瑞芳産業 List of Products and Services

Ruifang Industrial Co., Ltd. was established in 1963 and is a heat treatment processing company specializing in furnace brazing. We can handle the development and design stages of various industrial product parts all the way to mass production. We manufacture parts processing for automobiles, home appliances, power tools, machine tools, water heaters, and more. 【Business Description】 ■ Manufacturing of parts processing for automobiles, home appliances, power tools, machine tools, water heaters, etc. *For more details, please refer to our catalog or feel free to contact us.

• Other Auto Parts
• Other machine tools
• Power tools

At Ruifang Industrial Co., Ltd., we perform "soldering and heat treatment processing of iron, copper-based metals, and stainless steel" using "continuous non-oxidizing furnaces" and "continuous hydrogen furnaces." Because hydrogen gas has an extremely strong reducing effect, it can remove the oxide film on the surface of the metals to be soldered with just a slight change in atmosphere. It powerfully reduces not only the O2 in the atmosphere but also the oxide scale of the processing agents. Additionally, hydrogen enters the metal and causes embrittlement, resulting in a hardened and brilliant finish. 【Types of processing that can be done with this equipment】 ■ Copper soldering of iron-based substrates ■ Phosphor bronze soldering of copper-based and iron-based substrates ■ Bronze soldering of copper-based and iron-based substrates ■ Silver soldering of copper-based substrates ■ Phosphor copper soldering of copper-based substrates ■ Bright annealing of iron and copper ■ Other soldering of iron-based and copper-based substrates ■ Nickel soldering of stainless steel substrates ■ Copper soldering of stainless steel substrates ■ Bronze soldering of stainless steel substrates ■ Other soldering of stainless steel substrates ■ Solution heat treatment of austenitic stainless steel *For more detailed information, please feel free to contact us.

• Other machine tools
• Other processing machines
• Other surface treatment equipment

At Ruifang Industrial Co., Ltd., we have equipped ourselves with facilities tailored to the characteristics of various metals. We achieve better quality and cost with a variety of equipment. 【Equipment Introduction】 ■ Continuous Non-Oxidizing Furnace ■ Continuous Hydrogen Furnace ■ Heating Equipment ■ Press Machine ■ Welding Machine ■ Peripheral Equipment and more *For more detailed information, please feel free to contact us.

• Other machine tools
• Other processing machines
• Other surface treatment equipment

We would like to introduce the brazing process of Zuifang Industry, a heat treatment processing company that specializes mainly in furnace brazing. The determination of the material, shape, and quantity of the brazing filler metal to be assembled is carried out from the development stage, starting with "brazing filler metal assembly," as well as "spot welding," "TIG welding," and "furnace brazing." We undertake all processes associated with brazing. Please feel free to consult us. 【Process Introduction】 ■ Brazing filler metal assembly ■ Spot welding ■ TIG welding ■ Furnace brazing *For more details, please refer to the PDF materials or feel free to contact us.

• Welding Machine
• Other processing machines
• Processing Contract

Ruifang Industrial Co., Ltd. is a company that performs various brazing and heat treatment processes using continuous industrial furnaces. We have been engaged in brazing processes for automotive parts, which have strict quality standards, for over 30 years. Our services are also utilized in the processing of parts for home appliances, power tools, and machine tools. We have established a quality control system and obtained ISO 9001 certification. Our company has continuous hydrogen furnaces and continuous non-oxidizing furnaces, allowing us to use equipment tailored to the characteristics of various metals, aiming for a beautiful finish that satisfies our customers. We assist companies that are not satisfied with the functionality, durability, and aesthetic quality of their brazing and heat treatment processes. 【Features】 ● ISO 9001 certification obtained ● Prototype and test processing ● Brazing of iron and copper-based materials ● Brazing of stainless steel-based materials ● Selection of brazing materials ● Mass production *For more details, please download the PDF data or feel free to contact us.

• Processing Contract

In brazing stainless steel materials using a continuous hydrogen furnace, a filler metal with a lower melting point than the base material can be directly applied to the joint before heating. Therefore, even complex shapes and thin materials that are difficult to process with welding and other joining methods can be joined by adopting brazing. Solution heat treatment is also available. 【Features】 ● Joining of complex-shaped metals ● High joint strength ● Quality control certified by ISO9001 ● Test processing available ● Selection of filler metals 【Types of processing possible with this equipment】 ■ Nickel brazing of stainless steel base materials ■ Copper brazing of stainless steel base materials ■ Bronze brazing of stainless steel base materials ■ Other brazing of stainless steel base materials ■ Solution heat treatment of austenitic stainless steel *For more details, please download the PDF data or feel free to contact us.

