河新 List of Products and Services

■Free cleaning test for actual machines now accepting applications■ ★Ideal for the following people★ 'Those looking for alternatives to chlorine-based and bromine-based cleaning agents' 'Those struggling with ineffective cleaning' 'Those considering new cleaning processes' This is an ideal alternative cleaning agent to chlorine-based and bromine-based cleaning agents such as "trichloroethylene" and "methylene chloride." It has less impact on the environment and human health compared to chlorine solvents and alternative fluorocarbons, ensuring high safety and cleaning performance. It is not subject to the Organic Solvent Poisoning Prevention Regulations or the PRTR Law. 【Features】 ■High cleaning ability Exhibits excellent removal effects against various types of dirt ■High drying capability Dries quickly through hot air drying or vacuum drying ■High safety Has less environmental impact and higher safety compared to chlorine solvents and alternative fluorocarbons Not subject to the Organic Solvent Poisoning Prevention Regulations or the PRTR Law ■High recyclability Allows for distillation separation from dirt, enabling continuous use and regeneration High thermal stability and excellent recoverability *For more details, please refer to the PDF document or feel free to contact us.

■Free cleaning test for actual machines now accepting applications■ ★Ideal for those who:★ "Are struggling with rust and stains caused by water-based or semi-water-based cleaning agents" "Are having trouble with ineffective cleaning" "Are considering new cleaning processes" "Are washing with hydrocarbons but still have water stains" "Are unsure what kind of dirt may be attached to purchased parts, etc." "HS-WS Emulsion Cleaning" forms a W/O type emulsion by adding water to the water-repellent grade "HC-WS series" and applying physical forces such as ultrasonic waves for cleaning. It effectively addresses a wide range of contaminants, including oily dirt, water-soluble cutting oils, water stains, polishing debris, buffing debris, solid particles, and dried dirt. This cleaning method is made possible by the excellent water displacement, water separation, and durability of the "HC-WS series." 【Features of HS-WS Emulsion Cleaning】 ■ Powerful cleaning capability allows for the removal of dried water-soluble dirt and solid particles ■ Excellent separation performance ensures reliable separation of water-soluble dirt, allowing for repeated use ■ Used for high cleanliness requirements such as pre-cleaning before dry coating (PVD, DLC).

■Cleaning test with actual equipment now accepting applications■ ★Ideal for those who:★ "Are struggling with ineffective cleaning" "Are considering new cleaning processes" "Cannot introduce cleaning machines due to maximum quantities specified by fire regulations" "Experience stains or rust with water-based cleaning" The "HA Series" is a next-generation cleaning agent developed to solve all the issues of existing cleaning agents. It does not require rinsing and can be dried immediately after cleaning, preventing the occurrence of water stains, etc. It has no flash point (measured by CCO flash point measurement) and is not subject to fire regulations. It can be used in various situations from parts cleaning to maintenance cleaning. It demonstrates excellent cleaning effectiveness against oil-based machining oils, water-soluble machining oils, water, flux, and more, and dries quickly using warm air or vacuum drying. 【Features】 ■ High cleaning and drying performance ■ No rinse required ■ Non-flammable ■ Recoverable ■ Safe 【Applicable stains】 Oil-based and water-soluble machining oils, oil-based and water-soluble rust preventives, lubricants, urethane, resin stains, pitch, toner, ink, paint, resin coating agents, buffing powder, water, abrasives, organic matter, dust, fingerprints, etc. *For more details, please refer to the PDF document or feel free to contact us.

"CELEFIN 1233Z" is a fluorinated solvent of hydrofluoroolefins (HFOs) that excels in environmental properties, cleaning ability, safety, and handling. With a KB value of 34, it has excellent oil solubility and low surface tension, making it suitable for precision cleaning. It can be used directly with existing fluorine, chlorine, and bromine-based cleaning machines, and as it is a pure substance without additives, liquid management such as distillation regeneration is easy. 【Features】 - ODP is virtually zero, and it does not destroy the ozone layer. - GWP is lower than that of carbon dioxide (CO2), with a very minimal impact on global warming. - KB value is 34, demonstrating excellent oil solubility. - It has a moderate boiling point, low latent heat of evaporation, and excellent drying properties. - It has low surface tension, making it suitable for precision cleaning. *For more details, please refer to the PDF document or feel free to contact us.

