The hook type shot blasting machine (also known as a hanger type shot blasting machine) is one of the most versatile surface preparation systems in the foundry and metalworking industry. Its unique design — suspending workpieces on a rotating hook or hanger — allows for 360-degree abrasive blasting coverage without requiring the workpiece to be tumbled or flipped manually. But the key to maximizing your investment in a hook shot blasting machine lies in knowing exactly which workpieces it handles best (and which it does not). In this article, we provide a comprehensive breakdown of the workpiece categories ideally suited for hook type shot blasting machines, based on real-world production experience at Qingdao Puhua Heavy Industrial Machinery Co., Ltd.

Recently, a roller conveyor shot blasting machine from Puhua Heavy Industry successfully completed production debugging and, after passing inspection, was packed and shipped to Southeast Asia. This equipment will be delivered to a local steel structure manufacturing company, primarily for surface cleaning of steel plates and sections, providing reliable pretreatment for steel structure painting.

In steel structure manufacturing, shipbuilding, bridge engineering and heavy machinery industries, the quality of surface treatment directly affects coating adhesion, anti-corrosion performance and product service life. In order to standardize the quality of steel surface cleaning, international standards clearly classify the surface condition after blast cleaning. Common grades include Sa2, Sa2.5 and Sa3.

In the shot blasting process, uneven surface cleaning results—such as localized over-cleaning, residual mill scale, or significant variations in surface roughness—are common quality issues. These are typically caused by a combination of factors, including equipment condition, process parameters, and workpiece fixturing. The following is a systematic analysis based on engineering practice.

In industries such as steel structure fabrication, bridge manufacturing, and shipbuilding, surface cleaning of steel plates and structural steel is an essential step prior to coating. Efficiently and uniformly removing mill scale and rust from steel surfaces is a key concern for many production managers. Puhua Heavy Industry’s roller conveyor shot blasting machine is designed to meet this need; this article introduces the equipment by covering its working principle, applicable workpieces, technical features, and key selection criteria.

During operation, shot blasting machines generate a significant amount of dust; the dust collection system is a critical component for ensuring the equipment meets environmental standards and maintaining a clean workshop environment. However, in practical use, dust collection systems frequently encounter various issues. This article compiles the most common fault phenomena and troubleshooting methods for shot blasting machine dust collection systems, serving as a reference for equipment maintenance personnel.