山川産業 List of Products and Services

"Do you have any concerns?" - Materials used in high-temperature environments deteriorate quickly. - There are inconsistencies in the polishing of precision parts, leading to unstable quality. - Dimensional changes due to thermal expansion prevent maintaining product accuracy. - Insufficient wear resistance results in a short lifespan of equipment. - The shape of the particles is uneven, making defects in molded products more likely. - High-temperature filters are prone to deformation and clogging. - The performance of heat insulating materials is inadequate, causing electronic components to fail. - High hardness materials are needed, but there are challenges with processability and stable supply. <Features of HS Balls> - Spherical shape with a smooth particle surface, providing excellent moldability and flowability. - Refractoriness of SK37 or higher, allowing stable use in high-temperature environments. - Low thermal expansion rate, offering excellent dimensional stability, ideal for precision applications. - High thermal conductivity, suitable for applications requiring heat dissipation. - High hardness (Mohs hardness 8.5, Vickers hardness 1400HV0.5), providing high wear resistance and long lifespan. We will resolve your concerns with the above features. If you think, "Maybe this could be useful!?", please feel free to contact us.

• Casting Machine

"Do you have any concerns?" - I want to fill the gaps in formwork and piping. - I want to perform dust and moisture prevention at the inspection openings of machinery. - I want to prevent concrete leakage before pouring to avoid rework. - I want to reduce maintenance costs caused by minor leaks from pipe joints. - I want to prevent dust and moisture from entering through gaps in control panels and ducts. - I want to easily fill gaps without using tools. - I want to easily perform temporary fixing. Pitamold adheres molds together to prevent pouring from leaking outside. <Pitamold Features> - Soft and stretchy, adheres tightly even to curved surfaces. - Solvent-free, resulting in zero odor and comfortable working conditions. - White color for easy visibility, preventing construction mistakes. - Resistant to temperature and humidity changes, providing stable performance throughout the year. We will solve your concerns with the above features. If you think, "Maybe this could be useful!?", please feel free to contact us.

• glue
• Sound Parts
• Vibration Testing

"Neo Blast" is a non-metallic abrasive material made from feronickel slag. It features high hardness and specific gravity, with a grit shape suitable for grinding, resulting in minimal dust generation and allowing for clear visibility during work, thereby contributing to improved work efficiency and time savings. Additionally, it is characterized by a free silica content of less than 1% as stipulated by JIS Z0312, ensuring safety. Production at two factories also meets the demand for stable supply. [Features] - Equivalent to feronickel slag as per ISO11126-5:2018 and JIS Z0312:2016 - Capable of simultaneously removing old paint and dirt while adjusting the substrate - Minimal dust generation, reducing the burden on workers - Free silica content of less than 1% - Supply with stable quality, price, and delivery time is possible *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Other cutting tools

"Hyper Pack" is an RCS that coats the surface of sand grains with a thermosetting resin and is used as a casting aggregate in a special mold called "shell mold." It utilizes a two-peak particle size distribution instead of the conventional normal distribution, allowing for customization of particle size indices and blending with artificial sand. The second peak sand (fine sand peak) adheres immediately to the surface of the mold during blow filling, enabling the creation of a highly dense mold surface. [Features] ■ A wide variety of combinations ■ Possesses a meticulously calculated two-peak particle size distribution, achieving a high wall effect ■ Achieves mold filling rates comparable to spherical artificial sand ■ The mold surface is very dense, reducing the amount of coating required ■ In some cases, it is possible to eliminate the need for coating *For more details, please download the PDF or feel free to contact us.

• Casting Machine

The "Big Coater" is a highly efficient coating machine developed with the user's perspective in mind, maximizing the advantages of the "bukkake coating method." It is compatible with all water-based and alcohol-based coating agents using materials such as silicone and graphite. Due to its simple structure, including the pump, there are very few breakdowns or troubles. 【Features】 ■ Two-tank connection system with adjustment tank and circulation tank, along with a stirrer - Reduces mixing and adjustment time - Eliminates the heterogeneity of high-sedimentation coating agents - Stabilizes coating agent concentration, making daily management easy ■ Its open design allows for easy cleaning of the tanks *For more details, please download the PDF or feel free to contact us.

