Q69 Series Steel plate Shot Blasting Machine

Apr 16, 2026

The Q69 series steel plate and section steel shot blasting cleaning machine is a special equipment designed for surface rust removal and coating pretreatment of steel plates, section steels and structural parts in industries such as shipbuilding, automobile, bridge and machinery. Its core value lies in that it can continuously complete the two key processes of "rust removal" and "spray painting" on a single piece of equipment and in one assembly line, serving as the standard configuration of steel pretreatment lines.

What are the main features of the Q69 Series Steel plate Shot Blasting Machine and section shot blasting cleaning machine?

1. Fourth-generation cantilever centrifugal high-efficiency shot blaster

The shot blaster is the core component of the equipment. Compared with early technologies, the fourth-generation cantilever centrifugal design optimizes the acceleration path of shot particles, enabling them to be projected onto the workpiece surface more efficiently. It delivers higher cleaning efficiency and a longer service life of wearing parts with lower energy consumption.

2. Computer-aided blasting zone design

The trajectory of ejected shot particles is simulated by software to precisely arrange the position and angle of shot blasters, ensuring uniform kinetic energy distribution of upper and lower shot streams. This allows the upper and lower surfaces of steel plates to receive blasting force of equal intensity, eliminating cleaning dead zones or uneven cleaning where one side is clean and the other is dirty, with a coverage rate of 100%.

3. Photoelectric detection and automatic control

Photoelectric detection and automatic control serve as the core intelligent functions of the equipment:

When workpieces enter the equipment, photoelectric sensors instantly scan the width and thickness of steel plates. Based on the detected data, the system automatically controls the number of activated shot blasters (matching the plate width to avoid energy waste) and the lifting height of roller brush and blowing mechanisms (adapting to the plate thickness to prevent equipment collision). It realizes an energy-saving operation mode featuring automatic startup upon workpiece entry, automatic shutdown after workpiece departure, more working units for wide plates and fewer for narrow plates, with fully unmanned operation throughout the process.

Main Technical Parameters ofQ69 Series Steel plate Shot Blasting Machine

1.Technical Parameters

This series comes in multiple models, which are mainly selected according to the width of plates to be cleaned.

Parameter Item	Q698	Q6912	Q6915	Q6920
Effective Cleaning Width	800 mm	1200 mm	1500 mm	2000 mm
Chamber Feed Inlet Size	1000×400	1400×400	1700×400	2000×400
Clean the steel plate thickness	3 - 60 mm	3 - 60 mm	3 - 60 mm	3 - 60 mm
Roller Conveyor Speed	0.5 - 4 m/min	0.5 - 4 m/min	0.5 - 4 m/min	0.5 - 4 m/min
Shot blasting volume	4×180 kg/min	4×250 kg/min	4×250 kg/min	6×250 kg/min

2.Matching of Core Process Flow for Q69 Series Steel plate Shot Blasting Machine

The Q69 series is a roller pass-through shot blasting cleaning machine adopting a "continuous pass-through" operation mode, which fully conforms to the standard process of the steel pre-treatment line:Shot Blasting Rust Removal: Workpieces are conveyed into the cleaning chamber by roller tables and struck by high-speed projectiles to remove scale, rust layers and welding slag.Painting Process: After rust removal, spraying and drying can be carried out on the production line to form a complete pre-treatment line of "shot blasting rust removal → spray coating protection".Process Effect: The rust removal grade can reach Sa2.5, forming a coating-friendly roughness and significantly improving the adhesion of the coating layer.

3. Applicable Workpiece Types

Workpiece types that this equipment can process

Workpiece Type	Typical Specification Range	Corresponding Industry
steel plate	Width≤4000mm，thickness 3-100mm	Ships, Bridges, Machinery
Section Steel (I-beam / H-beam / Angle Steel, etc.)	Height ≤300mm，Width ≤4000mm	Steel structures, vehicles, bridges
Structural Parts	Length 1.2-18m	Construction Machinery, Rolling Stock

Q69 Series Steel plate Shot Blasting Machine

4. How do the key technologies of theQ69 Series Steel plate Shot Blasting Machine serve value?

The core technologies involved in the Q69 series equipment play a vital role in the rust removal and painting processes:

Technical Configuration	The practical value of the rust removal and painting process
Fourth-generation Cantilever Centrifugal Shot Blasting Machine	High ejection efficiency and low energy consumption ensure stable cleaning quality during continuous operation of large batches of steel plates and profiles.
Computer-aided design launch belt	The kinetic energy of projectiles on the upper and lower surfaces is uniform, eliminating dead cleaning zones and ensuring comprehensive rust removal on the flange and web of section steel.
Photoelectric Detection + Automatic Control (Width/Height/Displacement Measurement)	Automatically match the operating quantity of shot blasters and the height of cleaning devices, with more units activated for wide plates and fewer for narrow plates, saving energy and preventing equipment collision.
PLC Fully Automatic Control	Realize the full-line linkage control of preheating, shot blasting, painting and drying without manual intervention, suitable for assembly line production

5. Reference of Typical Industry Application Scenarios

Shipbuilding: Steel plate pretreatment (rust removal + shop primer coating) to solve the anti-corrosion problem of large-area steel plates

Automotive / Rolling Stock: Surface strengthening and pre-coating treatment for girders and frame profiles

Bridges / Steel Structures: Stress relief and rust removal for H-beams and welded structural parts to extend the service life of bridges

Machinery Industry: Texturing treatment and cleaning of structural parts before processing

Summary

The Q69 series shot blasting machines fully meet the requirements for "surface rust removal and painting processes of steel plates, profiles and structural parts". They serve as the standard equipment for steel pretreatment lines in industries including shipbuilding, automobile, bridge construction and machinery manufacturing. The equipment can perform shot blasting independently as a single unit, or be connected in a production line to realize continuous automated operations covering preheating, shot blasting, painting and drying.