Last Updated： Aggregation Period:Jan 07, 2026～Feb 03, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Jan 07, 2026～Feb 03, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Jan 07, 2026～Feb 03, 2026
This ranking is based on the number of page views on our site.
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In order to meet our customers' requests, we strive daily to improve our technology so that we can deliver high-quality products.
We have established a production system capable of accommodating both small lots and mass production, equipped with comprehensive facilities to provide our customers with peace of mind. Please feel free to consult with us first.
We will introduce our achievements in impregnation treatment related to automotive parts and electronic/electrical components!
Miyahara Industries conducts impregnation processing for metal castings and sintered parts. Impregnation processing involves injecting resin into the pores of castings or the gaps in sintered parts, hardening it, and sealing those unwanted holes. We have various usage records, including automotive parts, precision machinery, and electronic and electrical components, as well as general industrial applications. 【Impregnation Processing Achievements (Excerpt)】 ■ Automotive Parts: Engine blocks, cylinder heads ■ Precision Machinery: Hydraulic cylinders, casings ■ Electronic and Electrical Components: LCD TV parts, underwater pump parts ■ General Industrial Applications: Outboard engine parts, general-purpose engine parts ■ Others: Gas appliance parts, air conditioning units, water valve components *For more details, please refer to the external link page or feel free to contact us.
We will introduce examples of how the protective treatment fills the fine gaps between resin and metal, providing resistance to expansion and contraction of parts due to external air and temperature changes, and preventing water intrusion!
At Global Coating Co., Ltd., since our establishment, we have specialized in improving defects such as voids and pores, which are weaknesses in materials like powder metallurgy, castings, die-cast, and resin insert parts, thereby providing high reliability for automotive components and more. This document allows you to download a collection of case studies titled "Problem-Solving Case Studies," which summarize stories that address the following concerns: ● I want to improve the machinability of powder metallurgy. ● I want to improve the painting yield of laminated yokes. ● I want to enhance the strength of magnets. ● I want to increase the sealing performance of connectors and sensors. ● I want to improve the sliding properties in environments where oil cannot be used. ● I want to reduce the wear of resin gears. *Please view the case studies as a PDF file available for download.
![[Case Study on Problem Solving] I want to improve the machinability of powder metallurgy.](https://image.mono.ipros.com/public/product/image/ef6/2000679313/IPROS37910581994002564111.png?w=280&h=280)
Contributing to improved machinability through resin impregnation treatment! Introduction of a case where manufacturing costs were significantly reduced.
"When machining sintered parts, burrs occur on the finished surface, and while we want to improve machinability, changing processing conditions or cutting oils is cumbersome, so we were wondering if there is a better method." Sintered parts are intermittently processed materials with fine pores, which can easily generate frictional heat on the cutting surface, leading to plastic deformation and causing burrs. However, by using resin impregnation treatment to fill the pores, we can suppress the generation of frictional heat and improve machinability. Since adopting the resin impregnation treatment, burrs on the finished surface have almost ceased to occur, and processing defects have been reduced. 【Case Summary (Excerpt)】 ■Challenges - Burrs occur on the finished surface when machining sintered parts, and while we want to improve machinability, changing processing conditions or cutting oils is cumbersome. ■Solution - By filling the pores with resin impregnation treatment, we can suppress the generation of frictional heat and improve machinability. *For more details, please refer to the PDF document or feel free to contact us.
![[Case Study for Problem Solving] I want to improve the strength of the magnet.](https://image.mono.ipros.com/public/product/image/0ef/2000679317/IPROS52264123313340031732.png?w=280&h=280)
Contributing to strength improvement with resin impregnation treatment! Here we introduce cases where the strength of the pressure ring has increased by approximately 1.2 to 1.5 times.
We were facing the concern that the strength of the neodymium magnets was insufficient and could not meet the customer's specifications. In response, our company improved the strength by performing a resin impregnation treatment using an impregnant close to the grade of adhesives. As a result of testing the components after the resin impregnation treatment, the compression ring strength improved by approximately 1.2 to 1.5 times, thereby satisfying the customer's specifications. [Case Summary (Excerpt)] ■Issue - The strength of the neodymium magnets was insufficient and could not meet the customer's specifications. ■Solution - By performing a resin impregnation treatment using an impregnant close to the grade of adhesives, we achieved an increase in strength. *For more details, please refer to the PDF document or feel free to contact us.
![[Case Study for Problem Solving] Want to Improve Sealing Performance in Harsh Environments](https://image.mono.ipros.com/public/product/image/4ef/2000679321/IPROS37728431049093436116.png?w=280&h=280)
Contributing to improved sealing with protective treatment! A case where the occurrence of abnormalities due to contact failure has been reduced.
