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  • Rust removal after wire EDM|No need to polish, just soak in the solution!

Rust removal after wire EDM|No need to polish, just soak in the solution!

Koji Hashimoto
General Director

Are you having trouble with rust caused by wire cutting? It seems that there are sites where rust is removed by scraping it with a file or sandpaper, but this method may damage the workpiece.

This article will introduce a rust remover that is easy to use simply by immersing a workpiece in the solution, and is odorless, non-irritating, and safe.

Easy and Safe|What is a rust remover “HYP-R1S”?  

"HYP-R1S" is an odorless, non-irritant rust remover.
It can be used to remove rust after wire EDM, rust on metal parts, and oxide film. Its main ingredient is phosphoric acid, which does not produce foul odors or toxic gases due to reactions with metal ions. There is no slime when washing with water, and work can be performed safely and comfortably.

・ Rust removal from metal parts and products generated during the manufacturing process
・ Rust removal during wire cutting
・ Pretreatment of painting, plating, etc.
・ Stainless steel pickling finish
・ Rust removal from machined materials

Metal products such as steel and stainless steel

◎ Does not degrade the luster of metal surfaces and does not cause copper coloration
◎ Quick treatment (1 to 10 minutes) without damaging metal surfaces
◎ Composed of ingredients that are safe for the human body and does not produce irritating or toxic gases
◎ Non-flammable, non-explosive, and safe to handle
◎ Can be diluted with water (1 to 10 times) for economical use

Main ingredient Phosphoric acid
Color Colorless or pale yellow
pH 1.9(1%)
Specific gravity 1.17(20℃)
Capacity (packing) 6ℓ / 20ℓ(BIB / polyethylene can)

How to use “HYP-R1S”

1 | Depending on the degree of rust on the surface to be treated, use the solution between original density and about 10 times dilution.
2 | Immerse the rusted workpiece. (Guideline: within 10 minutes)
3 | Wash with water as soon as the rust is removed.
4 | Anti-rust treatment. (Use neutralizer or oil-based rust preventive)

* Please use the form at the bottom of this page to inquire about rust preventives.

* Handling of "HYP-R1S"
・For immersion treatment, use a hard plastic container. Avoid metal containers.
・If any discoloration is observed on the solution or the workpiece, replace the entire liquid. The replacement with new solution is more effective than using a refill.
・When replacing the solution, remove sediment from the bottom of the container.

Stocking in Vietnam

The rust remover "HYP-R1S" is a product of NMC Co., Ltd. (Japan). UENO is an authorized distributor of NMC in Vietnam. Industrial chemical products such as rust removers and rust preventives require a license to import. Therefore, we import a large quantity from Japan and keep them in stock for our customers in Vietnam.

NMC Co., Ltd.
A Japanese manufacturer of industrial chemical products.
Rust treatment agents for wire EDM, rust preventives, cutting and grinding agents, press lubricants, cleaning agents, etc.

UENO offers a variety of chemical products that are friendly to the earth and people.
For customers in Vietnam, please contact us using the form below.

Inquiry Form

Please feel free to contact us from the form as below.

We accept by phone and email.

KOA-SHA (THAILAND) (hereinafter referred to as the "Company" or "We"), in the variety of services provided by the Company (hereinafter referred to as the "Services"), established the following privacy policy (hereinafter referred to as the "Policy").

Definition of Personal Information

The term "Personal Information" as used in this Policy, means information about a living individual which can identify the specific individual, including name, date of birth, and other descriptions (including other information that can be easily matched to identify a specific individual).

Acquisition of Personal Information

We acquire personal information by legally fair means.

Use of Personal Information

The Company shall use personal information for the purpose of business as necessary within the scope of the following.

  • To deliver optimized information to the individual user of the Service.
  • To help improve the quality of the Service by statistical analysis.
  • In response to inquiry in regard to the Service.
  • To conduct questionnaires regarding the Service.
  • To send information regarding campaigns and new products by the Company.
  • Other purposes associated with the abovementioned purposes of use.
About cookies

The Company makes use of cookies on the Service website. In addition, cookies may be used in a portion of the advertising system. A cookie is a small amount of data regarding usage history that is sent to your browser from a website’s server and is stored on the user’s hard drive. If the user prefers the Company not to make use of cookies, the user can set their browser to reject cookies. However, if the cookies are rejected, there is a possibility that the use of the Service on the website will be affected.

Provision of Information to Third Parties

The Company will not provide personal information to any third party without obtaining prior consent by the individual concerned, except as required by applicable laws and regulations.

In addition, the Company may access personal information and disclose it to third parties in the following cases.

  • Under Prior Consent of the Individual User Concerned
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  • When reasonable measures are necessary to defend the rights or property of the Company.
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  • When cooperation is necessary with a national or local government organization, or a business operator entrusted by such an organization in executing affairs under laws and regulations, and in which obtaining the consent of the user(s) is likely to impede the execution of the affairs.
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Management of Personal Information
  • The Company will maintain the accuracy of personal information and manage it safely.
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Request for Notification, Disclosure, Correction, Suspension of Use of Personal Information

In the case the Company receives request from the individual user regarding the disclosure, correction, addition, deletion, suspension of use, or erasure of personal information, stoppage of use by a third party or notification of use, after confirmation that the requester is the individual user, the Company will respond without delay in accordance with the Personal Data Protection Act.

Note that in the case that the request does not meet the requirements stipulated by the Personal Data Protection Act, or the reason to reject such request is permitted by the Personal Data Protection Act or other laws and regulations, the request may not be fulfilled.

In addition, there is no payment required or fees associated with the request for disclosure by the individual user. However, the cost of communication from the individual user to the Company, transportation expenses, and expenses associated with the preparation of materials for the purposes of individual identification will be the responsibility of the individual user.

Revision of Privacy Policy

The Company will review the operational status of the handling of personal information and make efforts for continuous improvement, and may change the Policy as necessary. After such changes to the Policy, the Policy will be published on the Company’s website.


Please address inquiries regarding the Company’s use of personal information to

Established October 01, 2021

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