Steel Bar & Billet Mill Scale Descaling Shot Blasting Machine
Shot Blasting Machines for Descaling Wire Rods, Bars, and Billets. Qingdao KEEJOO Group’s shot blasting machines for descaling wire rods, bars, and billets are renowned in the indu
Shot Blasting Machines for Descaling Wire Rods, Bars, and Billets. Qingdao KEEJOO Group’s shot blasting machines for descaling wire rods, bars, and billets are renowned in the industry for their stability and suitability for multi-shift operations. This mechanical descaling method serves as an eco-friendly, pollution-free alternative to chemical descaling.
Wire & Bar & Billet Descaling Shot Blasting Machine
Qingdao KEEJOO Group’s shot blasting machines for wire rods, steel bars and square steel billets are renowned across the industry for outstanding stability and reliable multi-shift continuous operation. As a mechanical descaling solution, this shot blasting technology serves as an eco-friendly, pollution-free alternative to chemical pickling descaling processes.
Wire rods, steel bars, pipes and profiles can be shot blasted in single-line or multi-line feeding modes. KEEJOO provides the following solutions for coil mill scale descaling:
These machines are equipped with 3–4 or 6–8 blast wheels, which can not only meet various throughput requirements but also be optimally adjusted for constantly changing products. This type of shot blaster can be easily integrated into modern wire drawing lines, with a maximum operating speed of 240 m/min. It can also be used as a standalone unit for surface treatment.
KEEJOO provides solutions for reel shot blasting using its patented reel-handling mandrel. This mandrel opens the reel to expose the cable for shot blasting and subsequently closes it again. The system is available in single- or dual-mandrel configurations, allowing one reel to be loaded or unloaded while another is being blasted. The number and positioning of the blast wheels are specifically engineered to ensure maximum coverage for this challenging application.
KEEJOO billet mill scale descaling shot blasting machines adopt the single-line longitudinal shot blasting cleaning principle and are generally installed ahead of flaw detection equipment.
KEEJOO billet descaling shot blasters can be integrated into fully mechanized surface treatment lines to realize continuous material flow. They can also work as standalone units with loading/unloading equipment and storage rails.
The number of operational blast wheels is determined by production requirements, while the cleaning grade complies with the surface quality standard specified by the flaw detection process.
KEEJOO KB Series Shot Blasting Machine for Wire Rods & Steel Bars
Delivery:
18+ weeks
Technology:
Shot blasting
Applications:
Cleaning, rust removal, thermal descaling
Process:
Continuous passage
Advantage
Eco-Friendly Descaling Solution for Wire Rods & Steel Bars
Modern Shot Blasting Technology
Efficiently remove oxide scale
Safe and reliable operation
Features
Remote control of abrasive flow allows the shot blasting process to easily adapt to changing production demands.
The shot blasting chamber housing is constructed from hard manganese steel.
Can be used as a standalone unit or integrated into a production line.
Significantly improves energy efficiency through the use of adjustable abrasive flow guide plates.
Application
Descaling and cleaning of round, square, hexagonal, or flat wire and bar stock
Single-strand or multi-strand machines available, depending on production planning and processing capacity
Highly sustainable
The KB wire and bar shot blasting machine enables single-strand, pass-through shot blasting for descaling wire, bars, or profiles with diameters ranging from 5 to 130 mm.
The KB shot blasting machine for wire rods and bars is a highly versatile and efficient piece of equipment. Designed with configurations of 3–4 or 6–8 blast wheels, it not only meets varying production capacity requirements but also offers flexibility for product changeovers. The machine can be seamlessly integrated into modern wire drawing lines—supporting drawing speeds of up to 240 meters per minute—or operated as a standalone unit for finishing processes.
Reduce production costs
Wire and rod stock of various sizes and shapes (round, square, hexagonal, and flat) can undergo uniform shot blasting to remove scale. Guiding components ensure the material passes smoothly through the blasting zone.
The shot blasting speed generally depends on the type of oxide scale, the material being treated, and the required surface quality after blasting.
Selecting the appropriate equipment model based on production schedules and descaling speeds is a prerequisite for achieving efficient operation and delivering customized solutions. Ancillary equipment—such as coil handling systems, straighteners, drive mechanisms, and loading/unloading units—ensures the system operates efficiently. Specialized equipment features maximize energy and abrasive media efficiency. FL shot blasting systems are high-performance units proven through countless applications.
