Sheet metal processing×ツボタテクニカ - List of Manufacturers, Suppliers, Companies and Products

Basic Knowledge of Sheet Metal Processing - Types of Sheet Metal Materials (1)

We will introduce basic knowledge of sheet metal processing.

Metal materials can be broadly divided into two categories. 1. Ferrous metals... iron, stainless steel, galvanized steel sheets, etc. 2. Non-ferrous metals... copper, copper alloy sheets, aluminum, aluminum alloy sheets, etc. Here, we will first introduce "ferrous materials," which are the most common. 1. Ferrous materials (1) Cold-rolled steel sheets (SPCC) Among the materials used for precision sheet metal, cold-rolled steel sheets (SPCC) are the most widely used and have good marketability. At Tsubota Technica, we mainly process steel sheets with a thickness of 0.5 to 3.2 mm. The size of the sheets is expressed as width × length × thickness, and the main dimensions are as follows. [Sizes... Common names] 3ft × 6ft ... Saburoku 4ft × 8ft ... Shihachi 5ft × 10ft ... Gotou By the way, the material symbols are defined by JIS standards, and the principles are as follows. Example: Cold-rolled steel sheets (SPCC) S... Material / Steel PC... Product name / Cold-rolled steel sheets C... Type / General use (To be continued)

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Basic Knowledge of Sheet Metal Processing - About Types of Sheet Metal Materials (2)

We will introduce the basic knowledge of sheet metal processing.

Metal materials can be broadly divided into two categories: 1. Ferrous metals... iron, stainless steel, galvanized steel sheets, etc. 2. Non-ferrous metals... copper, copper alloy sheets, aluminum, aluminum alloy sheets, etc. Here, we will introduce "stainless steel," which our company specializes in processing. 1. Ferrous materials (2) Stainless steel sheets These are made by adding chromium or a combination of chromium and nickel to low carbon steel, providing excellent corrosion resistance. Stainless steel sheets have higher hardness and tensile strength compared to soft steel, but they have poor thermal conductivity. The material symbol for stainless steel sheets is derived from the bold parts of Steel, Special Use, and Stainless, and is referred to as SUS (pronounced "suss"). By the way, the material symbols are specified by JIS standards, and the principles are as follows: Example: SUS304 (austenitic stainless steel) S... material / steel US... application / special use 304... type / classification number (continued)

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Basic Knowledge of Sheet Metal Processing - About Types of Sheet Metal Materials (3)

We will introduce the basic knowledge of sheet metal processing.

Sheet metal materials can be broadly divided into two categories. 1. Ferrous metals... iron, stainless steel, galvanized steel sheets, etc. 2. Non-ferrous metals... copper, copper alloy sheets, aluminum, aluminum alloy sheets, etc. Here, we will introduce non-ferrous metal materials. 2. Non-ferrous metals and non-metals Among non-ferrous metal materials, the most commonly used for sheet metal are copper, copper alloys, aluminum, and aluminum alloys. The reasons for this include that copper has excellent mechanical properties and corrosion resistance, while aluminum is a material with very good workability. By the way, the material designation for aluminum alloys is as follows. Example: A5052P A... material / aluminum 5052... alloy number P... shape / sheet

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Basic Knowledge of Sheet Metal Processing - Welding Processing (7)

We will introduce the basic knowledge of sheet metal processing.

"Welding processing" refers to the process of joining two or more metal parts. This page introduces the welding methods implemented at Tsubota Technica, specifically "stud welding" and "projection welding." ○ Stud Welding Studs or bosses are welded onto a flat plate. Specialized equipment is used for the studs, bosses, and welding machine. The welded studs are used to attach components, but due to the small welding area, the strength of the weld is not very high, making it suitable for fixing lighter items such as circuit boards. ○ Projection Welding The edges of sheet metal or the corners of nuts (using horned nuts) are pressed against the base material, and concentrated electrical current is passed through to melt and join them. This is also processed with specialized welding equipment. It can achieve greater strength than stud welding, making it suitable for welding large-diameter nuts that support adjusters or casters. Other processes such as brazing have also been successfully implemented, but they will not be covered here.

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Basic Knowledge of Sheet Metal Processing - Welding Processing (1)

We will introduce the basic knowledge of sheet metal processing.

"Welding processing" is one of the methods for joining two or more metal parts. It can be broadly classified into three categories: fusion welding methods, where metal is locally heated to a molten or semi-molten state and the molten parts are directly joined together or joined with the addition of filler material (such as welding rods); pressure welding methods, where heated metal is joined under pressure; and brazing methods, where a different material from the base metal is melted to join the parts. At Tsubota Technica, we mainly implement the following welding methods: ○ Arc welding 　・CO2 welding 　・TIG welding ○ Laser beam welding 　・YAG laser welding 　・Fiber laser welding ○ Spot welding ○ Stud welding ○ Projection welding ○ Brazing Details of each welding method will be introduced in "Basic Knowledge of Sheet Metal Processing - Welding Processing (2)" and beyond.

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Basic Knowledge of Sheet Metal Processing - Welding Processing (2)

We will introduce the basic knowledge of sheet metal processing.

