ML4
parts of engines and other units operating in conditions of high corrosion resistance, static and dynamic loads; max operating temperature: 150 ° C -Duration 250 ° C -kratkovremennaya
parts of engines and other units operating in conditions of high corrosion resistance, static and dynamic loads; max operating temperature: 150 ° C -Duration 250 ° C -kratkovremennaya
| Standard | Fe, % | Si, % | Be, % | Mg, % | Mn, % | Cu, % | Zn, % | Ni, % | Zr, % | Al, % |
|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Fe, % | Si, % | Be, % | Mg, % | Mn, % | Cu, % | Zn, % | Ni, % | Zr, % | Al, % |
| GOST 2856-79 | < 0.06 | < 0.25 | < 0.002 | 88.4–92.85 | 0.15–0.5 | < 0.1 | 2–3.5 | < 0.01 | < 0.002 | 5–7 |
| Temperature, °C | $$E\cdot 10^{9}$$, $$MPa$$ | $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ | $$\varkappa$$, $$\frac{W}{m\cdot K}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ |
|---|---|---|---|---|---|
| Temperature, °C | $$E\cdot 10^{9}$$, $$MPa$$ | $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ | $$\varkappa$$, $$\frac{W}{m\cdot K}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ |
| 20 | 43 | 79.5 | 1830 | 1.0467 | |
| 100 | 27.6 |
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | $$\psi$$, % | Treatment |
|---|---|---|---|---|---|---|---|---|---|
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | $$\psi$$, % | Treatment |
| 250–255 | 85–115 | 6–9 | 8–13 | ||||||
| Casting | GOST 2856-79 | in sandy form | 160 | 80 | 3 |
| Standard | Description |
|---|---|
| Standard | Description |
| GOST 2856-79 |
| Parameter | Units of measurement | Description |
|---|---|---|
| Parameter | Units of measurement | Description |
| $$E\cdot 10^{9}$$ | $$MPa$$ | Elastic modulus |
| $$\alpha\cdot 10^{6}$$ | $$K^{-1}$$ | Coefficient of thermal (linear) expansion (range 20°C–T) |
| $$\varkappa$$ | $$\frac{W}{m\cdot K}$$ | Coefficient of thermal conductivity (the heat capacity of the material) |
| $$\rho$$ | $$\frac{kg}{m^3}$$ | The density of the material |
| $$c\cdot 10^{-3}$$ | $$\frac{J}{kg\cdot K}$$ | The specific heat of the material (range 20°C–T) |
| Parameter | Units of measurement | Description |
|---|---|---|
| Parameter | Units of measurement | Description |
| linear shrinkage | % | The difference between model dimensions and the model casting |
| the temperature of the casting | °C | The temperature of the molten polymer is extruded from the heating cylinder into the mold |
| the crystallization temperature | °C | The temperature at which the free energies of liquid and solid States of the metal is equal to |