As a professional crusher parts casting factory, we often receive inquiries from clients (including crusher equipment users and new traders): "How long will your crusher parts last?" "Which material is more suitable for our working conditions?" "What are the practical differences between Mn18 and Mn13?"
As a manganese steel casting factory with rich experience, today we will delve into several core factors that affect the service life of crusher parts. This article primarily focuses on cast wear parts (such as jaw plates, cone liners, mill liners, and other manganese steel and chromium steel castings).
1. Standards for Selecting Crusher Parts Material
Except for special components (such as high chromium cast iron used for hammerheads), high-quality crusher parts casting factories typically choose manganese steel as the primary material. Common manganese steel grades include Mn13, Mn18, and Mn22. The characteristic of manganese steel is that its surface rapidly hardens under strong impact while maintaining excellent toughness in the base material. The higher the degree of surface hardening (with hardness reaching HB550 or above after full hardening), the better the wear resistance. On the other hand, surfaces that are insufficiently hardened (with hardness lower than HB350) will negatively affect the service life of crusher parts.
The choice of material should be based on specific working conditions:
● Recycled manganese steel can meet the production requirements for standard Mn13.
● For higher performance demands (such as Mn18 or above), electrolytic manganese raw materials must be used. This is especially important for professional manganese steel casting factories.
2. Key Control Points in Heat Treatment Process
As a core process in crusher parts casting, heat treatment directly affects the final quality of the product:
● The castings must be thoroughly cleaned before being placed in the furnace.
● Strict control is required for the time interval from casting to quenching.
● Effective control of the carbon content on the surface of the castings.
● The quenching bath temperature must meet European standards (below 20°C).
● The initial temperature of the casting when entering the furnace must be precisely controlled.
3. Precision Machining and Surface Treatment
In a professional crusher parts casting factory, after heat treatment, the castings need to undergo:
● Precision machining to ensure dimensional accuracy.
● Professional rust prevention treatment (painting not only enhances appearance but also effectively prevents oxidation).
Through the strict control of these processes, a high-quality manganese steel casting factory can produce crusher parts with long service life and stable performance. We recommend that clients not only pay attention to the material grade but also consider the overall process level of the casting factory when making their selection.