Types of equipment used for descaling wire rods and bars
Used for removing oxide scale from wires
The FL3, FL4, and FL6 shot blasting machines are equipped with three, four, and six blast wheels, respectively, along with abrasive flow deflectors. These deflectors can be adjusted in just a few seconds to match the cross-section of the material being processed, ensuring maximum energy efficiency and optimal abrasive utilization. The deflector system allows small-diameter wire to enter and pass through smoothly.
Used for removing oxide scale from rods
This series of equipment is equipped with four or six blast wheels and is designed for use with modern high-speed wire drawing lines. Guide rollers and hold-down rollers ensure the smooth passage of rods through the machine; each conveyor roller is individually driven and vertically adjustable.
Wire rod shot blasting machine with built-in blast wheels
The blast wheel is the heart of the shot blasting machine, and its design determines the performance of the entire system. The HT100 comes as standard equipment. The M-series integrated blast wheel features a compact design that meets the requirements for high performance and efficiency. Engineered using the latest technology, this series ensures ease of maintenance and high performance even under the most demanding operating conditions, and is available in a range of sizes and power ratings.
Technical parameters
Model (Cable)
FL-3-22(30)/38
FL-3-30/55 FL-3-37/55
FL-4-30/55 FL-4-37/55
FL-6-30/55
Max diameter (mm)
38
55
55
55
No. of blast wheel
4
4
4
6
Single Blast Wheel Power (kW)
22
30/37
30/37
30
Model (bars, billets)
FL-4-37/85 FL-4-37/110
FL-6-30/130
Max diameter (mm)
110-230
130-750
No. of blast wheel
4
6-8
Single Blast Wheel Power (kW)
30/45
45
This machine is equipped with the HAI Ocean Surge® direct-coupled high-efficiency blast wheel (German design with independent patents, Patent No.: ZL 2015 2 0702933.5).
The blast wheel is the heart of a shot blasting machine, and its design determines the performance of the entire system. The HAI Pengpai® blast wheel comes as standard equipment, delivering superior blasting performance. Available in a variety of sizes and materials, the H-series blast wheel ensures flexibility across diverse manufacturing processes. Its key advantages include enhanced blasting performance, reduced abrasive consumption, significantly extended equipment uptime, and effective noise reduction.The casing is lined with curved, multi-layer labyrinth-style sealing plates; the hot zone features a thickness of 70mm, ensuring excellent sealing performance and a uniform distribution of the projected abrasive media over an expanded coverage area. The internal design allows for the adjustment of abrasive trajectories, thereby enhancing blasting efficiency and minimizing self-wear. Additionally, a specialized dynamic design boosts efficiency by 30% compared to standard blast wheels.
Selected Cases of KEEJOO Roller Conveyor Steel Shot Blasting Machine
245 sets of section steel shot blasting machines manufactured for Hangxiao Steel Structure Company
16 sets of section steel shot blasting machines manufactured for Hangzhou Southeast Grid
9 sets of section steel shot blasting machines manufactured for China Construction Steel Structure Tianjin Company
8 sets of through-type shot blasting machines manufactured for Shanghai Baoye Steel Structure
So far, the performance of more than 600 set-type steel pass-through shot blasting machines at home and abroad is far ahead.
......
A large listed domestic agricultural equipment group phased out its outdated shot blasting machines in the past two years and fully adopted hook-type shot blasting machines independently developed and manufactured by Qingdao KEEJOO Group. Up to now, the group has purchased a total of 58 units.........
The various shot blasting machines manufactured by Qingdao KEEJOO Group for European clients are highly acclaimed and well-received.!
Introduction to the Components of the Shot Blasting Machine
1Blast wheel
1. The blast wheel and motor adopt Germany-joint developed high-efficiency HP technology. Compared with conventional old-style blast wheels, this design eliminates multiple friction loss links, lifting motor efficiency by 20%, cutting down fault points and slashing maintenance costs by 50%.
2. features a more compact footprint than traditional blast wheels, supports arbitrary installation angle arrangement, and enables far easier inspection and maintenance.
3. Constant blasting performance is maintained throughout operation, free from inconsistent and fluctuating cleaning quality seen on conventional units.