• Other painting machines

The "HS Ball" is a low-expansion artificial sand made of alumina with high fire resistance (SK37 or higher) and low thermal expansion rate. The chemical composition of the general characteristics (representative values) is 68.4% Al2O3, 23.9% SiO2, and 3.3% Fe2O3, with a bulk density of 1.8 for loose filling and 1.9 for dense filling. It is characterized by its round shape and smooth particle surface (no irregularities), as well as high thermal conductivity and hardness (old Mohs hardness: 8.5, Vickers hardness: 1400 HV0.5). 【Product Examples】 ■ #10-20: 1.180mm to 0.600mm ■ #20-30: 0.850mm to 0.425mm ■ #140-200: 0.150mm and above ■ #200-300: 0.106mm and above *For more details, please download the PDF or feel free to contact us.

• Casting Machine

"NE Sand" is a low-expansion artificial sand with a rounded shape that has almost no fine powder adhesion due to special grinding treatment. It features a low thermal expansion rate, is hard (Mohs hardness: 7.5, while silica sand is 7), and contains less than 1% free silica, resulting in extremely low dust generation during work. Examples of use include aggregates for resin-coated sand, roofing materials, base materials, heavyweight aggregates, and burial applications. 【General Characteristics (Representative Values)】 <Chemical Composition> ■SiO2: 51.9 ■Fe2O3: 8.2 ■Al2O3: 3.0 ■MgO: 29.8 ■CaO: 4.9 *For more details, please download the PDF or feel free to contact us.

• Casting Machine

"T5-F" is a natural clay sand for organic self-hardening molds, originating from Amagasaki, with a proven track record in cast iron casting. Due to its moderate SiO2 content, it suppresses mold thermal expansion that causes veining while providing sufficient refractoriness for the pouring temperature of cast iron. Additionally, it exhibits high mold strength in both the furan and alkaline phenolic self-hardening processes. 【Chemical Composition (Typical Values)】 ■SiO2: 92.16% ■Al2O3: 4.44% ■Fe2O3: 0.25% *For more details, please download the PDF or feel free to contact us.

• Casting Machine

We would like to introduce the "Cut-out Gate and Weighing Gate" that we handle. With a sealed structure, there is no dust generation or sand spillage. By using a rotary actuator, it has been made compact. It features a scale for opening degree, making adjustment and management easy, and can be adjusted with just one L-wrench. Additionally, the gate's moving parts have been modularized for easier maintenance. 【Features】 ■ Compact and easy to adjust/manage ■ Easy maintenance ■ No sand spillage *For more details, please download the PDF or feel free to contact us.

• Weighing Machine

We would like to introduce our "Sand and Mold Analysis / Casting Defect Analysis" services. Using sand and mold testing that complies with various standards, as well as unique testing methods, we conduct comprehensive regular analyses of sand and molds. Based on the test results, we assist in sand management to prevent the occurrence of casting defects. Additionally, we perform analyses using various analytical instruments centered around SEM-EDS to identify the sources of inclusions through detailed analysis. From the results obtained, we help comprehensively reduce defects by optimizing casting plans and conditions. 【Test Items (Example)】 ■ Particle Size Distribution ■ Chemical Composition ■ pH and Acid Consumption ■ Green Sand Test ■ Mold Test ■ Ignition Loss (LOI) *For more details, please download the PDF or feel free to contact us.

• Analytical Equipment and Devices

We would like to introduce the "Continuous Mixer" that we handle. It can handle not only clay sand and resin sand but also fine sand and artificial sand, supporting high-precision casting. The sand quantity can be adjusted using a scale, making it easy to modify the amount of sand according to the mold size. Additionally, by simply entering the desired resin addition rate on the touch panel, the amount of addition is automatically adjusted. 【Features】 ■ Achieves high mixing precision ■ Easy sand quantity adjustment ■ Easy measurement ■ Easy modification of resin addition rate *For more details, please download the PDF or feel free to contact us.

• Mixer/agitator

A wide range of products from low-expansion silica sand to high-purity silica sand to meet various needs! Our "Okayama Factory" was established in Kurashiki City, Okayama Prefecture in April 2014. We have a rich lineup of products with characteristics such as high-purity silica sand and low-expansion silica sand, sourced from domestic and imported silica sand materials. The factory is located to serve not only the Setouchi area but also the San'in and Shikoku regions. We primarily supply products to the western Japan region and also support sales via coastal shipping utilizing ports. 【Production Capacity】 ■ Main Equipment and Capacity - Drying equipment (drying capacity 3,000 tons/month) 1 set - Classification equipment (classification capacity 6 tons/hour) 1 set *For more details, please download the PDF or feel free to contact us.

