Application of vacuum sintering furnace in titanium alloy

2026-02-26 09:56

1. Properties and Applications of Titanium Alloys

Titanium alloys are alloys composed of titanium as the base material, with added elements such as aluminum, vanadium, and molybdenum. They possess higher mechanical strength and excellent heat resistance than pure titanium, while maintaining low density and extremely strong corrosion resistance. They can withstand extreme temperatures and high pressure environments, making them core materials for aerospace engines, submarine structures, and high-performance racing car components.

2. The Mechanism of Vacuum Sintering in Powder Metallurgy

Vacuum sintering is a key step in titanium alloy powder metallurgy, its main function being to physically bond and densify metal powder particles through a high-temperature and vacuum environment. At temperatures close to the melting point, titanium alloy powder particles gradually shrink and close pores through mechanisms such as atomic diffusion, viscous flow, and evaporation-condensation, thereby transforming the loose compact into a high-density solid material.

3. Specific Temperature Profiles and Steps for Titanium Sintering

The following are the specific steps for vacuum sintering of titanium alloys:

1. Initial heating: Raise the temperature from room temperature to 450℃ and hold for 80 minutes.
2. Preheating stage: Raise the temperature from 450℃ to 900℃ and hold for 60 minutes.
3. High-temperature sintering: Raise the temperature from 900℃ to 1300℃ and hold for 180 minutes.
4. Natural cooling: Allow the temperature to cool naturally from 1300℃ to 800℃.

4. Technical Specifications of SIMUWU Sintering Equipment

SIMUWU‘s vacuum sintering furnace process library includes all titanium alloy sintering processes, equipped with a Siemens S7-1200 PLC, and runs programs perfectly under temperature uniformity of ±5℃. The specific parameters of the equipment are as follows:

Furnace Type	Horizontal type,single chamber, internal recycle.
Loading method	Front Loading
Max. Loading weight	100 kg(including jig)
Ultimate vacuum (cold empty furnace condition, after drying and degassing)	Better than 6.7×10-4 Pa
Working vacuum	6.7 x 10-3Pa
Time to working vacuum	≤30min(After preheating the diffusion pump, empty cold furnace condition)
Power supply	3 phase, 380V(±5%); 50Hz
Pressure rising rate(cold empty furnace condition)	≤0.67Pa/h
Max. Loading size	300(W)X300(H)X500(L)mm
Max.design temperature	1300℃
Working temperature	1200（℃）
Temperature uniformity	5 points temp testing ±5℃(standard AMS 2750E)
Temperature control accuracy (℃ )	S Type thermocouple≤±1
Temperature controller accuracy(℃ )	≤0.1
Quantity of heating zones	1-zone temperature control
Empty furnace heating rate	0~25℃ /min(speed adjustable)
Workpiece temperature time for heating	≤60min
Temperature uniformity(Vacuum, empty furnace, 500-1100℃)	±5℃
Temperature control mode	Intelligent programmable temperature controller for automatic temperature control
Control mode	PLC automatic / manual control interlock protection
Max charging pressure	＜2bar
Cooling method	Air/Natural cooling
Cooling gas	N2/Ar (purity: 99.99% or 99.999%)
Partial pressure	50-1000Pa manual and automatic pressure control
Operate method	manual or automatic control
Equipment color	Customized