What is the processing of Tubesheet in Deep-hole Drilling

The processing of tubesheet in deep-hole drilling involves several steps to create precise, deep holes for the insertion of tubes. Here is a general overview of the process:

Material preparation: The tubesheet is typically made from a metal alloy such as carbon steel, stainless steel, or copper alloys. The material is selected based on the specific application requirements.

Fixturing and setup: The tubesheet is securely clamped or fixtured onto a drilling machine or jig to ensure stability during the drilling process. Proper alignment and positioning are crucial for accurate hole placement.

Tool selection: Specialized gun drills are used for deep-hole drilling. These are long cutting tools with internal coolant channels. The tool diameter is selected based on the required hole size, and the length is determined by the depth of the holes in the tubesheet.

Drilling operation: The gun drill is inserted into the tubesheet and rotated while simultaneously being fed into the material. Coolant/lubrication is applied through the drill to facilitate chip evacuation and reduce heat generation. The drilling operation continues until the desired depth is reached.

Hole quality control: Throughout the drilling process, parameters such as drill speed, feed rate, and coolant/lubrication flow are carefully monitored to ensure hole accuracy, straightness, and surface finish. Inspection techniques like measuring the hole diameter, checking for deviations from the desired position, and assessing surface roughness may be conducted.

Post-processing: After the drilling operation, the tubesheet may undergo additional processes such as deburring or chamfering to remove any sharp edges or burrs caused by drilling.

It's important to note that the specific details of the deep-hole drilling process can vary depending on factors such as the size and complexity of the tubesheet, the material being drilled, and the equipment and techniques used by the manufacturer.

Tubesheet in Deep-hole Drilling