Ultra-fine tungsten core diamond wire (for semiconductor production)
D２５ Ｄ３０ Ｄ３５ Ｄ４０
Ultra-fine tungsten core diamond wire is a material for next-generation semiconductor production.
(Product Introduction) ●Full Name: Ultra-Fine Tungsten Core Diamond Wire ●Category: Cutting Tool ●Application: Diamond Multi-Wire Saw ●Compatibility: Multi-slicing processing of hard and brittle materials such as silicon, sapphire, magnetic neodymium iron, SiC, GaN, etc. ●Features: Compared to the current high-carbon steel core wire (standard: 35μm is the limit), tungsten (standard: 25μm and above) allows for high-tension, fine-diameter multi-slicing cutting, and the cutting surface is a beautiful mirror finish. (Product Specifications) ●Standards: Tungsten Diameter: 25, 30, 35, 40μm ●Model Numbers: D25, D30, D35, D40 ●Packaging: Standard length of 100km roll (can be rolled in lengths of 1km to 200km according to the user's reel shape) ●Weight of 100km roll: D25: 15kg, D30: 20kg, D35: 25kg, D40: 30kg (net weight of W: weight may vary due to Ni plating layer and D electrode layer) ◎Description: Core wire diameter: The wire diameter of high-carbon steel wire saw is about 35μm, which is the limit, but the wire diameter of W wire saw can be thinner with a low breakage rate, so W25 is also usable.
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basic information
Physical properties of W) Abbreviations: D = Diamond, W = Tungsten, Re = Rhenium, Ni = Nickel, (S) = Sample available - Specific gravity Sp: 19.3 g/cm³ (almost the same as gold) - Melting point: 3380°C (the highest among metals) - Mohs hardness: 7.5 - Boiling point: 5555°C - Thermal conductivity: 160 W/m·K (at 300 K) ● Strength) Tensile fracture strength: - D25: 3N approximately 300 gf - D30: 4N approximately 400 gf - D35: 5N approximately 500 gf - D40: 7N approximately 700 gf ◎ Comparison of physical properties with high carbon steel core wire) - Electrical resistivity: about half that of carbon steel - Fracture strength: over 1.2 times - Torsional rigidity: over 10 times - Young's modulus: 1.7 times - Elongation ratio: about 60% Chemical properties of W and D) ◎ W material: Tungsten W 99.4% + Rhenium Re 0.6% Alloy symbol: WRe 0.6 ● Reaction with O2: Oxidation begins or graphitization occurs for both W and D at 400 to 700°C (oxidation prevention and cooling measures are necessary) ○ Hazardous materials: No ○ Toxicity: None ○ D line quality standard: ASTM not yet available
Price information
(Price for a roll of 100 km length) - W25: 350,000 yen - W30: 390,000 yen - W35: 430,000 yen - W40: 500,000 yen Includes shipping and tax; customs duties are separate; terms are negotiable.
Price range
P3
Delivery Time
P4
Applications/Examples of results
Diamond Multi-Wire Saw ◎ Explanation of Electrical Resistivity: The diamond wire saw → fixes diamond powder around the core wire using electroplating or coating → the electrical resistivity of tungsten is about half that of carbon steel → the current capacity is about twice as much → from the diamond powder dispersed plating solution → a thick (diamond-holding nickel) electroplated layer can be formed on the outer diameter surface. ◎ Process of Fixing Diamond Powder: The Ni layer on the outer circumference of the tungsten wire is ferromagnetic, so → it is immersed in a type of flowing dispersion of diamond powder in nickel plating solution → forming a diamond powder electroplating + Ni plating layer → followed by a heat-fixing treatment. ◎ Measures for Oxidation Prevention and Cooling: - Oxidation Prevention: PSA Molecular Sieve Nitrogen Gas Generator (S) - Air Cooling: Spin Chamber Cold/Hot Separation Compressed Air Pipe (S) - Water Cooling: Peltier Element Cold/Hot Separation Semiconductor (S) Cautions for Use: Tungsten ultra-fine wire has a mysterious property that allows it to easily curl just by rubbing it with fingers → curling can cause kinks → while curling can be visually corrected by lightly heating with a flame, the strength of the corrected area will definitely decrease → therefore, curls that form at the ends should be cut off → care should be taken not to form curls in the middle section → if you need to bend the wire path, always use a wire path roller to avoid resistance.
Detailed information
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Diamond wire structure
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Diamond wire saw operating principle
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Multi-wire slicing of silicon ingots using a diamond multi-wire saw.
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Slurry cutting and wire saw cutting
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Diamond Wire Saw Image Analysis Device
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100km roll of wire
Line up（4）
| Model number | overview |
|---|---|
| Ｄ２５ | Weight of 100 km roll: D25: 15 kg (This is the net weight: Weight may vary due to the Ni plating layer and D electrodeposition layer) |
| Ｄ３０ | Weight of 100 km roll: ・D30: 20 kg (This is the net weight: the weight may vary due to the Ni plating layer and D electrodeposition layer) |
| Ｄ３５ | Weight of 100 km roll: ・D35: 25 kg (This is the net weight: the weight may vary due to the Ni plating layer and D electrodeposition layer) |
| Ｄ４０ | Weight of 100 km roll length: ・W40: 30 kg (This is the net weight of W: weight may vary due to the Ni plating layer and D electrodeposition layer) |
catalog（1）
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Company information
アソシエイト トレーディング 土屋 裕 v09018951120 qq3508274141 ttt@zd.wakwak.com
Associate Trading Co., Ltd. will produce products based on the following policies: 1. As a trading company, we generally do not hold product inventory. 2. The transaction conditions are: advanced payment and, depending on the item, a lead time of approximately 40 days for made-to-order production. 3. Once the order is confirmed, we will issue an order confirmation. 4. Deliveries will be made in installments whenever possible, allowing users to see and try the products themselves while confirming the quality during delivery. 5. Therefore, we ask users to set delivery dates that allow for as much flexibility as possible for partial deliveries. 6. For users with ongoing transactions, we generally ask for your understanding regarding lead time stabilization through procurement from multiple companies. 7. In the unlikely event that issues arise with quality, lead time, cost, or transportation, we can respond flexibly through procurement from multiple companies. 8. Our company directly trades with approximately 500 factories in China, so you can trust us to handle your needs with confidence.