"We wanted to prevent water from entering the metal terminals of the resin connectors used in construction machinery, which causes contact failure. However, since the drawings have already been approved by the customer, we wanted to contribute to sealing properties without changing the drawings." In response, our company proposed to perform a protective treatment (impregnation treatment for resin parts) on the existing designed components using an impregnant for resin adhesion. As a result, the sealing performance improved, reducing the occurrence of anomalies due to contact failure and enhancing quality. [Case Summary (Excerpt)] ■ Issues - We wanted to prevent water from entering the metal terminals of the resin connectors used in construction machinery, which causes contact failure. - Since the drawings have already been approved by the customer, we wanted to contribute to sealing properties without changing the drawings. *For more details, please refer to the PDF document or feel free to contact us.
A processing technique that fills "casting defects" with an infiltrating liquid!
At Izumi Seal Industry Co., Ltd., we provide a technology called "organic vacuum pressure impregnation treatment" that permeates and fills gas holes and pinholes, which inevitably occur during the manufacturing process of casting products such as aluminum castings and aluminum die castings. Through impregnation processing, products can be endowed with various characteristics, such as pressure-resistant airtight performance and corrosion resistance. 【Features】 ■ Fills gas holes and pinholes ■ Various characteristics can be imparted *For more details, please refer to our catalog or feel free to contact us.
Impregnation treatment for aluminum alloys! A surface with fewer defects is obtained, improving functionality.
By performing an impregnation treatment on aluminum alloy, it can be confirmed that fine surface defects are filled. Furthermore, by subsequently conducting chemical treatment, plating, or painting, a surface with fewer defects is obtained, enhancing functionality. *For more details, please refer to the PDF document or feel free to contact us.
Are you struggling with internal voids that occur in the casting process? By performing an impregnation treatment, you can eliminate the need to discard parts with voids.
Since our establishment in 1986, we have aimed to be a specialized manufacturer of aluminum impregnation treatment, with the goal of "thoroughly responding to customer needs and striving for 100% satisfaction." In addition to the vacuum impregnation treatment technology we have cultivated over the years, we are also working to improve our surface treatment processing technology. What is the 'organic vacuum pressure impregnation treatment' that we perform? ★ For more details, please download the PDF document. [Contents] ■ What is impregnation? ■ Effects of impregnation treatment [About necessity] [Main purposes of impregnation treatment] Products processed through impregnation can acquire various characteristics: ■ Providing pressure-tight sealing performance ■ Providing corrosion resistance ■ Pre-treatment for plating, surface treatment, and painting ■ Improving machinability ■ Enhancing physical strength ■ Improving insulation resistance * For more details, please download the PDF document or feel free to contact us.
Would you like to try our impregnation processing for the pressure leakage defects in pressure-resistant castings?
◆Would you like to try our impregnation processing for the pressure leak defects in pressure-resistant castings? ◆The impregnation solution cures 100% to prevent pressure leaks.
"Impregnation" used to prevent the intrusion of water and oil. Basic knowledge including processes and principles is provided.
This document introduces Global Coating's "Seal Processing for Electronic Components," which involves resin impregnation, dry lubrication, and anti-corrosion coating. It includes explanations of impregnants, as well as "Advantages and Disadvantages of Impregnation" and "Impregnation Process." Additionally, it features examples of applications such as "Knock Sensors" aimed at preventing the intrusion of water and oil, accompanied by photographs. 【Contents】 ■1. What is an Impregnant ■2. Impregnation Process ■3. Principle of Adhesion ■4. Advantages and Disadvantages of Impregnation ■5. Application Examples *For more details, please refer to the PDF document or feel free to contact us.
![[Case Study on Problem Solving] I want to improve the painting yield of laminated yokes.](https://image.mono.ipros.com/public/product/image/fcf/2000679315/IPROS08841933132589274304.png?w=280&h=280)
Contributing to improved yield through resin impregnation treatment! A case where defects that occurred at a rate of 20% to 30% were reduced to zero.
In laminated yokes, coatings are applied for protection against corrosion and for insulation purposes. However, pinholes occur in the coating film, leading to defects, which has raised concerns about finding effective methods to improve yield. In response, our company performed resin impregnation treatment to seal the gaps between layers and prevent the occurrence of pinholes. As a result, we received feedback saying, "The defects that had occurred at a rate of 20% to 30% have been reduced to zero, which has been a great help." [Case Summary (Excerpt)] ■ Issues - In laminated yokes, coatings are applied for protection against corrosion and for insulation, but pinholes occur in the coating film, leading to defects. - Is there an effective method to improve yield? ■ Solution - Conducted resin impregnation treatment to seal the gaps between layers and prevent the occurrence of pinholes. *For more details, please refer to the PDF document or feel free to contact us.
