What do we Do before Delivery？

NDT/Ultrasonic Non-Destructive Testing

Polycrystalline diamond compact (PDC) bits are commonly used as drill bits in the drilling industry. Cracks often occur on the surface of a bit, which may result in the unexpected suspension of the excavation performance, or even accidents. Therefore, the detection of the diamond layer on PDC bits is of great importance to ensure continuous drilling, and Nondestructive Testing (NDT) methods are being used as an important characterization tool while doing detection.

The main tools employed in the drilling industry are roller cones and drag bits. Compared to roller cones in direct overall cost and consistency performance, the drag bits using PDC (Polycrystalline Diamond Compact) cutters are really more attractive. In fact, as reported, PDC bits could drill twice faster and longer than roller bits even in hard formations Petroleum and hydrothermal investigations in deep geological formations lead to manufacturing new bits materials that are able to drill at a higher temperature, in more abrasive and harder geological fields. Such innovating materials, sintered under HPHT (i.e. High Temperature and High Pressure) and special design, recently developed to improve drill bits' hardness and fracture toughness, also require new strategies in quality assessment. Drag bits are mostly damaged by abrasion and thus quality can be defined by two main parameters: materials wear rate and excavation performance.

We can not control the excavation performance, but we can control the materials' wear rate through production and testing. That’s why we not only do normal testing of appearance of Diamond layer, to ensure the surface smooth, edges and corners are clear with no cracks or defects, but also do NDT and we trust it’s worthy, because it saves you a huge cost.

Not only for PDC but also wire die blanks, we do NDT.