"Welding processing" refers to the process of joining two or more metal parts. This page introduces "arc welding," one of the welding methods implemented at Tubota Technica. ○ Arc Welding An electrode is attached to the workpiece (referred to as the base material), and a large current is passed through it, generating an arc (discharge) between it and another electrode held in the other hand. The heat from this arc melts the metal to join them (only metals of the same type can be joined). A filler material, which is a metal, is added between the base materials being joined. This filler material is made of the same type of material as the base material and is in the form of a rod or wire. Depending on the specifications of the welding machine, the filler material may be fed manually by the operator or automatically supplied by the machine. The latter is referred to as semi-automatic welding. Arc welding is used in many welding points during the assembly of enclosures, starting with welding the edges of sheet metal at corners. At Tubota Technica, among the welding methods classified as arc welding, "CO2 welding" and "TIG welding" are mainly used. The "Basic Knowledge of Sheet Metal Processing - Welding Processing (3)" introduces the characteristics of these methods.

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Basic Knowledge of Sheet Metal Processing - Welding Processing (3)

We will introduce the basic knowledge of sheet metal processing.

"Welding processing" refers to the process of joining two or more metal parts together. This page introduces "CO2 welding" and "TIG welding," which are methods of welding implemented at Tsubota Technica. - CO2 Welding In arc welding, gas (shielding gas) is used to maintain the quality of the joint while stabilizing the arc. CO2 welding uses CO2 as this shielding gas. It results in deep penetration and strong fusion between the base materials. It is a semi-automatic welding process. It tends to produce spatter, which is welding debris (metal droplets that solidify when scattered during welding), and the appearance after welding can often be messy. The spatter needs to be ground off to clean it up. - TIG Welding This is an arc welding process that uses tungsten alloy for the welding electrode and argon as the shielding gas. The weld bead is beautiful, and it allows for welding of aluminum, which is not possible with CO2 welding. It is also suitable for welding other non-ferrous metals. Since it is not a semi-automatic process, both hands must be used during welding, requiring a certain level of skill. The gas is relatively expensive, resulting in higher costs compared to CO2 welding. Other welding methods will be introduced from section (4) onward.

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Basic Knowledge of Sheet Metal Processing - Welding Processing (4)

We will introduce the basic knowledge of sheet metal processing.

"Welding processing" refers to the process of joining two or more metal parts together. This page introduces "YAG laser welding," which is one of the welding methods implemented at Tubota Technica. ○ Laser Beam Welding Laser beams are directed onto the base material, and the energy from the laser is used to weld the material. Depending on the method of generating (oscillating) the laser light, it can be divided into several types. ・YAG Laser Welding This method uses a laser generated from a yttrium-aluminum-garnet (the initials YAG) alloy of yttrium and aluminum to perform the welding. It can weld stainless steel, which is prone to distortion from heat, with minimal impact, and it allows for deep penetration, resulting in a strong joint. No filler material is used; instead, the melted base materials are joined directly (this is called butt welding). There is no variation in the thickness of the weld seam. It is often used for welding stainless steel and electroplated steel sheets. In "Basic Knowledge of Sheet Metal Processing - Welding Processing (5)," the characteristics of fiber laser welding will be introduced.

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Basic Knowledge of Sheet Metal Processing - Welding Processing (5)

We will introduce the basic knowledge of sheet metal processing.

"Welding processing" refers to the process of joining two or more metal parts together. This page introduces "fiber laser welding," a type of "laser beam welding" conducted at Tubota Technica. ○ Laser Beam Welding Laser beams are directed onto the base material, melting it with their energy to perform the welding. Depending on the method used to generate (oscillate) the laser light, it can be categorized into several types. ・Fiber Laser Welding This type of laser can focus the beam diameter very narrowly. It can concentrate energy on a small area, making it possible to weld materials that are easy to melt but difficult to weld, such as aluminum and brass. Additionally, it can form a stable, narrow bead, and due to its fast processing speed and minimal distortion after welding, the finished product does not require any post-welding finishing. Tubota Technica operates three robots equipped with fiber laser welding machines, selecting them based on the size and shape of the workpieces. In "Basic Knowledge of Sheet Metal Processing - Welding Processing (6)," spot welding will be introduced.

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Basic Knowledge of Sheet Metal Processing - Welding Processing (6)

We will introduce the basic knowledge of sheet metal processing.

"Welding processing" refers to the process of joining two or more metal parts together. This page introduces "spot welding," one of the welding methods implemented at Tubota Technica. ○ Spot Welding In spot welding processing, a dedicated spot welding machine is used. The surfaces of the two plates to be joined are brought together and clamped with electrodes, allowing a large current to flow. The resistance during this process generates heat, melting the base material, and by applying pressure while the current flows, the contact surfaces of the base materials are joined. The time required for actual processing is short, making it very productive. However, it cannot be used when trying to join the edges of sheet metal (for example, at the corners of a box). It is often used when two plates need to be bonded face to face, such as when attaching small parts to the back of a cover. "Basic Knowledge of Sheet Metal Processing - Welding Processing (7)" will introduce stud welding and other methods.

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Sheet metal processing×ツボタテクニカ - List of Manufacturers, Suppliers, Companies and Products

Sheet metal processing Product List