It is possible to impart various characteristics to products processed by immersion treatment.
Impregnation refers to a technique that involves permeating and filling the so-called "casting defects," such as gas holes and pinholes, which inevitably occur during the manufacturing process of cast products like aluminum castings and aluminum die castings, with an impregnation liquid. Products processed by impregnation can acquire various characteristics. 【Main purposes of impregnation processing】 ■ Providing pressure-tight airtight performance ■ Providing corrosion resistance ■ Pre-treatment for plating, surface treatment, and painting ■ Improving machinability ■ Enhancing physical strength ■ Increasing insulation resistance *For more details, please refer to the PDF document or feel free to contact us.
Proposal for organic vacuum pressure impregnation treatment and chemical treatment for aluminum alloys.
We propose "Vacuum Pressure Impregnation Treatment with Sealing for Aluminum Alloys and Surface Treatment." "Organic Vacuum Pressure Impregnation Treatment (Sealing Vacuum Pressure Impregnation Treatment)" has a low shrinkage rate during curing and a small surface tension, allowing for quick penetration deep into the material. "Chemical Conversion Treatment (Trivalent Chromium Chemical Conversion Treatment)" improves the corrosion resistance of aluminum alloys and can suppress the disadvantage of chromate treatment, which is the reduction in corrosion resistance during heating. 【Organic Vacuum Pressure Impregnation Treatment (Sealing Vacuum Pressure Impregnation Treatment)】 ■ Low shrinkage rate during curing ■ Quick penetration due to small surface tension ■ Does not deteriorate even with long-term use ■ Cured resin is strong yet flexible ■ High resistance to foreign substances mixed in during the treatment process *For more details, please refer to the PDF materials or feel free to contact us.
![Organic vacuum pressure impregnation treatment [Impregnation solution used: Ultra Seal]](https://image.mono.ipros.com/public/product/image/653/2000615018/IPROS49419999212341300353.jpeg?w=280&h=280)
We are using "Ultra Seal Rexeal100," which is certified by the U.S. military international standard "MIL."
In our company’s "Organic Vacuum Pressure Impregnation Treatment," we use "Lexile 100," which is officially certified to the U.S. military international standard "MIL," for the impregnation process. 【Features】 ■ Low shrinkage rate during curing ■ Small surface tension allows for quick penetration ■ Does not degrade even with long-term use ■ Cured resin is strong yet flexible ■ High resistance to foreign substances mixed during the processing ■ Superior performance compared to standard methacrylic organic impregnating agents ■ Extremely excellent chemical resistance and heat resistance ■ Manufactured based on ISO9002 ■ Officially approved under the stringent MIL-1-17563C of U.S. military international standards ■ Up to 95% recyclable, enabling significant cost reduction *For more details, please download the PDF materials or feel free to contact us.
![[Case Study] Liquid Residue in Tapped Holes After Immersion Treatment](https://image.mono.ipros.com/public/product/image/4d9/2000618917/IPROS26872595840992669668.png?w=280&h=280)
We solve problems such as 'It's very difficult to conduct liquid residue inspections and removal work in-house!'
Manufacturers who have switched their impregnation processing from other companies to ours previously experienced occasional liquid residue, which led to complaints from customers. After switching to our services, we received feedback saying, "There is absolutely no liquid residue, and we are very grateful for that." Furthermore, we also heard, "We have been doing business for over 15 years, and we are truly thankful that there has never been a delay in delivery, even after conducting thorough inspections for liquid residue, dents, and scratches." <Do you have any of these concerns?> ■ Occasionally experiencing liquid residue, leading to complaints from customers ■ Performing liquid residue inspections and removal work in-house after receiving from the impregnation manufacturer, which is quite burdensome *For details on solutions and effects, please download the PDF materials or feel free to contact us.
Our company can handle all three processes—impregnation treatment (nest stopping), trivalent chromium chemical treatment, and painting—in a consistent system.
Our company conducts metal die casting, impregnation treatment of cast products, trivalent chromium chemical treatment, and painting. 【Features of Impregnation Treatment】 ■ Adoption of 'Organic Vacuum Pressure Impregnation Method' ■ Impregnation agent used is 'Rexeal 100' from Ultra Seal Co., Ltd. *Official certification under [MIL-I-17563C] ■ Prevents leakage by sealing through holes ■ Prevents corrosion from inside the voids by filling them ■ Prevents corrosion from below the treatment surface by filling voids that appear on the surface 【Effects and Features of Trivalent Chromium Chemical Treatment】 ■ Uses 'Sartec 650V' from Sartec Co., Ltd. ■ Improves corrosion resistance of aluminum alloys ■ Enhances rust prevention effects ■ Improves adhesion for painting as a base layer ■ Enhances corrosion resistance of the paint film ■ Can suppress the decrease in corrosion resistance during heating, which is a disadvantage of chromate treatment ■ The film is thin, with no dimensional changes ■ Complies with RoHS directive (no hexavalent chromium content) *Upon request, our partner company can also handle painting. For more details, please download the PDF document or feel free to contact us.