• Processing Contract

In a continuous non-oxidizing furnace, brazing can primarily be performed on iron-based and copper-based base materials. Suitable filler materials are selected for the base materials to achieve a more beautiful and high-strength finish. When brazing in the furnace, reducing gases such as "hydrogen gas" and "DX gas," as well as inert gases like "nitrogen gas" and "argon gas," are used as the atmosphere inside the furnace. When iron oxide is heated in DX gas, hydrogen and carbon monoxide react with the iron oxide, resulting in a reduction reaction. Hydrogen and carbon monoxide are taken from the iron oxide, turning into water and carbon dioxide, and the iron oxide is reduced back to iron. (See image) By performing heat treatment in a sufficient reducing atmosphere, not only does wettability improve, allowing for good brazing and other processing, but it also prevents discoloration due to oxidation, resulting in shiny products. (See image) 【Types of processing possible with this equipment】 ■ Copper brazing of iron-based base materials ■ Phosphor bronze brazing of copper-based and iron-based base materials ■ Bronze brazing of copper-based and iron-based base materials ■ Silver brazing of copper-based base materials ■ Phosphor copper brazing of copper-based base materials ■ Bright annealing of iron and copper ■ Other brazing of iron-based and copper-based base materials *For more details, please download the PDF data or feel free to contact us.

• others

At Ruifang Industrial Co., Ltd., we perform brazing of iron-based substrates using a continuous non-oxidizing furnace. The brazing material is selected to be the most suitable for each substrate. When loading products into the furnace, they may be placed directly on a mesh belt as shown in the photo, or fixtures may be used. Brazing is performed using the method appropriate for each product. Of course, we ensure that the products have sufficient functionality and durability after brazing, and we are committed to refining our techniques to achieve a beautiful finish. If you are considering brazing for iron-based substrates, please feel free to contact us. We can join parts with complex shapes that are difficult to weld. We also conduct test processing. 【Flow to Mass Production】 - Production request - Testing - Prototyping - Production system planning - Process design - Fixture manufacturing - Mass production prototyping - Quality confirmation - Start of mass production - Mass production

• others

At Ruifang Industrial Co., Ltd., we thoroughly conduct "100% inspection" through visual confirmation before product shipment. We are committed to maintaining quality and preventing the shipment of defective products by inspecting all products, rather than just conducting sample checks. Additionally, for certain products, we also perform pressure testing in addition to visual inspection. 【Features】 - Brazing of iron-based base materials - Brazing of stainless steel base materials - Bright annealing of iron - Bright annealing of copper - Solution heat treatment of austenitic stainless steel

• others

When performing brazing, the way products are arranged and placed into the furnace can lead to differences in the final outcome. At Zuifang Industrial Co., Ltd., we manufacture optimal jigs for each product to ensure high-quality results. Please feel free to consult with us! 【Brazing and Heat Treatment Using Industrial Furnaces】 - Brazing of iron-based materials - Brazing of copper-based materials - Bright annealing of iron - Bright annealing of copper - Brazing of stainless steel-based materials

• Processing Contract

Currently, the types of solder specified by JIS include various options such as silver solder, phosphor bronze solder, gold solder, and nickel solder. By being well-versed in the correlation with the base material, melting points, soldering methods, and related usage conditions, one can effectively utilize each type of solder by selecting it appropriately to leverage its characteristics. - Confirm the purpose of the joint and choose a solder that matches the material and required properties of the base material. - Select a solder that is suitable for the soldering method. - Choose a solder shape that is appropriate for the soldering method. - Determine the necessary amount based on the gap at the soldering temperature. By keeping these points in mind, we will assist you in selecting the appropriate solder material for your products. We have included some types of solder in the image for your reference. For more detailed information, please feel free to contact us.

• Processing Contract

In brazing, by determining the appropriate "filler material," "gap management," and "joint shape" for the base material to be brazed, it is possible to achieve a very strong bonding strength. When joining with a filler material that is softer than the base material and pulling as shown in the left diagram, the lateral contraction of the filler is prevented by the hard base material, resulting in a force that pulls the filler outward at the joint (tri-axial stress state). Consequently, the filler becomes less prone to deformation, thereby increasing its strength. If the conditions are met, results can be obtained that lead to base material failure in tensile tests. *For more details, please download the PDF data or feel free to contact us.

• Processing Contract

Bright annealing refers to the process of treating products in a non-oxidizing atmosphere, which prevents the formation of oxide scale, allowing for the same metal surface as before annealing and eliminating the need for pickling. Generally, bright annealing is used when a mirror-like surface finish is required for decorative purposes, enabling the omission or reduction of polishing processes. At Ruifang Industrial Co., Ltd., we perform bright annealing of iron and copper using a continuous non-oxidizing furnace, in addition to brazing. *For more details, please download the PDF data or feel free to contact us.*

• Processing Contract