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Vacuum Diffusion Welding Furnace

Description
ACME vacuum furnace is VDP standard type brazing and diffusion furnace mainly used for diffusion treating tubing blade, falcon head, missile fuse process in aerospace and boat area. Diffusion welding is widely used for diffusion welding in different kinds of metal materials, also for different metal and ceramic materials and non-metal material diffusion welding.

Technical Features
1. The hydraulic press device and the hot zone consist of the whole diffusion brazing furnace, the pressure loading system equipped with 0.001 class pressure sensor which is made in Germany to ensure the accurate and 10um class high accurate displace met sensor to ensure the displacement. And the independent pressure makeup system to ensure the pressure of the diffusion pump accurate.
2.Professional motive seal structure to make sure no leakage during the ram displacement in a long period.
3.Ram material can be isostatic pressing graphite or TZM alloy.
4.The surface flatness of the ram accuracy can be ±5um.
5.The pressure field relies on the 3D finite element technical to simulate the deformation during the pressure loading on the upper ram or bottom ram. With enough safety reservation of the ram thickness after the calculation ensure there is no deformation on the ram in high temperature and the loading base flatness of the product.
6.The ram is easy to remove and install, if without pressure, it can be used as a brazing furnace with multiple function.
With 2 bar- 15 bar gas system for external circle fast cooling, ensure the product cooling down quickly and efficiently.

Specification of Vacuum Diffusion Welding Furnace
Parameter\Model VDP-446 VDP-556 VDP-666 VDP-776 VDP-886 VDP-996
Effective hot zone size W×H×L (mm) 400 × 400 × 600 500 × 500 × 700 600 × 600 × 900 700 × 700 × 600 800 × 800 × 600 900 × 900 × 600
Heating power (kW) 75 90 150 270 360 540
Max. temperature (°C) 1300/1700/2300 1300/1700/2300 1300/1700/2300 1300/1700/2300 1300/1700/2300 1300/1700/2300
Loading pressure (T) 30-200 30-200 30-200 30-200 30-200 30-200
Temperature Uniformity (°C) ±5 ±5 ±5 ±5 ±5 ±5
Vacuum degree (Pa) 4 × 10-3/6 × 10-4 4 × 10-3/6 × 10-4 4 × 10-3/6 × 10-4 4 × 10-3/6 × 10-4 4 × 10-3/6 × 10-4 4 × 10-3/6 × 10-4
Pressure increasing rate (Pa/h) ≤0.26 ≤0.26 ≤0.26 ≤0.26 ≤0.26 ≤0.26
≤0.65 ≤0.65 ≤0.65 ≤0.65 ≤0.65 ≤0.65
No. of ram Single/Double Single/Double Single/Double Single/Double Single/Double Single/Double
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