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| #Name | Australian Standard Electrically Insulated Laminated Wood |
| #Model number | Yamaz-0612 |
| #Base Material | Wood Veneer |
| #Matrix | Phenolic, Epoxy |
| #Machines Parts | Coil Supporting platforms, rings and segments. |
| #Thickness | 6 to 150 mm |
| #Rectangular Boards Sheet Size | 1220 x 2440 mm 1525 x 3050 mm 1860 x 3660 mm |
| #Square Boards Sheet Size | 1220 x 1220 mm 1525 x 1525 mm 1830 x 1830 mm |
| #Long Beam Size | 600 x 3750 mm |
| #Cut sizes | parts to customer requirements. |
| Standard Specification | Standard thickness |
| 3000*2000(mm) | 10~120(mm) |
| 3000*1500(mm) | 10~120(mm) |
| 2400*2000(mm) | 10~120(mm) |
| 2400*1200(mm) | 10~120(mm) |
| 2000*2000(mm) | 10~120(mm) |
| Normal Thickness | Distance of points on the veneer face from light weight straight ruler | |
| 500 straight ruler | 1000 straight ruler | |
| ≤15 | 2.0 | 4.0 |
| >15…≤25 | 1.5 | 3.0 |
| >25…≤60 | 1.0 | 2.0 |
| >60 | 1.0 | 1.0 |
| Normal Thickness | Distance of points on the veneer face from light weight straight ruler | |
| 500 straight ruler | 1000 straight ruler | |
| ≤15 | 2.5 | 6.0 |
| >15…≤25 | 2.0 | 4.0 |
| >25…≤60 | 1.5 | 2.0 |
| >60 | 1.0 | 1.5 |
| Item | Allowed Range |
| Swelling | Not Allowed |
| Cracking | |
| Dead knot | |
| Foreign-body adhering | |
| Insect hole | |
| Rot | |
| Contamination | |
| Bruising | A few allowed,not effect in usage |
| Impression | |
| Color-odds and Splash | |
| Patches per sq.m.on surtace | ≤3 |
| Capability | Unit | Model | ||||||||||||||
Veneers technique target |
Rings technique target |
|||||||||||||||
| P3B | C1B | C2B | C3B | C4B | T2B | T4B | ||||||||||
| Appearance Density | g/cm³ | 1.1-1.2 | 0.7-0.9 | 09-1.1 | 1.1-1.2 | 1.2-1.3 | 0.9-1.1 | 1.2-1.3 | ||||||||
| Moisture | % | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | ||||||||
| Vertical Layer Direction Flexural Strength |
Direction A | MPa |
≥150 |
≥45 |
≥55 |
≥65 |
≥80 |
>1000mm Diameter >1000mm |
≥100 | ≥140 | ||||||
| Direction B | ≤1000mm Diameter ≤1000mm |
≥90 | ≥125 | |||||||||||||
| Vertical Laver Direction Flexural Modulus of Elasticity | Direction A | GPa |
≥14 | ≥4.5 |
≥6 |
≥8 |
≥9 |
≥10 |
≥13 |
|||||||
| Direction B | - | |||||||||||||||
| (20MPaCompressibility (Below 20MPa) |
c | % |
≤3 | ≤5 | ≤4 | ≤3 | ≤2.5 | ≤5 | ≤4 | |||||||
| Crev | ≥70 | ≥70 | ≥70 | ≥70 | ≥70 | ≥70 | ≥70 | |||||||||
() Impact Strength (Side Test) |
Direction A | KJ/ |
≥35 |
≥6 |
≥10 |
≥13 |
≥15 |
≥25 |
≥35 |
|||||||
| Direction B | - | |||||||||||||||
Shear Strength |
MPa | ≥8 | ≥5 | ≥7 | ≥8 | ≥9 | ≥7 | ≥9 | ||||||||
(90±2)ºC Vertical Layer Direction Electric Strength |
KV/ mm |
≥11 | ≥9 | ≥10 | ≥11 | ≥2 | ≥10 | ≥10 | ||||||||
(90±2)ºC Parallel layer Direction Puncture Voltage |
KV | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ||||||||
| Shrinkage After Dried | Direction A | % |
≤0.2 ≤0.5 ≤3 |
≤0.3 ≤0.3 ≤3 |
≤0.3 ≤0.3 ≤3 |
≤0.3 ≤0.3 ≤3 |
≤0.3 ≤0.3 ≤3 |
Girth | ≤0.5 | ≤0.5 | ||||||
| Direction B | Thickness | ≤3 | ≤3 | |||||||||||||
| Thickness | ||||||||||||||||
| Oil Absorption | % | ≥8 | ≥20 | ≥15 | ≥8 | ≥5 | ≥15 | ≥5 | ||||||||
(△tanδ) Contamination to Liquid Dielectric |
_ | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 | ||||||||
| Normal Thickness | Tolerance |
| ≤10 | ±1.4 |
| >10…≤15 | ±1.6 |
| >15…≤20 | ±1.8 |
| >20…≤25 | ±2.0 |
| >25…≤30 | ±2.2 |
| >30…≤40 | ±2.6 |
| >40…≤60 | ±3.0 |
| >60…≤100 | ±4.0 |
| >100…≤150 | ±4.0 |
| Length and Width | Tolerance |
| >100 ... ≤250 | ±0.8 |
| >250 ... ≤500 | ±1.0 |
| >500 ... ≤1000 | ±2.0 |
| >1000 ...≤2000 | ±3.0 |
| >2000 | ±4.0 |
| Normal Diameter | Tolerance |
| >250 ... ≤500 | ±1.0 |
| >500 ... ≤1000 | ±2.0 |
| >1000 ...≤2000 | ±3.0 |
| >2000 | ±4.0 |
Process method for producing high-strength electrical laminated wood:
1. For log sorting, select southwestern birch, mountain cherry, or other neutral hard wood with a diameter of more than 40cm and cut it into sections according to the finished product specifications;
2. Steaming: Soak the wood segments in water for 48 hours, then peel and remove the mud and sand, heat and cook to 90--100ºC, the heating rate is 3-5ºC/hour, naturally cool to 80ºC, and keep warm for 24-36 hours;
3. Rotary cutting: cut into veneers according to the thickness of 0.5--1.8mm;
4. Drying and finishing, steam drying at 100-130ºC for 15-20 minutes to remove scars and decayed parts, repair and splice into veneers of a certain specification; it is characterized by using 410 epoxy phenolic resin as the adhesive, and then After the following process
