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