4. Blades and all wear-resistant consumables are manufactured in Taiwan via high-chromium investment precision casting, delivering outstanding abrasion resistance. Their service life ranges from 1,200 to 4,000 hours, 3–4 times longer than ordinary casting materials.
5. Blast wheel impeller: Treated with carburizing wear-resistant alloy. The impeller hub is one-time finished by high-precision CNC machining centers for ultra-high dimensional accuracy, ensuring perfect dynamic balance during high-speed rotation, low vibration, low noise and extended service life.
6. Equipped with SKF bearings imported from Sweden.
7. Fitted with genuine Siemens motors.
8. German Schenck dynamic balancing tester is applied to guarantee precise high-speed dynamic balance of impeller hubs.
2Flow control valve
1. Semi-automatic flow control system for regulating the flow of abrasive media into the blast wheel, featuring manual adjustment of the steel shot flow rate.
2. Fully sealed structural design, featuring a lockable inspection opening and equipped with two bearings.
3. A manual shut-off valve is installed above each flow valve; this can be closed to stop the flow of media from the hopper, thereby facilitating maintenance of the flow valve.
3Blasting chamber
1.The shot blasting chamber is constructed from welded manganese steel.
2. Manganese steel protective plates are installed in the "hot zone" of the chamber—specifically covering three-quarters of the area directly exposed to the blast stream—to prevent steel shot from striking the chamber's outer walls; these plates are suspended for easy installation, removal, and replacement.
3. A three-layer sealing structure is installed at the top to prevent steel shot from leaking out during the blasting process.
4Variable-frequency automatic speed-regulating conveyor system (comprising an infeed roller conveyor, a shot-blasting zone roller conveyor, and an outfeed roller conveyor with automatic speed regulation)
Roller conveyor pass-through type:
1. The workpiece conveying system for the entire production line utilizes stepless variable-frequency speed control and consists of an input roller conveyor, a shot-blasting chamber roller conveyor, and an output roller conveyor.
2. The rollers for both the input and output roller tables are manufactured by welding heat-treated shaft ends to high-quality carbon steel seamless pipes, followed by integral machining on a lathe. Machining is performed after welding to ensure both a load-bearing capacity of 0.5 t/m and precise coaxiality.
3. The rollers within the shot blasting chamber that are subjected to the impact of the shot are all fitted with easily replaceable, wear-resistant sleeves made of special high-chromium-molybdenum iron.
4. The roller pitch is 600–800 mm, and the entire line utilizes variable-frequency speed control, enabling both high-speed and low-speed workpiece transport.
Wire mesh-belt conveyor type:
1. The system comprises dozens of transmission components, including carbon steel rollers, sprockets and chains, mesh belts, and bearings. The roller conveyor is divided into three sections: the infeed section, the shot-blasting section, and the discharge section. The rollers are constructed by precision-welding quenched-and-tempered end caps to high-quality seamless carbon steel pipes; their profiles and mounting dimensions are machined after welding to ensure compliance with load-bearing and coaxiality requirements.
2. The roller conveyors inside the blast chamber are equipped with easily replaceable wear-resistant medium-chromium cast iron sleeves. Labyrinth seals made of wear-resistant manganese steel are used at both ends of the roller shafts, completely preventing abrasive media from wearing down the bearings.
3. Utilizes imported HD wear-resistant manganese steel that has undergone solution and tempering treatments to eliminate internal residual stresses, moderately reduce the hardness of the manganese steel wire, and enhance its toughness and ductility.
4. A geared drive motor is installed on the right side of the conveyor belt and directly coupled to the drive roller, propelling both the belt and the workpieces; variable frequency speed control is employed, providing a conveying speed of 0.5–4 m/min.
5. A roller is installed under the driving shaft to serve as a guide and tensioner. When the steel mesh belt is loose, it can be tightened through this mechanism.
5Light curtain sensing system, automatic loading system/automatic unloading system
1. Two sets of light curtain sensing units are installed at the infeed and outfeed openings, respectively; the light curtain resolution can be selected based on workpiece size, and the units are used in pairs.
2. When a workpiece enters the shot blasting chamber, a light curtain at the inlet detects its presence, triggering a delayed start of the blast wheels. A light curtain sensor is also installed at the outlet; when the inlet and outlet sensors detect that no workpieces are passing through, the flow valve closes automatically and immediately to prevent "air blasting" (blasting without a workpiece present).
