Laminated Densified Wood Supplied to Turkey for Transformer Insulation
A customer from Turkey contacted Chengrui for laminated densified wood used in transformer insulation parts.
The customer was not looking for ordinary plywood or general industrial wood board. Their application required transformer-grade laminated densified wood that could be machined into insulation components and used inside oil-immersed transformer structures.
The parts discussed included support blocks, spacer blocks, pressure-related insulation parts and other drawing-based laminated wood components.
For this type of project, the key point is not only the material name. The customer also needed to confirm the thickness, machining method, dimensional tolerance, edge finish, oil-immersed transformer application and export packing.
Customer Background
The customer is involved in transformer manufacturing and transformer maintenance work in Turkey.
In their production process, they use several types of solid insulation materials, including transformer pressboard, laminated wood, insulation paper and machined insulation components.
For some insulation positions, pressboard is suitable. But for areas that need stronger mechanical support, laminated densified wood is often a better choice.
The customer needed a supplier who could support not only sheet material, but also machining discussion based on drawings.
Product Supplied
| Item | Description |
| Product | Laminated Densified Wood |
| Application | Transformer insulation and structural support parts |
| Transformer Type | Oil-immersed transformers |
| Thickness | 20~50mm |
| Typical Parts | Support blocks, spacer blocks, pressure parts, insulation pads and structural support parts |
| Destination | Turkey |
Laminated densified wood is used in transformer insulation systems where the part needs to provide both electrical insulation and mechanical strength.
It is different from ordinary wood-based board. Transformer laminated densified wood is made for insulation structures where dimensional stability, compressive strength and oil-immersed transformer compatibility are important.
Why Need Laminated Densified Wood
In an oil-immersed transformer, different insulation positions require different materials.
Transformer pressboard is widely used for barriers, cylinders, oil duct strips and general insulation components. However, some parts must carry more mechanical load or provide stronger support during assembly and operation.
For these positions, laminated densified wood is often selected.
The Turkey customer considered laminated densified wood because it can provide:
mechanical support inside transformer structures;
electrical insulation between metal parts;
good machinability for custom parts;
stable performance in oil-immersed transformer applications;
better load-bearing ability than many paper-based insulation components;drawing-based processing for transformer assembly.
The customer planned to use the material for parts where ordinary pressboard was not the best option.
Main Applications
1. Transformer Support Blocks
Support blocks are common laminated wood components in transformer insulation structures.
They are used to support winding or clamping structures while maintaining electrical insulation distance.
For this application, the customer needed material that could be machined accurately and keep good strength after cutting and drilling.
2. Spacer Blocks
Laminated densified wood can also be processed into spacer blocks.
These blocks help maintain clearance between transformer parts and support the internal structure during assembly.
3. Pressure-Related Insulation Parts
Some transformer structures require laminated wood parts for winding end support, pressure distribution or clamping support.
These parts may require holes, slots, chamfers, arcs or special shapes according to transformer drawings.
4. Custom Machined Laminated Wood Parts
Many transformer customers do not only buy laminated densified wood sheets. They often need finished or semi-finished insulation parts.
Machining and Quality Control
Laminated densified wood is a layered insulation material, so machining quality matters.
Poor cutting or drilling may cause edge damage, delamination or fitting problems, especially when the part has small holes, narrow slots or holes close to the edge.
Chengrui checked the machining details before production and arranged inspection before packing.
For custom transformer insulation components, this step is important because even a small dimensional error may create assembly trouble at the customer's workshop.
Packing and Shipment to Turkey
Laminated densified wood sheets and machined parts need proper protection during export shipment.
For shipment to Turkey, Chengrui recommended packing that could protect the material from moisture, impact and deformation.
Packing points included carton or wooden case packing according to quantity, surface protection, edge protection, moisture protection, clear product labels and pallet packing for heavier shipments etc.
Laminated Densified Wood vs Transformer Pressboard
Some buyers ask whether laminated densified wood can be replaced by transformer pressboard.
The answer depends on the application.
| Item | Laminated Densified Wood | Transformer Pressboard |
| Main Function | Mechanical support + electrical insulation | Electrical insulation + moderate support |
| Structure | Laminated and densified wood-based insulation material | Cellulose pressboard |
| Mechanical Strength | Higher | Lower than laminated densified wood |
| Common Use | Support blocks, pressure parts, structural insulation pieces | Barriers, cylinders, strips, spacers, washers |
Both materials are used in transformer insulation systems, but they are not used in the same positions.
If the part mainly needs rigid mechanical support, laminated densified wood may be more suitable.
If the part mainly needs paper-based insulation barrier, oil duct structure or winding insulation component, transformer pressboard may be selected.
Related Transformer Insulation Materials
Chengrui also supplies related transformer insulation materials and components, including:
Pressboard Strips for Oil Duct
Transformer Pressboard Cylinders
Thermally Upgraded Diamond Dotted Paper
FAQ
Q1: Can Chengrui supply laminated densified wood to Turkey?
A: Yes. Chengrui can supply laminated densified wood sheets, cut pieces and machined transformer insulation parts to Turkey according to customer requirements.
Q2: What is laminated densified wood used for in transformers?
A: It is used for transformer support blocks, spacer blocks, pressure parts, insulation pads and other structural insulation components in oil-immersed transformers.
Q3: Is laminated densified wood the same as ordinary plywood?
A: No. Laminated densified wood for transformers is an electrical insulation material. It is different from ordinary plywood or general industrial wood board.
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