Why Do Chromium Carbide Overlay Wear Plates Have Surface Cracks?

If you are sourcing chromium carbide overlay wear plates for mineral processing, bulk material conveying or industrial chute lining, you may notice fine cracks distributed on the cladding surface. Many buyers mistakenly regard these cracks as product defects and worry about short service life during on-site operation. In fact, these surface cracks are a normal characteristic of properly manufactured chromium carbide overlay wear plates.

Chromium carbide overlay plates are manufactured through surfacing welding technology. The welding process generates extremely high temperatures ranging from 2000℃ to 4000℃. Such intense heat creates substantial internal welding stress inside the wear plate. Residual welding stress poses hidden risks; without an effective stress release channel, the wear plate is prone to unexpected fracture or severe deformation under working loads after installation.

The tiny cracks visible on the plate surface serve as a natural channel to release internal welding stress. Controlled stress release prevents larger structural failures such as bending and overall breakage when the plate is put into service. It is critical to note that the base metal and carbide overlay layer form a strong metallurgical bond. Under standard working conditions, these inherent surface cracks will not trigger spalling, chipping or penetrating fractures during long-term operation. When placing orders, purchasers can check crack distribution, overlay thickness and flatness as core inspection indicators before shipment.

Shandong Qishuai Wear-resistant Equipment Co., Ltd. supplies custom chromium carbide overlay wear plates with stable surfacing craftsmanship to satisfy diverse industrial wear protection demands. Apart from chromium carbide overlay series, we also provide Ceramic Rubber Composite Plates series, Alumina Ceramic series,as well as silicon carbide ceramic products for different abrasion and impact working conditions.

If you intend to purchase chromium carbide overlay wear plates or want to confirm technical parameters, size customization, factory lead time and bulk order quotations, feel free to send your requirements via email. Our technical team will reply with professional solutions tailored to your working conditions.

Email：qishuai@zbqishuai.cn