueprint! We will create a one-of-a-kind spring from the design.

Our springs are used in some agricultural machinery and tools. Even without drawings, we can assist you from the design stage, so please feel free to contact us first. ★ If you would like a sample, please feel free to consult us through the <inquiry form>. * For more details, please download the PDF or feel free to contact us.

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Introduction to Custom-Made Springs for Residential Building Materials

Introduction to Custom-Made Springs for Residential Building Materials

No problem if you don't have a blueprint! We will create a one-of-a-kind spring from the design.

Our springs are being incorporated into some residential building materials. Even without drawings, we can assist you from the design stage, so please feel free to contact us. ★ If you would like a sample, please feel free to consult us through the <contact form>. * For more details, please download the PDF or feel free to contact us.

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[Spring News August Issue] Spring Trivia "What is Initial Tension?" Featured!

[Spring News August Issue] Spring Trivia "What is Initial Tension?" Featured!

August issue of our monthly Spring News! Leave all your spring needs to us.

Tension springs exert a force that tries to keep the coils in contact with each other even when unloaded, and this force is referred to as "initial tension." No deflection occurs until the load reaches the magnitude of the initial tension. When a force greater than the strength of this initial tension is applied, the contacting coil sections begin to open up. In general, when using hard steel wire as a standard, the initial tension for stainless steel wire is appropriately set to be 10-15% lower, while for phosphor bronze, brass wire, and nickel silver wire, it is set to be 50% lower. Please leave the design, estimation, and production of various springs to us. *For more details, please refer to the PDF materials or feel free to contact us.

  • Spring

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"Spring News May Issue" features trivia about springs: "About the number of coils"!

"Spring News May Issue" features trivia about springs: "About the number of coils"!

Spring News May issue delivered every month! Introducing the flat parts at both ends of the compression spring.

The seat coil count refers to the flat-looking parts at both ends of the compression spring, which do not act as coils. This seat coil often consists of one coil at each end, so in the case of a typical compression spring, it totals 1 coil + 1 coil, resulting in 2 coils. For springs where the tip of the coil is in contact with the next coil, the seat coil count is 2 coils, with one coil at each end. If the first and last coil sections are not in contact with the next (previous) coil section, and the polished section is 3/4 of a coil, then each end will be 0.75 coils, resulting in a seat coil count of 0.75 coils + 0.75 coils, totaling 1.5 coils. Please leave the design, estimation, and production of various springs to us. *For more details, please refer to the PDF materials or feel free to contact us.*

  • Spring

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[Spring News July Issue] Spring Trivia "What is Free Height?" Featured!

[Spring News July Issue] Spring Trivia "What is Free Height?" Featured!

Spring News July issue delivered every month! Introduction to free height (free length, free length).

The free height (free length) is the height (length) of the spring when no load is applied in the case of a compression spring. In the case of a tension spring, the free length is the inner dimension between one hook and the other hook. When measuring the free length of a tension spring, measure the inner dimension directly between the hooks. If it is difficult to measure the inner dimension, measure the outer dimension between the hooks and subtract (wire diameter × 2) from that value. Please leave the design, estimation, and production of various springs to us. *For more details, please refer to the PDF document or feel free to contact us.

  • Spring

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[Spring News October Issue] Spring Trivia: "What is the Spring Constant?"

[Spring News October Issue] Spring Trivia: "What is the Spring Constant?"

The October issue of our monthly Spring News is here! We are introducing the spring constant.

The load of the spring increases in proportion to the amount of deflection. The spring constant refers to the load per 1mm of deflection. It is appropriate to set the spring constant between 30% and 70% of the total deflection amount. Tension springs have an initial tension, and deflection occurs when the load exceeds this initial tension. Please leave the design, estimation, and production of various springs to us. *For more details, please refer to the PDF document or feel free to contact us.

  • Spring

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"Spring News September Issue" includes trivia about springs: "Heat Treatment"!

"Spring News September Issue" includes trivia about springs: "Heat Treatment"!

September issue of the Spring News delivered every month! Tempering will be done in an electric furnace.

Heat treatment is performed to eliminate distortion after spring forming and to stabilize it. The temperature and time are set according to the material and wire diameter. Previously, we used quenching treatment (heating followed by rapid cooling to harden), but now we perform tempering treatment (technically referred to as low-temperature annealing) in an electric furnace. When piano wire or steel wire undergoes tempering treatment, a thin oxide film forms on the surface, changing it to a blue color. This blue color is referred to as temper color. Please leave the design, estimation, and production of various springs to us. *For more details, please refer to the PDF document or feel free to contact us.

  • Spring

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