5. Dry the glue on the veneer. After finishing the veneer, the long and short core boards are evenly glued with a glue coating amount of 220--300g/m2, and let it dry at a temperature of 60-80ºC for 15-20 minutes. Control the volatile matter content at 1-2% (weight percent). During this process, the drying temperature is too low or the drying time is too short, the amount of volatile matter will not be reduced much, and the dielectric loss of the finished product will increase, affecting the mechanical and electrical properties of the laminate. There may even be "blasting" delamination resulting in waste products. However, if the drying temperature is too high or the drying time is too long, it is easy to cause the adhesive to be pre-cured and bonding cannot be performed;
6. The diaphragm assembly is hot-pressed, and a high-temperature resistant film, such as polypropylene or polyester film, is used between the slab and the backing plate to separate the slab and the backing plate to prevent impurities on the backing plate from interfering with the layer. To prevent contamination on the surface of pressed wood, improve the appearance quality of the finished product, increase the creepage distance, and ensure the good insulation performance of the product, assemble the blank according to a compression rate of 20-25%, and conduct the preheating stage of the hot pressed laminate according to the following stages. The temperature is 70-70 80ºC unit pressure 25kg/cm2 time 1 minute/mm (finished product thickness) hot pressing stage temperature 120-130ºC unit pressure 60kg/cm2 time 3 minutes/mm (finished product thickness) cooling stage turn off the steam and cool down naturally for 1-2 hours. After cooling with cold water for 2-3 hours, slowly reduce the pressure and remove the board;
7. Final treatment: After the hot-pressed semi-finished product is naturally cooled and finalized for 36-48 hours, it is then subjected to sawing, filling, surface sanding and other treatments to obtain high-strength electrical laminated wood products.
Finished high-strength electrically laminated wood products undergo metal detection before being packaged and shipped.
Electrical laminated wood has the characteristics of easy removal of internal gas and moisture, high oil absorption rate, easy impregnation, easy processing, and low cost. Its dielectric constant is close to that of transformer oil and has good compatibility with transformer oil. Electrical laminated wood is suitable for manufacturing insulating structural parts and has great promotion value in the transformer industry.
Shouguang Yamazon Home Materials Co., Ltd. was established in 2020, with a factory area of 15,000 square meters. It is located at No. 300, Yuanfeng Street, Shengcheng Street, Shouguang City, Shandong Province. The company focuses on the production and processing of various types of office furniture, home furniture, plywood and glulam beams, as well as furniture customization services. We can undertake the processing of engineering furniture and wood according to drawings. The products cover various types of furniture such as cabinets, bathroom cabinets, computer tables, makeup tables, coffee tables, beds, etc. At the same time, the company relies on the abundant local aluminum and steel supply chain advantages to vigorously develop the production, processing and sales of aluminum alloy profiles, aluminum alloy die-casting parts and mobile office container houses. Aluminum alloy is widely used and can be used in the production and processing of power supply casings, model manufacturing, sports equipment, door and window processing, etc. There are many local aluminum product factories, which provide a complete production and supply chain from raw materials to die-casting manufacturing to surface painting, oxidation and coloring of aluminum products. Has strong OEM customization capabilities. At the same time, the local area is also the production base for large and small mobile office container houses. It has a complete industrial chain of steel structure design, exterior wall insulation, interior decoration, etc., with high quality and low price.
Our advantage lies in understanding the production and processing technology of these products. Relying on the complete local product production ecological chain, we can choose different processing factories to integrate certain customized products according to customer needs and ensure the best quality. , reduce the cost of each production process, verify the quality of the product, and ensure the quality inspection of the product before leaving the factory and the punctuality of the delivery date to the greatest extent. We welcome overseas customers to discuss cooperation and seek common development.
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