Formula and preparation method of mine hoist soft-magnetism brake shoe material

The invention discloses a formula and preparation method of a mine hoist soft-magnetism brake shoe material. The material formula consists of the following ingredients in parts by weight: 10-20 parts of organic binder, 15-50 parts of reinforcing fibers, 10-50 parts of friction performance modifier, 3-10 parts of filler and 5-30 parts of soft magnetic material. The preparation method comprises the steps of crushing, mixing, carrying out hot-press forming, carrying out heat treatment and the like. The material formula has the beneficial effects that a mine hoist soft-magnetism brake shoe shows stable friction and wear properties and good heat resistance and is better adaptable to extreme braking conditions, such as high speed and heavy load; due to the added soft magnetic material, the coefficient of friction of the hoist brake shoe is increased, and the wear rate of the hoist brake shoe is reduced, so that the brake shoe has relatively high magnetic conductivity and magnetic induction intensity, and the most basic material conditions are provided for magnetic field control during braking friction. The preparation method of the mine hoist soft-magnetism brake shoe is relatively simple and does not need beforehand magnetizing, and a friction behavior can be regulated and controlled through adjusting the size of magnetism by an external magnetic field during braking.