| 특징 , 용도 |
종래의 폐사 PE베어링 보다도 내약품성 , 내열성이 뛰어난 수지 베어링 입니다.
화학프로세스 공업의 반송기기, 의료기기, 반도체 세척기기, 기타약액중, 고온하에서의 반송장치등에 사용합니다. |
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| 재질 |
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| 선정기준 |
 |
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Durability
of Plastics against Chemical Affections
|
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| Table No.1 : Durability of Plastics
against Acid and Alkali |
| ----------------------- |
Acetal
|
Nylon
|
Polyethylene
|
Polypropylene
|
| Liquid
Ammonia |
|
◎
|
◎
|
○
|
| Calcium
Hydroxide |
◎
|
◎
|
◎
|
◎
|
| Potassium
Hydroxide |
○
|
○
|
◎
|
◎
|
Sddium
Hydroxide |
30% 30℃ |
--
|
X
|
○
|
◎
|
| 30%RT |
--
|
◎
|
◎
|
◎
|
| 10%RT |
△
|
◎
|
◎
|
◎
|
| Oxalic
Acid |
◎
|
◎
|
◎
|
◎
|
| Acetic
Acid |
50%RT |
--
|
△
|
○
|
○
|
Hydrochloric
Acid |
50%RT |
--
|
X
|
◎
|
◎
|
| 10%RT |
--
|
○
|
◎
|
◎
|
| Nitric
Acid |
Fuming |
X
|
X
|
X
|
X
|
| 61%RT |
X
|
X
|
△
|
△
|
| 10%RT |
△
|
△
|
◎
|
◎
|
Sulphuric
Acid |
Fuming |
X
|
X
|
X
|
△
|
| 98%RT |
X
|
X
|
△
|
△
|
| 10%RT |
△
|
○
|
◎
|
◎
|
| Chromic
Acid 25%RT |
X
|
X
|
○
|
△
|
|
| Show on Table NO.1 is durability
of each mater ial such as Acetal Nylon Polyethylene and Polypropylene
respe-ctively against Acid and Alkaii. |
|
| |
| Table No.1 : Durability of Plastics
against Acid and Alkali |
| ----------------------- |
Acetal
|
Nylon
|
Polyethylene
|
Polypropylene
|
| Sea-Water |
◎
|
*
|
◎
|
◎
|
| Sulfur
dioxide Gas |
|
|
○
|
◎
|
| Carbonic
Acid Gas |
◎
|
◎
|
◎
|
◎
|
| Ammonia |
|
◎
|
◎
|
|
| Petroleum |
○
|
◎
|
△
|
○
|
| Benzine |
△
|
○
|
△
|
△
|
| Holmaldehyde |
|
△
|
○
|
◎
|
| Ethyl
Alcohol |
◎
|
○
|
○
|
○
|
| Cresol |
○
|
X
|
○
|
○
|
|
Durability of each material against
solvent, all gases and sea-water is shown in Table NO.2
Bearings used in sea-water must possess anti-corrosiveness to water,
whereas the asterisked(*) Nylon Resin is too water-avsorptive to be
used for outer-ring inner-ring or balls in this fled application |
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| ANTI_CORROSIVENESS OF STAINLESS STEEL |
|
SUS 304
|
Nylon
|
| Sea-Water |
A*
|
A*
|
| Sulfur
Dioxide Gas(Wet)20℃ |
B
|
A
|
| Liquiid
Ammonia |
Boiling |
A
|
A
|
| 20℃ |
A
|
A
|
| Benzine20℃ |
A
|
A
|
| Ethtl
Alcohol |
|
A
|
A
|
|
A
|
A
|
| Ammonia |
Gas-High
Temperature |
D
|
--
|
| Whole
Density 20℃ |
A
|
A
|
| Potassium
Hydroxide |
A
|
A
|
| Sodium
Hydroxide |
A
|
A
|
| Oxalic
Acid 10%20℃ |
A
|
A
|
| Acetic
Acid 50%20℃ |
A
|
A
|
| Hydrochioric
Acid Whole Density 20℃ |
E
|
E
|
| Nitric
Acid |
50% Boiling |
A
|
A
|
| 50%20℃ |
A
|
A
|
| 10% Boiling |
A
|
A
|
| 10%20℃ |
A
|
A
|
| 5% 20℃ |
A
|
A
|
| Sulphuric
Acid |
10%20℃ |
C
|
A
|
| 5% Boiling |
E
|
C
|
| 5%20℃ |
C
|
A
|
|
Stainless Steel, as the name
itself expreses, generally quite effective in anti-corro-siveness,
However, it occasionally gets corroded and cracked by a stress at
the corroded portion, evetually precautions must be take when it will
be used.
Table NO.3 indicates anti-corro-siveness of Stainless Steel both in
types of JIS-SUS304 and JIS-SUS316. In case it will be used in surroundings
and conditions ather than stipulated in the table. please consuit
us before use. |
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