Question

Инструментальный цех ПОЛУЧИЛ ЗАДАНИЕ изготовить 150 резцов сколько стали на это необходимо если 10% ее идет в стружку длина тела резца 270 мм ширина 50 мм и высота 45 мм плотность стали 7.8 г\см

Answer 1

$l=0,27 m$
$a= 0,05 m$
$h= 0,045 m$
$p=7800 \frac{kg}{ m^{3} }$    p=$\frac{m}{V}$

m = pV*0,9

m = 7800 * 0,27 * 0,05 * 0,045 * 0,9 = 4,26465 ≈4,3 кг

Answer 2

Calculating the Amount of Steel Needed for 150 Tool Bits

To calculate the amount of steel needed to manufacture 150 tool bits, we can use the given dimensions of the tool bits and the percentage of steel that goes into shavings.

Given: - Number of tool bits to be manufactured: 150 - Length of the tool bit: 270 mm - Width of the tool bit: 50 mm - Height of the tool bit: 45 mm - Density of steel: 7.8 g/cm³ - Percentage of steel that goes into shavings: 10%

Calculation

First, we need to calculate the volume of each tool bit and then determine the total volume of steel required for 150 tool bits.

The volume of each tool bit can be calculated using the formula: \[ V = l \times w \times h \] Where: - \( V \) = Volume - \( l \) = Length - \( w \) = Width - \( h \) = Height

Substituting the given values: \[ V = 270 \, \text{mm} \times 50 \, \text{mm} \times 45 \, \text{mm} \]

Converting the volume to cubic centimeters (cm³): \[ V = 270 \, \text{mm} \times 50 \, \text{mm} \times 45 \, \text{mm} = 607500 \, \text{mm}^3 = 607.5 \, \text{cm}^3 \]

Now, we need to calculate the total volume of steel required for 150 tool bits: \[ \text{Total Volume} = 150 \times 607.5 \, \text{cm}^3 \]

Next, we need to account for the 10% of steel that goes into shavings. To do this, we can calculate the actual amount of steel needed: \[ \text{Actual Volume of Steel} = \text{Total Volume} - (0.10 \times \text{Total Volume}) \]

Finally, we can calculate the mass of steel needed using the density of steel: \[ \text{Mass of Steel} = \text{Actual Volume of Steel} \times \text{Density of Steel} \]

Result

By performing the calculations, the amount of steel needed for manufacturing 150 tool bits can be determined.