In the production of brake shoes, Spongy Iron Powder has become an important component in brake shoes mixtures and mixes, playing a significant role in the formation of brake shoes friction materials. This material brings both distinct advantages and some limitations to the performance of brake shoes.

Spongy Iron Powder can effectively enhance the friction coefficient of brake shoes friction materials. In laboratory tests, when adding 20% Spongy Iron Powder to the brake shoes mixture, the friction coefficient increased from 0.35 to 0.45 under normal braking conditions. This improvement in friction performance ensures stronger braking force, enabling vehicles to decelerate more rapidly and safely.

It has relatively good thermal conductivity. During the braking process, heat is generated due to friction. Brake shoes with Spongy Iron Powder in their friction materials can dissipate heat more efficiently. For example, in a high – speed braking test, the temperature of brake shoes with 15% Spongy Iron Powder rose by only 80°C, while that of brake shoes without it increased by 120°C. This efficient heat dissipation helps to prevent the overheating of brake shoes, maintaining stable braking performance.

Spongy Iron Powder is relatively inexpensive compared to some high – performance materials. Incorporating it into brake shoes mixtures can reduce the production cost by approximately 15 – 20%. This cost – saving feature makes it an attractive option for brake shoe manufacturers, especially when large – scale production is involved.

Spongy Iron Powder is prone to oxidation in the air. Once oxidized, its performance in the brake shoes friction materials may be affected. In a storage test, after being exposed to air for 3 months, the friction – enhancing effect of Spongy Iron Powder in the brake shoes mixture decreased by about 10 – 15%. Special anti – oxidation measures are often required during storage and production to ensure its quality.

In some cases, Spongy Iron Powder may contain a certain amount of impurities. These impurities can affect the uniformity and stability of the brake shoes friction materials. For example, when the impurity content in Spongy Iron Powder exceeds 3%, the fluctuation range of the friction coefficient of the brake shoes friction materials increases by about 20%, which may lead to inconsistent braking performance.

In summary, Spongy Iron Powder offers advantages such as high friction performance, good thermal conductivity, and cost – effectiveness in brake shoes production. However, its susceptibility to oxidation and relatively high impurity content are issues that need to be carefully addressed to fully utilize its potential in the manufacturing of high – quality brake shoes.