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  6. Immediate improvement! The pitfalls of metal processing! There are reasons for material rust and discoloration.

Immediate improvement! The pitfalls of metal processing! There are reasons for material rust and discoloration.

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last updated:Mar 25, 2026

キョーワハーツ
キョーワハーツ
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Kyowa Hearts works with various types of metals. Some metals can easily rust depending on how they are handled.

It is not uncommon for mild, stain-like substances that are difficult to classify as rust to occur. To prevent these defects from arising in our products, we proceed with our work while keeping in mind the characteristics that lead to rust. This document introduces the conditions and environments under which various metals rust. We have succinctly summarized the conditions and environments that induce rust in various metal materials. Through the accumulation of knowledge and experience, we are well-versed not only in press processing technology but also in metal materials. Our team consists of professionals in metal processing. Would you like to solve your metal processing concerns together with us? Please feel free to contact us! *For more details, please download the PDF or contact us.*

    Processing Contract
スクリーンショット

Immediate improvement! The pitfalls of metal processing! There are reasons for material rust and discoloration.

スクリーンショット 2020-12-16 164646.png
スクリーンショット 2020-12-16 164646.png

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Automotive electrical components, machinery industry parts, medical equipment supplies, accessory parts, etc.

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    \ Immediate Improvement / The Pitfalls of Metal Press Processing! There are reasons for material rust and discoloration.

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\ Immediate Improvement / The Pitfalls of Metal Press Processing! There are reasons for material rust and discoloration.

\ Immediate Improvement / The Pitfalls of Metal Press Processing! There are reasons for material rust and discoloration.

TECHNICAL
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What is precision press processing and bending processing?

What is precision press processing and bending processing?

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Professional expertise shared! Selection of materials in the design of thin plate springs.

Professional expertise shared! Selection of materials in the design of thin plate springs.

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Precision forging processing: There is a reason for the method of selecting appropriate materials!

Precision forging processing: There is a reason for the method of selecting appropriate materials!

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【Don't Miss Out】 Know-how for Manufacturing Products Using Stainless Steel as a Leaf Spring

【Don't Miss Out】 Know-how for Manufacturing Products Using Stainless Steel as a Leaf Spring

TECHNICAL
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"Knowledge of Metal Materials for Designers" Welding Various Metals

"Knowledge of Metal Materials for Designers" Welding Various Metals

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What is a press die that you can't ask about now?

What is a press die that you can't ask about now?

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Processing Techniques for Designers (Burring Process)

Processing Techniques for Designers (Burring Process)

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Wow, are you really going that far? Commitment to precision mold manufacturing TOP 3

Wow, are you really going that far? Commitment to precision mold manufacturing TOP 3

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[Notice] Information on Exhibiting at the 25th Mechanical Components Technology Exhibition

  • Seminar・Event

This is an announcement for our participation in the 25th Mechanical Components Technology Exhibition! The first real exhibition of this year will be held at Makuhari Messe. Shall we solve your metal processing concerns together? Please come to the Kyo-Wa Hearts booth for technical consultations and information gathering! We will give away technical materials as novelties! (Note: The technical materials will be available until they run out. Thank you for your understanding.) Details of the exhibition are as follows: ■ Event: 25th Mechanical Components Technology Exhibition ■ Date: February 3 (Wed) to February 5 (Fri), 10:00 AM to 6:00 PM (ends at 5:00 PM on the last day) ■ Location: Makuhari Messe ■ Admission Fee: Please apply for an invitation ticket from the URL above. It will be free. (Please note that if you do not have an invitation ticket, the admission fee will be 5,000 yen.) ■ Booth Number: Hall 5, 15-5 [17] ■ Products to be exhibited: We plan to showcase fine press parts, progressive drawing parts, prototypes, magnesium alloy processed products, our own products Nuke and Maggreen. We sincerely look forward to your visit.

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Notice of Exhibition Participation for the Virtual Industry Exchange Exhibition 2020

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■Event: <Virtual Industry Exchange Exhibition 2020> ■Date: January 20 (Wed) - February 19 (Fri) ■Location: Online URL: https://www.sangyo-koryuten.tokyo/ ■Admission Fee: Free The online exhibition can be easily accessed at a time that is convenient for you. For those who are struggling to gather information due to the COVID-19 pandemic, we warmly invite you to attend the Virtual Industry Exchange Exhibition 2020. We look forward to your visit. Business negotiations can also be conducted online, so please feel free to contact us.

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キョーワハーツ

キョーワハーツ

Industrial Electrical Equipment

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Our company specializes in fine, complex, and precision press processing. *We also sell molds! We can handle everything from examining the shape of customer parts, prototyping, mold manufacturing, to mass production processing. 【Our Expertise Developed Over Time】 1. Deep drawing and flat spring processing 2. Fine processing (plate thickness: 0.03) 3. Complex shapes and high-precision bending processing 4. Processing of difficult materials (titanium, shape memory alloys, magnesium alloys, etc.) 【Proposal Power Supporting Quick Start-Up】 Many customers consult us during product development, asking if certain processing is possible, seeking advice during the conceptual stage, or wanting to start with prototyping. In the development phase, we provide comprehensive advice on material and shape decisions, as well as secondary processing, to fully support the launch of new products. We also believe that "refined products are a testament to stable quality," and we enter mass production only after sufficient adjustments (taking extra care). 【Efforts in In-House Product Development】 We are also engaged in in-house product development utilizing our cultivated precision press processing technology. We have developed a new type of file for binding documents, called "Nuke," which allows for easy insertion and removal of documents from the center, attracting attention as an item that enhances office productivity.

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