Industrial Plaster


● Product Review


- Production and reproduction of gypsum models (industrial Plaster)

- Steel casting practice

- Alternative to wooden, steel or plastic castings

- Other gypsum models requiring high strength, Solidity or precision

- Gypsum cases for gypsum model production (industrial Plaster)

 

● Kind of Products

Type

Water
consistency
(%)

Setting
time
(min.)

Expansion
Ratio
(%)

Tensile
Strength
(kgf/cm³)

Compressive
(kgf/cm³)

Property

Initial

Final

Wet

Dry

Wet

Dry

MR-150

26

18

50

0.05

35

65

350

700

Blending resin,
Highest compression,
Good surface hardness

MR-100

30

15

50

0.05

25

50

250

500

Blending resin,
High compression,
High hardness

MR-50

30

12

45

0.05

25

50

250

500

Blending resin,
High compression,
High hardness

MR-5L

35

20

55

0.05

20

38

200

310

Blending resin,
Low expansion

MS-L

42

25

50

0.01

15

40

200

300

Extremely lowest expansion

M-10

35

23

45

0.03

25

45

220

350

lowest expansion,
Retardation of coagulation

M-20

50

15

40

0.10

18

35

160

280

Easy process,
Good workability

M-30

45

15

30

0.03

20

38

180

300

Low expansion

M-40

50

15

40

0.15

18

35

180

300

Abrasion resisting


● Usage and Precautions




1. Amount of Water to be mixed

Accurate measurement of the amount of water and gypsum to be mixed is one of the most important conditions for the resultant quality. Please follow the standard mixing volume that is appropriate to each type of gypsum.

According to the increase or decrease in the amount of water to be mixed, there is a corresponding change in the time for stirring or hardening and in the gypsum model’s strength and solidity, etc.


2. Mold Release Agent

In case a hydroscopic model is used, there might be some difficulties in producing a model. Please thoroughly apply SamWoo Surface Reinforcing Agent to the surface of the model and impregnate the mold lubricant with it.

If the model is made of steel, Vaseline or stearic acid gerotin liquid should be used instead.


3. Stirring Time

If casting is done by molding, please mix accurately measured of water and gypsum and stir the mixture thoroughly to get an even consistency before putting it into the model.

In addition, if casting is done by laying, let the mixture stand for a white and use it when the viscosity of the Slurry goes up


4. Stripping