Welcome JiangSu BTMMF Advanced Materials Science & Technology CO.,LTD!
JiangSu BTMMF Advanced Materials Science & Technology CO.,LTD JiangSu BTMMF Advanced Materials Science & Technology CO.,LTD
Main Products:Tungsten electrode | Sapphire crystal growth furnace thermal field | Molybdenum wire | Molybdenum and tungsten products | Welding material

Add:Yuduo Industrial Zone, Jiangyan District, Taizhou
P.C.:225509
Tel:+86-523-88644058
Fax:+86-523-88645668
E-mail:sale@
Website:www.

 

PRODUCTS
Tungsten slice
Tungsten slice

Sapphire Dan Changjing furnace thermal field with a tungsten film: After deformation reaches more than 60% of the rolling process, the density of tungsten plate is substantially close to the theoretical density tungsten. Therefore, it has high strength, high temperature uniformity and excellent creep resistance within the organization. Sputtering targets, which are widely used in the production of sapphire crystal growth furnace cover, the vacuum furnace heating tape, connectors, etc. used in ion plating, evaporation of tungsten boat and other products.
First, the physical and chemical properties of the product:
1, purity: W≥99.95%;
2, density: ≥19.1g / cm3;
3, flatness: ≤2%;
4, the coefficient of thermal expansion (0-1600 ℃): 4.98 × 10-6
5, the yield strength (2080 ℃): 25MPa
Second, product dimensions and tolerances

Thickness
Thickness Tolerance
Width
Width Tolerance
Length
Length Tolerance
Availability
<0.2
±0.02
10~150
±2
500
±2
Cold Rolling
0.3
±0.03
10~250
±2
500
±2
0.4
±0.04
10~250
±2
500
±2
0.5
±0.05
10~300
±2
500
±2
0.8
±0.07
10~300
±0.5
500
±0.5
1.0
±0.08
10~300
±0.5
600
±0.5
1.5
±0.12
10~400
±0.5
600
±0.5
2.0
±0.12
10~500
±0.5
700
±0.5
3.0
±0.20
10~500
±0.5
600
±0.5
Hot Rolling
4.0
±0.30
10~500
±0.5
600
±0.5
≥5.0
±0.40%
10~550
±0.5
600
±0.5

Third, the production technology and equipment

No.
Production Process
Production Equipment
Quality Check Point
1

Tungsten blanks (raw material)
 
1, the physical and chemical properties; 2, the slab length and breadth dimensions;
2
Test
 
3, surface quality; 4, the blank singlet;
3
Hot rolling
Two roller reversible rolling mill

1, thickness and width;
4
Leveling and Annealing
Direct thermal annealing box leveling
2, surface crack, head layered, pressed into the black spots;
5
Caustic
Horizontal furnace alkali bath
3, oblique rolling;
6
Test
 
4, flatness;
7
Warm rolling
Four roller reversible cold rolling mill
1, length, width and thickness dimension;
8
Leveling annealing
Direct thermal annealing box leveling
2, edge crack, head peeling, indentation;
9
Test
 
3, flatness;
10
Cold rolling
Four roller reversible cold rolling mill
1, product density;
11
Shear
Hydraulic shears
2, length, width and thickness dimension;
12
Vacuum annealing
Horizontal vacuum annealing furnace
3, peeling, indentation, surface quality;
13
Machining
Line cutting, grinding plane
4, roll marks, stress;
14
Test
 
5、flatness;
15
package
 
6, to produce quality certificates;
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