• Casting Machine

Our "Kaketsu Plant" has the Kaketsu Mine, which produces high-quality natural silica sand. The mine consists of a deposit of beach sand with particle sizes ranging from 300 to 600 microns, featuring rounded grains and moderate quality. At this plant, we extract it through open-pit mining, wash it, and apply our unique wet grinding process, followed by drying and classification, supplying numerous excellent products across various fields such as casting, construction materials, artificial turf, and civil engineering. We have been actively engaged in the development of products specifically for organic molds and the recovery and reuse of overflow sand from the molding line, making this plant a core facility for those business developments. 【Representative Products (Partial)】 ■ Silica Sand ・K5 ・KF5 ・FNS5 ・KS4 *For more details, please download the PDF or feel free to contact us.

• Casting Machine

We support the creation of products that meet the advanced needs of our customers and can be trusted for use! Our "Shiga Factory" is equipped with facilities and equipment that leverage the know-how we have cultivated over many years, providing various products for ceramics, building materials, and raw materials for casting under strict management. In particular, our high-purity silica sand can be supplied in a variety of particle sizes after undergoing multiple classification processes in the factory. We create products tailored to the individual needs of our users. 【Production Capacity】 ■ Main Equipment and Capacity - Drying Equipment (Drying Capacity: 6,000 tons/month) x 2 units - Classification Equipment (Classification Capacity: 2,000 tons/month) x 2 units *For more details, please download the PDF or feel free to contact us.

• Casting Machine

"ESQUA" is a dedicated wireless binder and promoter for Espal (melted alumina spherical artificial aggregate). It maximizes the performance of Espal, demonstrating higher mold performance than conventional products. It is easy to replace organic molding methods such as shell mold and cold box methods, significantly reducing odors during molding and casting. 【Expected Effects】 ■ Achieves even higher moisture resistance and mold strength compared to conventional products ■ Reduces the amount of binder added compared to conventional products ■ Improves mold filling properties and reduces staining on molds ■ Easy to replace organic molding methods ■ Significantly reduces odors during molding and casting *For more details, please download the PDF or feel free to contact us.

• Casting Machine

"Neo Blast GR" is an environmentally friendly grinding material made from slag generated during ferronickel smelting, processed using our unique technology. It retains the excellent characteristics of conventional products, such as high hardness, high specific gravity, and grit shape, while optimizing the particle size. In particular, it enables a reduction in usage and an increase in construction speed in blast treatment following the increasingly adopted stripping agent method. 【Features】 ■ Reduction in usage and shortening of construction time compared to conventional products ■ Suitable specific gravity, hardness, and grit shape for blast treatment ■ Superior cost-effectiveness compared to garnet ■ Minimal dust generation, resulting in a good working environment ■ Excellent safety due to free silica content being less than 1% ■ Safety confirmed through leaching tests for heavy metals and other substances *For more details, please download the PDF or feel free to contact us.

• Grinding Machine

"Magusand" is a product made from artificial aggregates that exhibit a black-gray color, designed for use as floor sand, top dressing, and snow melting insulation on golf courses. It possesses excellent features not found in conventional natural sand. The granule size is adjusted for good permeability. Its specific gravity is slightly heavier than regular sand, making brushing easy. It undergoes high-temperature drying, making it sterile and free from weed seeds. Additionally, it does not leach harmful substances. 【Features】 - Prevents frost damage in winter and is recognized for its snow melting effect. - Promotes early sprouting of grass in spring and maintains green leaves in autumn. - Encourages good root establishment and revitalizes grass. - Enhances the vivid color of grass blades. *For more details, please download the PDF or feel free to contact us.*

• others

"Sangreen" is an artificial sand processed from by-products generated during ferronickel smelting, with MgO and SiO2 as the main components. Using our unique technology, we have applied beneficiation treatment to improve the particle shape and surface. It is suitable for shell molds and is effective in the production of complex-shaped molds such as hydraulic components. This product possesses the necessary "high strength" and "low expansion performance" required for mold aggregates. Please feel free to consult us when you need it. 【Features】 ■ Unique beneficiation technology and stable supply ■ Achieves high strength and easy disintegration with low resin ■ Low thermal expansion rate improves dimensional accuracy of molds *For more details, please download the PDF or feel free to contact us.

• Casting Machine

After undergoing washing and drying processes, the surface is very clean and has low viscosity! We would like to introduce "Shimane silica sand," handled by Yamakawa Sangyo Co., Ltd. It is natural silica sand with a round particle shape, suitable for various processes, and it is possible to achieve very good strength development. After undergoing washing and drying processes, it features a very clean surface and low viscosity. 【Product Lineup】 ■SMK5 ■S5 ■S6 ■Clean Sand *For more details, please download the PDF or feel free to contact us.

