Structure of babbitt bearing bush

[China Aluminum Network] The main alloying components of the Babba alloy bushings are tin, lead, bismuth and copper.锑, copper. The soft phase matrix allows the alloy to have very good hiding, compliance, and babbitt alloy seizure resistance to improve alloy strength and hardness. The babbitt's arrangement is characterized by the uniform distribution of hard phase points on the soft phase matrix. And after running-in, the soft base is concave in the body, and the hard spots are convex outwards, so that small gaps form between the sliding surfaces, and become oil storage spaces, babbitt alloy bushings and lubricating oil channels, which are conducive to reducing friction; Supporting effect is conducive to carrying. In addition to making plain bearings, babbitt alloys are often applied to bearings such as steels because of their soft texture and low strength. The babbitt is based on tin (see tin alloys) and lead based alloys. The latter contains 10% 20% tin 5% 15% in order to avoid segregation of components and grain refinement, but also often participate in a few arsenic. Lead-based alloys have lower strength and hardness than tin-based alloys and have poor corrosion resistance.

The arrangement is characterized by the uniform distribution of hard phase points on the soft phase substrate. And after running-in, the soft phase matrix allows babbitt to have very good hiding, compliance, and anti-biting babbittalloy properties. The soft base is concave in the body, and the hard spots are convex outwards, making the small gaps between the sliding surfaces, becoming the oil storage space and the lubricating oil channel, which is conducive to friction reduction; the hard spots on the convexity support the bearing effect and are conducive to carrying the Babbitt alloy. bush.

Brinell alloys (including tin-based bearing alloys and lead-based bearing alloys) are better known bearing materials. Because of its white color, it has anti-friction properties of tin-based and lead-based bearing alloys. It was named after the American Babbitt. Also known as white metal, its use dates back to the industrial revolution. Tin-based Babba alloys and lead-based Babba alloys with friction-reducing properties are suitable materials for bearing-only alloys to roll relative to low-hardness shafts and have better adaptability and press-inability than other shaft-bearing alloys. , Widely used in large marine diesel engines, turbines, alternators, and other mining machinery and large rotating machinery.