PRODUCTS

 

 

 

Crucible Sizes

type
Out diameter
Height
Wall thickness 1
Wall thickness 2
Wall thickness 3
Radius 1
Radius 2
D(mm)
H(mm)
W1(mm)
W2(mm)
W3(mm)
R1(mm)
R2(mm)
10”
254±2
178±3
7.0±2
7.0±2
7.0±2
305
70
12”
305±2
228±3
8.0±2
8.0±2
8.0±2
305
80
14”
355±2
254±3
9.0±2
9.0±2
9.0±2
400
90
16”
404±2
305±3
9.5±2
9.5±2
9.5±2
400
90
18”
457±3
355±3
9.5±2
9.5±2
10±2
500
120
20”
508±4
381±3
10.0±3
10.0±3
11.0±2
510
120
22”
558±4.5
381±3
10.0±3
10.0±3
11.0±2
558
130
24”
610±4.5
381±3
11.0±3
11.0±3
12.0±2
610
130

The height, outside diameter. wall thickness of the quartz crucible, also the size of the crucible bottom can according to the customers’ requirement.


Production Process

We use Coating Method and Vacuum technology to make high purity quartz crucible whose wall disport to translucent and transparent.The typical thickness of transparent layer at the inner surface is 0.6mm -- 2.0mm. This layer is substantially bubble free, and it is made of ultra-high puritysilica sand. Therefore , it is difficult to crystallize for long time using. In addition, in order to keep the farthing coherer from dissociating, we utilize coating barium technology.

Chemical Elements Analyze
frade
A1
Fe
Ca
Na
K
Li
Ti
Cr
Ni
Mg
B
P
OH
Solar Grade
18
0.2
0.6
1.1
0.9
0.7
1.1
0.05
0.05
0.05
0.08
0.05
50
Electronics Grade
7.5
0.2
0.5
0.3
0.1
0.2
1.4
0.05
0.05
0.05
0.04
0.02
50
synthetic
20
27
23
8
1
1
25
2
1
9
10
10
50
 
Quality and Capability
 
 
The purity and the quality of quartz crucible have an influence on yield of the latter processes. So we adopt high standard. Actualize of carrying out the omnidirectional of following up the quality system from putting the raw material on stream process to used by customers .To the products, ,every quartz crucible has an I.D, from making, inspection, packing, seles to after sales service, all stored in our computer.. In order to give the best service to the customer.
 From the raw material purchasing, stocking, processing, cutting, washing, packing, sales, we have a whole set of perfect system for dividing the work. In order to purify the purity of quartz crucible, especially establish assembly depurative workshop and air blowing room which use for blowing off the atomy which accreted on person or thing, also operate as gas valve.
General speaking,any type of pollution is harmful.Alkali,salt,water and steam leave pollutant at the inner surface of crucinle.The remainder of pollution will speed up the Crystallization process.So we strictly with quality control regulations.This way effectively secures high purity.
The purge of pure water
 

Crystallization is melting quartz change to crystalloid. During this transforming process, the form, the construction and the density of quartz will be changed. Broken, burst or mechanical malfunction will take place inside the quartz crucible.
Crystallization consists of two steps: a).Crystallization b).Growing and Forming
The Alkali and the other metallic particles in the crucible inner surface is the main reason of Crystallization. We use high purity quartz powder producing the inner transparent layer. The Crystallization is controlled at the lowest level.
Growing and Forming depends on the temperature which quartz crucible used, crucible’s viscosity and OHˉ CONTENT. The Crystallization speeds up according to the temperature and OHˉcontent rises up and viscosity goes down. Our crucible has high viscosity and low OHˉ content. So, anti-Crystallization is under control.

The main factor of crucible sink is OHˉ content.While keep the crucible wall thickness under certain range can effectively decrease sinking.Crucible stabled wall thickness all the time.Under this condition,crucible users free of sinking-wall vexation.Meanwhile,it is also important that the crucible size suitable with customer’s pulling graphite mold dimension.


The boat, Case, ring
 
Flat quartz boat; The quartz boat with carves;Semicircle quartz boat; Rectangle quartz boat; Quartz ring; The square case of transparent quartz, aquare case of opaque quartz;

 

 
 
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TEL:0086-574-62260111