Other Industrial Plaster (High Expansion Model)


● Characterized


- SamWoo DIASTONE-ME series High-expansion model gypsum is used for plastic expansion models and casting or steel contraction by congelation.


● Uses


- Production of expansion models to compenate for the rate of contraction by congelation of various of steel.

- Compensation for the rate of contraction of resin molds.

- Reproduction of steel casts.


 

● Kind of Products

Type

Water
consistency
(%)

Water
temperature
(℃)

Mixing
time(min.)

Setting
time
(min.)
Initial

Setting
time
(min.)
Final

Wet
expansion
(m/m)

Wet
Compressive
strength
(kgf/cm³)

Property

ME-50

40

20

5~6

15

30

5/1000

200

Shrink revision of iron

ME-100

40

20

5~6

15

40

12/1000

200

Shrink revision of Zinc,
bronze and aluminum alloy

ME-200

40

20

5~6

15

50

20/1000

200

Shrink revision of Zinc,
bronze and aluminum alloy,
Casting copy

ME-250

40

20

5~6

15

50

25/1000

200

Shrink revision of stainless steel



● Direction



1. Accurately measure the amount of gypsum and water to be mixed.

2. The mixing case must be claen and if possible, its size should be appropriate to the amount of gypsum to be used.

3. Make sure to mix them after fixing them for one or two minutes after putting water on the gypsum.

4. To get an even slurry, use mixing wings that have a high mixing efficiency and a mixing machine that is suitable to the mixing case.

5. For the mixing duration, please follow the instruction on the test report.

6. When Using several mixing cases, use them appropriately to get an even consistency in a cast.

7. When casting complex shapes, particularly concave shapes, low-expansion gypsum should be used, in the case of convex shapes, use gypsum after transcription. In addition, if part of the cast is concave, cast the part separately. This is necessary since the amount of expansion at the time of casting-out is about 50%.