• others

"Espal #40L" is a suitable aggregate for replenishing sand in self-hardening resin lines. Due to its excellent crush resistance, it improves the recycling yield and reduces dust generation. Since it does not contain free silica, it contributes to improving the working environment at casting sites. It has a shape close to a perfect sphere, allowing for the production of molds with high strength, high density, and low thermal expansion. 【Expected Effects】 - Reduction in the amount of industrial waste and replenishing sand due to improved recycling yield - Improvement of the working environment due to reduced dust generation and free silica content - Prevention of bending defects due to reduced thermal expansion - Increase in mold strength and prevention of burning defects due to improved fillability *For more details, please download the PDF or feel free to contact us.

• Casting Machine

We would like to introduce the high-performance artificial aggregate recycling system "Espal R," handled by Yamakawa Sangyo Co., Ltd. Due to its round and smooth particles, it achieves high strength with low resin and eliminates the need for sand baking. Additionally, it has low thermal expansion, significantly reduces bending, and improves dimensional accuracy. The high-performance artificial aggregate enables energy-saving and labor-saving in the casting process, and our system efficiently recycles it, promising increased productivity and reduced costs. 【Features】 ■ Shortens the casting process - No sand baking required - No rework needed - No cooling wait required ■ Collects shell sand and carbonized sand - No industrial waste disposal costs *For more details, please download the PDF or feel free to contact us.

• Casting Machine

We provide silica sand suitable for underground tank burial construction. We handle washed, classified, and dried silica sand that is free of impurities and has a low moisture content. Since it is produced in a dedicated plant, there is no contamination with other impurities (such as asphalt or oil). 【Characteristics Suitable for Burial】 ■ Sand that has been washed and has low clay content ■ Dried in a rotary kiln, with a moisture content of less than 1% ■ Made from natural silica sand, with no additives and is harmless ■ No contamination with other impurities (such as asphalt or oil) ■ As it is dried sand used for hazardous material facilities, we pay careful attention to dryness and storage *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

Our company provides sand suitable for golf course greens through appropriate particle size management. It does not contain silt (fine particles), ensuring good drainage and preventing the sand from compacting. Additionally, it does not contain stones or gravel, so sand spreaders (topdressing machines) do not get clogged, and it does not damage the blades of lawn mowers. 【Features】 ■ Does not contain silt (fine particles) ■ Good drainage and prevents sand from compacting ■ Does not contain stones or gravel ■ Sand spreaders (topdressing machines) do not get clogged ■ Does not damage the blades of lawn mowers *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

Our company offers sand for artificial turf infill (infill sand) that creates a surface that is easy to run on and has good drainage. By spreading silica sand on artificial turf, the grass blades stand up more easily, improving cushioning and reducing strain on the legs and back. Additionally, the sand has high wear resistance and generates little fine dust, which means less frequent sand replacement is needed. 【Features】 ■ Improved cushioning ■ Reduced strain on the legs and back ■ Creates a surface that is easy to run on and has good drainage ■ High wear resistance and low fine dust generation ■ Less frequent sand replacement needed *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

We provide sand with customized granularity for exterior materials. Our constant pursuit has been to contribute to solving our customers' problems through sand and related technologies while being close to our customers. Although the issues that can be resolved by the material "sand," which is often behind the scenes, may be few, we are still promoting technological development to be of service to our customers. [Features] ■ For exterior wall materials such as extruded wall panels ■ Sand with granularity tailored to needs *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

We provide sand suitable for self-leveling materials (SL materials) by removing fine particles that reduce fluidity. The low level of impurities in the sand does not adversely affect the quality of the SL materials. For self-leveling materials that require fluidity, the sand used as a raw material is also crucial for maintaining fluidity. 【Features】 ■ Fine particles that reduce fluidity have been removed ■ Low level of impurities in the sand ■ Does not adversely affect the quality of SL materials *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

We offer high-quality sand without color variations for slate roofs. In addition to natural silica sand based on white and brown, we also provide black monochrome artificial sand (NE Sand). You can utilize the beautiful colors of the sand itself in landscape design. 【Products Available】 ■ Natural silica sand based on white and brown ■ Black monochrome artificial sand (NE Sand) *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

Our company provides silica sand with moderate silica content, which is used as aggregate in mortar. By incorporating our special artificial sand, NE Sand, as aggregate, we achieve high-strength mortar. We can offer a wide range of particle sizes (silica sand: No. 3 to No. 7, NE Sand: No. 4 to No. 7). 【Available particle sizes】 ■ Silica sand: No. 3 to No. 7 ■ NE Sand: No. 4 to No. 7 *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