Casting products are subjected to impregnation sealing treatment under normal temperature and pressure conditions. The heat resistance temperature is 1500 degrees, and continuous use at 1000 degrees is possible. It prevents high-temperature oxidation of various metals.
High purity, inorganic agents are liquefied to treat the voids in various metal products at room temperature. We can also provide treatment for products that have experienced air leakage. Compared to vacuum impregnation treatment, our method offers lower costs and shorter delivery times, with the ability to target specific areas precisely. Our transparent room temperature impregnation treatment with a heat resistance of 1500 degrees is unique to our company.
By performing immersion treatment, it is possible to provide various positive effects!
The products treated with our "organic vacuum pressure impregnation" process provide the following effects: 【Effects on Products】 ■ Leak Prevention: By sealing through holes, we prevent leaks. ■ Corrosion Resistance: By filling voids, we prevent erosion from within. ■ Pre-treatment for Surface Treatment: By filling voids that appear on the surface, we prevent corrosion from beneath the treatment surface. *For more details, please download the PDF materials or feel free to contact us.
![Organic vacuum pressure impregnation treatment [What is the impregnation method?]](https://image.mono.ipros.com/public/product/image/a23/2000615015/IPROS1403194292785385821.png?w=280&h=280)
There are various methods for "impregnation treatment," including inorganic and non-pressurized types, and I will introduce the differences among them.
What is the "Organic Vacuum Pressure Impregnation Treatment" that our company conducts? Products are placed in a basket within a vacuum device, and the pressure inside the device is reduced to create a vacuum state. Furthermore, by applying compressed air, the impregnation agent is filled deep into the defective parts of the product, which is referred to as "Organic Vacuum Pressure Impregnation Treatment." Compared to inorganic systems, it excels in sealing properties and water resistance, and this vacuum pressure impregnation method allows the impregnation agent to penetrate even deeper into the voids. *For more details, please download the PDF materials or feel free to contact us.*
Aren't you outsourcing some parts of various processes? Our company can handle all three processes—impregnation treatment, chemical treatment, and painting—in a consistent system.
Our company conducts impregnation treatment and trivalent chromate treatment for metal die-cast and cast products. To address pressure leaks and water leaks caused by casting defects in pressure-resistant parts, we apply impregnation treatment (sealant treatment) to prevent defects (leaks) and also expect improvements in corrosion resistance. Among the impregnation methods, we have adopted the "organic vacuum pressure impregnation method," and we use "Rexeal 100" from Ultra Seal, which is recognized and certified worldwide. It has formal certification under [MIL-I-17563C]. We believe this is the most effective method currently available for achieving sealing effects. By applying impregnation treatment to sudden defective products caused by casting defects, we add value to the products themselves and improve corrosion resistance while preventing plating blisters through sealing. Many companies are incorporating impregnation treatment into their manufacturing processes, which can significantly reduce costs by decreasing waste and regeneration. Furthermore, we also perform trivalent chromate treatment using "Sartec 650V," which provides corrosion resistance comparable to hexavalent chromium and offers various benefits such as improved adhesion in pre-treatment for painting. (Neutral salt spray test for over 336 hours)
![Organic vacuum pressure impregnation treatment [What materials can be processed?]](https://image.mono.ipros.com/public/product/image/dd8/2000615019/IPROS18010921614402558018.png?w=280&h=280)
Introducing the results of the immersion treatment!
We would like to introduce actual cases that we have handled using our "Organic Vacuum Pressure Impregnation Treatment"! 【Processable Materials】 ■ Die Casting: Aluminum alloys, zinc alloys, magnesium alloys, copper alloys ■ Iron-based: Cast iron, sintered materials, stainless steel ■ Copper Alloys: Brass, bronze, gunmetal ■ Others: Ceramics, plastics 【Application Examples (Excerpt)】 ■ Transportation Equipment: Cylinder blocks, engine blocks, valves, etc. ■ Hydraulic Equipment: Water pumps, air valves, hydraulic pumps, etc. ■ Pneumatic Equipment: Air conditioning bodies, cases, gas regulators, etc. ■ Others: Marine parts, water supply valves, etc. *For more details, please download the PDF materials or feel free to contact us.
