Weshare Electrical Laminated Wood: A Professional Insulation & Support Material for High-Voltage Equipment
As a professional manufacturer and supplier of electrical insulation materials, Weshare is committed to providing high-quality electrical laminated wood products that meet global industry standards. Our electrical laminated wood is a premium insulating and supporting material widely used in high-voltage electrical equipment such as transformers and instrument transformers. It is processed through advanced technology and strict quality control, with excellent mechanical properties, electrical insulation performance and processability, making it an ideal alternative to steel plates, insulation pressboards and epoxy-based materials in many applications.
1. Product Overview
Weshare electrical laminated wood is made of high-quality hardwoods such as birch, ash and manchurian ash. Through a series of sophisticated processes including cooking, rotary cutting, drying, gluing with special insulating adhesive, and high-temperature and high-pressure pressing, it forms a dense and uniform laminated structure. Unlike ordinary laminated wood, our products adopt advanced production technology to effectively solve the defects of uneven density, inconsistent stress and internal air bubbles, ensuring stable and reliable performance in long-term use.
Our product range covers standard electrical laminated wood panels, scarf-joint electrical laminated wood, X-shape transformer pressure rings, electrical laminated wood sticks and other finished products, which can fully meet the diverse needs of different high-voltage equipment and project scenarios.
2. Core Production Process
Weshare adheres to strict production standards and sophisticated process control to ensure the high quality of each batch of electrical laminated wood. The detailed production process is as follows:
Raw Material Selection & Pretreatment: We select high-quality birch, ash and other hardwoods as raw materials, which are strictly inspected to avoid defects such as decay, insect holes and dead knots. The raw materials are cooked to soften the wood fibers, then rotary-cut into uniform veneers, and dried to control the moisture content within the standard range (≤6%), laying a solid foundation for the subsequent process.
Veneer Processing & Scarf-Joint: The dried veneers are ground and processed by advanced domestic veneer grinding and lengthening units. For scarf-joint electrical laminated wood, the veneers are joined at a 7-degree angle to achieve full veneer integration, which effectively improves the mechanical strength and electrical performance of the product and makes up for the defects of ordinary overlapping veneers.
Gluing & Pressing: The processed veneers are coated with special insulating adhesive, and then stacked according to the requirement that the fiber directions of adjacent layers are perpendicular to each other. For X-shape transformer pressure rings, a special process is adopted to make the fiber direction of each point along the radius form an X-shape, and the circular blank is formed by one-time pressing, which ensures the uniformity of the bending strength of the pressure ring.
Post-Processing & Quality Inspection: The pressed products are subjected to post-processing such as trimming and polishing to ensure flatness and dimensional accuracy. Each batch of products undergoes comprehensive performance testing in our professional laboratory, including appearance quality, density, moisture content, mechanical strength and electrical performance. Only products that meet the standards are allowed to leave the factory.
3. Key Performance Indicators & Advantages
Backed by advanced production technology and strict quality control, Weshare electrical laminated wood has excellent comprehensive performance, and all technical indicators meet the industry standards. Its core advantages are as follows:
Excellent Mechanical Properties: It has moderate specific gravity, high mechanical strength, and excellent flexural strength and shear strength. For X-shape pressure rings with density ≥1.1g/cm³, the flexural strength along the radius direction can reach more than 120MPa, and the vertical layer flexural strength of panels can reach ≥90MPa, which can withstand large mechanical pressure and maintain structural integrity.
Superior Electrical Insulation Performance: The vertical layer electrical strength in (90±2)°C oil is more than 10kV/mm, and the parallel layer breakdown voltage is ≥50kV. Its dielectric constant is close to that of transformer oil, forming a reasonable insulation match, which can be used in transformer oil at 105°C for a long time and effectively isolate high-voltage circuits.
Good Processability & Stability: It is easy to vacuum dry and mechanical processing, and can be accurately cut, punched and formed into various complex components. The shrinkage rate after drying is ≤0.5%, which is not easy to warp or crack, and has good dimensional stability. At the same time, it has excellent oil absorption (≥15% for panels), which is fully compatible with transformer oil.
High Quality & Reliability: We adopt high-precision testing equipment and high-sensitivity metal detectors to strictly control product quality. The product has no bubbles, cracks, pollution and other defects, and the number of patches per square meter on the surface is ≤3. It has passed ISO9001 international quality management system certification and US FM registration, ensuring stable and reliable quality.
Cost-Effective & Environmentally Friendly: It can replace steel plates, insulation pressboards, epoxy paper boards and other materials, reducing the weight and material cost of electrical equipment. The raw materials are natural hardwoods, which are environmentally friendly and renewable, in line with the concept of green development.
4. Main Applications
With its excellent comprehensive performance, Weshare electrical laminated wood is widely used in various high-voltage electrical fields, and is an indispensable insulating and supporting material for power equipment. Its main applications are as follows:
Power Transformers & Instrument Transformers: It is widely used in oil-immersed transformers to make upper and lower pressure plates, lead support beams, iron core spacers and other parts, and in instrument transformers to make clamps, which plays a key role in insulation and support.
High-Voltage Electrical Components: Used in high-voltage switchgear, high-voltage distribution cabinets and other equipment as insulating liners, separators and structural substrates, ensuring the safe operation of high-voltage components.
Transformer Pressure Rings: Our patented X-shape one-time pressing transformer pressure ring (Patent No.: ZL 021 16076.7) is a key insulating component in transformers, with uniform flexural strength along the radius direction, which can effectively overcome the electric force of transformer windings and ensure the safe operation of transformers.
Other High-Voltage Fields: It is also used in rail transit traction electrical systems, new energy power generation supporting equipment and other fields, adapting to harsh operating environments and meeting high-standard insulation and support needs.
5. Product Specifications & Storage Requirements
5.1 Product Specifications
Panel Specifications: Maximum size (length × width × thickness): 4000×3000×120mm; Common specifications: 3000×1500×(10-120)mm, 2400×2000×(10-120)mm. The thickness tolerance ranges from ±1.4mm to ±4.0mm according to different nominal thicknesses.
Ring Specifications: Maximum diameter of X-shape pressure ring: 3000mm; The diameter tolerance ranges from ±1.0mm to ±3.0mm according to different nominal diameters.
Customization: We can provide custom processing services according to customer requirements, including non-standard sizes, thicknesses and special-shaped components, to meet the unique needs of different projects.
5.2 Packaging & Storage
Packaging: Packed in wooden crates, wooden framed cases or other materials with sufficient strength lined with moisture-proof materials, and the gross weight of each package shall not exceed 3000kg.
Storage: The products should be stored in a clean and dry room with a temperature not exceeding 40°C, laid flat on a base plate at least 50mm above the ground, away from fire sources and heat sources, and protected from moisture to avoid affecting product performance.
6. Weshare's Commitment
Weshare has advanced production equipment, including three large-format hot presses with a maximum single press pressure of 10,000 tons, and a professional quality inspection center equipped with high-precision testing equipment. We adhere to the concept of "focusing on customers and casting high-quality brands with integrity", and are committed to providing first-class electrical laminated wood products and services for the transformer industry and other high-voltage electrical fields. Our products are sold all over the world and have established good supply and demand relationships with well-known enterprises such as Siemens, ABB and Toshiba, winning wide praise from customers.
Choosing Weshare electrical laminated wood means choosing reliability, quality and professionalism. We will continue to innovate and improve, providing more high-quality and cost-effective insulation materials for the development of the global high-voltage electrical industry.