Company F mass-produces thin press parts, and after cleaning, these thin parts undergo assembly processes in-house to become finished products. Although the assembly machine was automated, it turned out that the parts we thought were being cleaned were not actually clean, and the automatic machine caused the thin parts to stick together, leading to blockages and difficulties. We had been using trichloroethylene (chlorinated solvent) for cleaning, but due to environmental regulations and its strong toxicity, we were considering alternative cleaning methods. By introducing a hydrocarbon-based cleaning machine that takes into account human health and the environment, we improved cleaning efficiency, resulting in increased productivity. **Challenges** - We do not want to use trichloroethylene due to its toxicity and environmental regulations. - Thin press parts are sticking together and cannot be cleaned. - The takt time is about 3 minutes, but with re-cleaning and other factors, capacity is at its limit. **Results** - Achieved environmental compliance by using hydrocarbon agents. - Performed vacuum ultrasonic cleaning, which effectively cleaned between the thin sticking parts. - By using two drying chambers, we achieved a takt time of 3.5 to 4 minutes. *For more details, please refer to the PDF document or feel free to contact us.*

Company K manufactures cutting parts for automobiles. They had already purchased and operated a hydrocarbon cleaning machine 15 years ago, but due to increasing malfunctions, they were considering an upgrade. It was decided to stick with a hydrocarbon-based cleaning machine, but there was a desire to introduce something better than the current machine. Thus, they introduced our "CLEANVY." With its unique pump system, solvent consumption was reduced by half, and maintenance costs were eliminated. Additionally, running costs were also halved, successfully reducing manufacturing costs. [Challenges] - They use 600L of cleaning solution per month. - The dry vacuum pump has frequent maintenance and breakdown issues. - The replacement of the heating medium oil occurs every 6 months, which is quite frequent. - Poor drying issues have arisen with new parts. [Results] - Reduced the usage of cleaning solution to 300L per month (half). - Achieved maintenance-free operation with a unique vacuum pump system. - Extended the replacement interval for heating medium oil to about once every 3 years, increasing it fourfold. - High drying performance. *For more details, please refer to the PDF document or feel free to contact us.*

Company S is engaged in the press processing of terminal components made of copper and brass materials. It is necessary to remove the press oil before shipping, and although we had a hydrocarbon cleaning one-bath cleaning machine, we are considering an update due to its aging. Amidst fierce cost competition, there was a strong desire to reduce labor costs through automation. By installing an automatic transport mechanism, the burden on workers has decreased, and cost reductions have been achieved through shortened discharge work times. 【Challenges】 ■ Frequent failures due to degradation of the cleaning machine (including the vacuum pump) ■ Desire to shorten work time but unable to secure a large installation space ■ Some items cannot be cleaned in the evening (stains remain) 【Results】 ■ Extremely few failures with the unique vacuum pump system ■ By using an automatic transport one-bath cleaning machine, work time is shortened and it is compact ■ By enhancing distillation capacity, cleaning performance can be maintained throughout the day *For more details, please refer to the PDF document or feel free to contact us.

Company N is a business that provides contract processing for PVD coating. They handle various workpieces with different types of contaminants from a range of customers, applying coatings such as TiN and DLC to substrates like carbide tools (new and re-ground) and metal parts. Insufficient cleaning of equipment can lead to issues such as poor adhesion and outgassing, which are causes of coating defects. Traditionally, it was common to perform manual wiping with acetone after passing through the cleaning machine to avoid defects. However, after introducing "WS Emulsion Cleaning," they have been able to operate without manual wiping. [Challenges] - Manual wiping with acetone after cleaning is time-consuming. - The current cleaning machine has effects on the substrates (cobalt leaching, rust). - Managing the cleaning solution is difficult. [Results] - Improved cleaning performance has led to increased productivity without manual wiping after cleaning. - There is less impact on the substrates, making coating defects less likely. - Liquid management has become easier. *For more details, please refer to the PDF document or feel free to contact us.

Company F is engaged in the machining of metal parts. Before proceeding to the next process after machining, intermediate cleaning is necessary; however, the factory was already at full capacity with the specified amount of cutting oil. Therefore, we used our non-combustible detergent "HA-IS16" for cleaning. This product is a non-halogen, non-flammable solvent that does not fall under the Fire Service Act, but it is not a water-based cleaning agent. Its cleaning performance is superior to that of water-based cleaners, and it is capable of vacuum cleaning and accommodating multiple shapes. Additionally, since it can be regenerated through distillation, there is no need for replacing the cleaning agent or wastewater treatment, thus reducing running costs. [Challenges] ■ The specified quantity under the Fire Service Act is at capacity, and no additional hazardous materials can be added. ■ Water-based cleaning is not possible due to the lack of wastewater treatment facilities. ■ We want to ensure thorough cleaning of the entire part, including blind holes. *For more details, please refer to the PDF document or feel free to contact us.