6Sorting system
1. A mesh screen separator is connected to the elevator and positioned above the magnetic separator; fine material passes through the screen into the magnetic separator, while coarse material and impurities are conveyed by a spiral mechanism along the screen to the discharge port at the rear.
2. It is designed to finely separate usable shot, broken shot, and dust, ensuring the uniformity of the shot media.
3.Featuring a welded structure, the interior contains multiple carefully designed compartments for airflow guidance. An access door on the front allows for routine inspection and maintenance; this door is equipped with an air inlet to provide the necessary airflow for dust separation.
4. An adjustable multi-vane baffle structure is used to regulate the uniformity of the falling abrasive curtain.
5. Stationary magnets installed at both the top and bottom enable the fine separation of usable shot from broken steel shot, ensuring the consistency of the blast media.
6. A storage hopper is connected at the bottom; after separation, the usable shot flows into the hopper for storage and subsequent reuse.
7Electrical control cabinet
1. Siemens PLC and touch screen
2.Siemens variable frequency drive (VFD) for speed control
3.Schneider low-voltage electrical components
4.Shot blasting time controller
5. AirTAC pneumatic components
6. Ammeter for flow monitoring
7.1 lighting fixture
8.Dedicated constant-temperature air conditioning unit (optional)
8Dust collector
Pulse-jet cleaning system
Precision filter cartridge filtration system
High-efficiency three-stage dust removal
Optimized and upgraded Donaldson (USA) dust removal technology system
Standard configuration：
1
Electrical cabinet: This model comes standard with a cooling fan; air conditioning is available as an option.
2
Programmable Logic Controller (PLC): Siemens (other brands available as options upon customer request)
3
Touchscreen: Siemens (other brands available as options upon customer request)
4
Variable Frequency Drive (VFD): Inovance (China) — (Specific brands can be designated upon customer request; we recommend our domestic brand, as its quality is on par with or superior to Siemens.)
5
Power supply voltage: AC 380V, three-phase five-wire system
6
Low-voltage electrical components: Schneider (other brands available upon customer request)
7
Pneumatic components: ARITAC series (other brands available upon customer request)
8
Wires and cables
9
Qingdao KEEJOO Group can also customize various non-standard shot blasting machines according to your requirements.
Qingdao KEEJOO Group comprises three subsidiaries and an international business division, standing as a leading Asian manufacturer of high-end shot blasting and peening machinery, as well as environmental protection equipment. The company has introduced and developed over 100 types of shot blasting and peening machines for cleaning and surface strengthening; more than 20 of these products have filled gaps in the domestic market. Its products are utilized by renowned enterprises such as ThyssenKrupp, Siemens, FAW-Volkswagen, Cummins Engine, Dongfeng Motor, Weichai Power, Sinotruk (Jinan), China High-Speed Rail, Bombardier, Chery Automobile, North Benz, Hitachi Nuclear, Sany Heavy Industry, Fuji Heavy Industries, Tangshan Gear, Aisin (Japan), Alstom (France), Doosan (South Korea), and Caterpillar (USA). With exports reaching 49 countries—including Spain, France, the USA, South Korea, Japan, Singapore, Australia, and Russia—the company enjoys an excellent global and domestic reputation.
In recent years, by introducing and assimilating advanced technologies from companies such as Germany's AGTOS, KEEJOO has achieved a world-class level in product design. The company's high-efficiency, direct-drive shot blasting wheel—representing the best of Asian technology in this field—has garnered praise and recommendations from customers in Europe and the Americas.
The company was among the first in China's casting machinery industry to obtain ISO 9001, German TÜV, EU CE, French BV, and North American FCC certifications, as well as import-export rights. By introducing and further optimizing technologies from Germany, the United States, and other regions, the company has enhanced product performance and accelerated the phase-out of outdated technologies, earning recognition from new and existing customers worldwide.
Next step？
Spare Parts and Consumables
We provide high-quality replacement parts with extended service lives. As a major supplier of spare parts in the industry, we offer rapid global delivery, helping you avoid the need for large inventories and preventing production downtime.
High-end shot blasting unit manufacturing workshop
Equipment Upgrade
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