We would like to introduce our "Alkaline Phenol Self-Hardening Molds." Since it does not contain nitrogen or sulfur, it does not adversely affect the structure of cast steel or cast iron. It can be molded using fine sand, and even without a coating, it achieves a good casting surface. This molding method has features not found in traditional sand molds. The combination of the alkaline phenol molding method and the highly crush-resistant Espal not only improves the yield of recycled materials but is also suitable for producing high-quality castings. 【Features】 ■ Does not contain nitrogen or sulfur ■ Does not adversely affect the structure of cast steel or cast iron ■ Can be molded using fine sand ■ Achieves a good casting surface even without a coating *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

Our company manufactures sand suitable for the furan mold by removing impurities such as clay and adjusting the particle size distribution. Furan self-hardening molds are one of the representative molding methods widely used in sand casting in Japan. Additionally, they exhibit high strength, have good fluidity of the mixed sand, and are easy to adjust the usable time. 【Features of Furan Molds】 ■ One of the representative molding methods in sand casting ■ Exhibits high strength ■ Good fluidity of mixed sand ■ Easy to adjust usable time ■ Hardens through a dehydration condensation reaction *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

We handle "casting aggregates/casting sand" for sand casting at our company. We offer a wide variety of sands, including silica sand, artificial sands like NE Sand, Sun Green, and Espal, as well as specialty sands like Chromite Sand, allowing us to meet our customers' needs. To improve the impact of crystalline silica dust from silica sand on the working environment, more companies are switching from silica sand to artificial sand. 【Products We Handle】 ■ Silica Sand ■ NE Sand (Artificial Sand) ■ Sun Green ■ Espal ■ Chromite Sand (Specialty Sand), etc. *For more details, please refer to the related links or feel free to contact us.

• Organic Natural Materials

We would like to introduce the "Water-Based Coating Drying Machine" that we handle. Unlike burner-type heating, electric heating has a quick startup time, resulting in a shorter waiting time before use and no unnecessary energy loss. Additionally, by making the size compact, it is easy to transport and install, and by using not only infrared heaters but also hot air, the drying time is further reduced. 【Features】 ■ Electric type with no open flame ■ Short waiting time before use with no unnecessary energy loss ■ Compact design for easy transport and installation ■ Infrared heater + hot air for reduced drying time *For more details, please refer to the PDF document or feel free to contact us.

• Drying Equipment

"Pitamold" is a sealing material that exhibits excellent adhesion in self-hardening molds, preventing leakage of molten metal from the mold joint surfaces. It is resistant to changes in temperature and humidity, allowing it to maintain sealing performance over long periods, making it suitable for year-round use. With minimal stickiness, it significantly contributes to improved work efficiency, and its white color makes it easy to recognize, which helps reduce work errors. 【Features】 ■ Excellent adhesion ■ Excellent storage properties ■ Minimal stickiness ■ Solvent-free type, so it has no irritating odor *For more details, please refer to the PDF document or feel free to contact us.

• glue

Sand is used in various applications, starting with industrial products, but our company is further exploring "what can be done with sand." We welcome any ideas, whether it's "I know of a way to use it!" or "Can it be used for this?"—anything that seems feasible or even a surprising thought is welcome. We are actively seeking innovative uses for sand! Please share your ideas with us. 【Examples of Sand Usage】 ■ Casting: Aggregate for molds ■ Glass and Ceramics: Glass tableware, heat-resistant glass ■ Building Materials: Wall materials, roofing materials, insulation materials, paint materials, roadbed materials ■ Steelmaking: Sliding nozzle sand for steelmaking ladles ■ Blasting: Paint removal blasting material ■ Others: Combustion aid for incinerators, etc. *For more details, please feel free to contact us.

• others

"Espal" is an artificial sand with a round shape and smooth particle surface. It is characterized by high fire resistance, low thermal expansion rate, and high thermal conductivity. Its hardness is also one of its features, with a Mohs hardness of 9 compared to 7 for silica sand. 【Features】 ■ Round shape with a smooth particle surface ■ High fire resistance and thermal conductivity ■ Low thermal expansion rate ■ Hard *For more details, please refer to the PDF document or feel free to contact us.

• others

"NE Sand" is an artificial sand with a rounded shape that has almost no adhesion of fine particles due to special mineral processing. It is characterized by a low thermal expansion rate. Its hardness is also one of its features, with a Mohs hardness of 7.5 compared to 7 for silica sand. The free silica content is less than 1%, resulting in extremely low dust generation during work. [Features] ■ Special mineral processing ■ Almost no adhesion of fine particles ■ Low thermal expansion rate ■ Hard ■ Extremely low dust generation during work *For more details, please refer to the PDF document or feel free to contact us.

• others