Company S manufactures aluminum parts through cutting processing and is now accepting orders for new HV and EV parts. Until now, cleaning involved merely dipping in a first-grade petroleum-based cleaning agent. With the acceptance of automotive parts orders, unmanned operations such as machining have become essential, and when using water-soluble cutting oil, the previous cleaning method resulted in stains. We also tested water-based cleaning, but it had poor drying properties and issues such as watermarks arose. Additionally, during quality checks after cutting, air blowing transformed the stains into dry water-soluble residues. "WS Emulsion" can effectively clean even dry water-soluble stains. [Challenges] ■ Stains appear due to the use of water-soluble cutting oil ■ Water-based cleaning has issues with watermarks and drying properties ■ There are also dry water-soluble stains *For more details, please refer to the PDF document or feel free to contact us.

At Company N, we manufacture hydraulic equipment parts through cutting processes and perform assembly before shipping. Previously, we used brominated cleaning agents (1-bromopropane), but due to the very strict allowable management concentration of 0.5 ppm, we were looking for a new cleaning system. We perform cleaning before assembly, but with parts that have blind holes, we were unable to clean thoroughly with brominated solvents, requiring additional cleaning with parts cleaners during assembly. After introducing a hydrocarbon-based cleaning machine, we were able to clean the blind holes effectively, and the productivity of the assembly process improved. [Challenges] ■ Brominated cleaning agents are toxic and difficult to manage. ■ The interiors of blind holes are not being cleaned. ■ Additional cleaning is being done with parts cleaners during assembly. *For more details, please refer to the PDF document or feel free to contact us.

Company T is engaged in contract plating processes for Ni and Sn. The parts entrusted by customers are washed with a hydrocarbon cleaning machine before the plating process. The equipment is aging, and an update is being considered. The process flow was "Tank 1: Vacuum ultrasonic cleaning → Tank 2: Vacuum cleaning," but due to cleaning failures leading to plating defects, unnecessary steps such as passing through twice were involved, and there were also issues with inadequate drying. Therefore, we introduced our "CLEANVY." By cleaning with "Tank 1: Degassing liquid external oscillation system → Tank 2: Vacuum ultrasonic cleaning," we can achieve a clean finish in one cleaning cycle and resolve the issues with inadequate drying. [Challenges] ■ One pass through the cleaning machine is not sufficient, leading to plating defects. ■ There are many types of parts, and some may experience inadequate drying. ■ The maintenance costs for the vacuum pump are high. *For more details, please refer to the PDF document or feel free to contact us.

Company A designs and assembles machine parts. The parts are manufactured externally and arrive coated with anti-rust oil. We manufacture spindle units, but until now, workers have been manually cleaning the incoming parts using parts cleaners. Since these parts rotate at high speeds, any foreign matter can lead to bearing damage. However, issues have arisen due to inconsistencies in cleaning effectiveness among workers. With a one-bath type cleaning machine, we were able to create a compact installation space, significantly improve cleaning effectiveness, and resolve quality issues after assembly. [Challenges] - Residual foreign matter (contamination) negatively affects the quality of the final product after assembly. - There are inconsistencies due to human operation. - Since the volume of parts to be cleaned is not large, we wanted a machine that is as compact as possible. [Results] - By performing vacuum ultrasonic cleaning, we can remove contamination and improve product quality. - If a basket is placed in the washing tank, the cleaning machine automatically handles the cleaning and drying processes. - The one-bath type cleaning machine has a compact installation space. *For more details, please refer to the PDF document or feel free to contact us.*

In parts manufacturing, "cleaning" is one of the important processes to ensure the required quality. With the miniaturization and precision of parts, the required cleanliness has become increasingly stringent. At Kawashin, which boasts 100 years of trust and achievements, we explain the basics of "What is cleaning?", the types of cleaning agents, cleaning methods, examples of problems, and solutions for those facing challenges in maintaining quality and reducing defect rates. 【Selecting a Cleaning Machine Without Fail (Excerpt)】 ◆ What are the types of cleaning agents and how do you select them? ◆ What cleaning and drying methods are available with cleaning machines? ◆ What are examples of cleaning troubles and how can they be resolved? ◆ How should one proceed with considering a cleaning machine? *You can download the free booklet "Selecting a Cleaning Machine Without Fail," which provides basic knowledge about cleaning. Additionally, we offer a collection of case studies showcasing various challenges and achievements in different manufacturing industries. Please feel free to contact us with any concerns regarding cleaning.