quality Clay Brick Making Machine & Brick Tunnel Kiln manufacturer

.gtr-container-d9e2f1 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; line-height: 1.6; padding: 15px; max-width: 100%; box-sizing: border-box; } .gtr-container-d9e2f1 p { font-size: 14px; margin-bottom: 1em; text-align: left !important; word-break: normal; overflow-wrap: normal; } .gtr-container-d9e2f1 .gtr-title-main { font-size: 18px; font-weight: bold; margin-bottom: 1.5em; color: #0000FF; text-align: left; } .gtr-container-d9e2f1 .gtr-section-heading { font-size: 16px; font-weight: bold; margin-top: 2em; margin-bottom: 1em; color: #333; text-align: left; } .gtr-container-d9e2f1 .gtr-sub-section-heading { font-size: 14px; font-weight: bold; margin-top: 1.5em; margin-bottom: 0.8em; color: #555; text-align: left; } .gtr-container-d9e2f1 .gtr-divider { border-top: 1px solid #eee; margin: 2em 0; } .gtr-container-d9e2f1 ul { list-style: none !important; padding-left: 20px; margin-bottom: 1em; } .gtr-container-d9e2f1 ul li { position: relative; padding-left: 15px; margin-bottom: 0.5em; font-size: 14px; text-align: left !important; list-style: none !important; } .gtr-container-d9e2f1 ul li::before { content: "•" !important; color: #0000FF; position: absolute !important; left: 0 !important; font-size: 1.2em; line-height: 1; } .gtr-container-d9e2f1 ol { list-style: none !important; padding-left: 25px; margin-bottom: 1em; counter-reset: list-item; } .gtr-container-d9e2f1 ol li { position: relative; padding-left: 15px; margin-bottom: 0.5em; font-size: 14px; text-align: left !important; list-style: none !important; } .gtr-container-d9e2f1 ol li::before { content: counter(list-item) "." !important; color: #0000FF; position: absolute !important; left: 0 !important; font-weight: bold; width: 20px; text-align: right; } .gtr-container-d9e2f1 .gtr-image-wrapper { margin: 2em 0; } @media (min-width: 768px) { .gtr-container-d9e2f1 { padding: 30px 50px; max-width: 960px; margin: 0 auto; } .gtr-container-d9e2f1 .gtr-title-main { font-size: 24px; } .gtr-container-d9e2f1 .gtr-section-heading { font-size: 20px; } .gtr-container-d9e2f1 .gtr-sub-section-heading { font-size: 16px; } } Causes and Non-Disassembly Correction of Bent Extruder Auger Shaft Maintenance Guide for Brick and Tile Production Equipment In clay fired brick production lines, the extruder is the core forming equipment, while the auger shaft is one of the most critical transmission components within the extruder. The auger shaft is responsible for transmitting most of the torque generated during operation and for conveying clay materials forward under pressure. Therefore, its operating condition directly affects the forming quality of green bricks as well as the operational stability of the equipment. During long-term production, due to complex raw material conditions and variations in equipment load, bending or deformation of the auger shaft is a relatively common mechanical problem. If not addressed promptly, it may lead to abnormal equipment operation, mechanical damage, or even production shutdown. Based on practical maintenance experience in the brick and tile industry, this paper introduces a practical on-site correction method that does not require disassembling the extruder, which is especially suitable for small and medium-sized brick factories with limited maintenance capability. 1. Structural Characteristics of the Extruder Auger Shaft The auger shaft is a key transmission component inside the extruder and has the following structural characteristics. High Torque Transmission During the extrusion process, the auger shaft continuously transmits mechanical power while pushing the clay material toward the die head. Tangential Key Slots In order to mount the auger blades, the shaft is usually designed with two tangential keyways. Although this structure facilitates blade installation, compared with a solid shaft of the same diameter, its bending strength and torsional strength are relatively reduced. Material and Manufacturing Characteristics In traditional brick machinery manufacturing, due to equipment limitations, many auger shafts do not undergo quenching and tempering heat treatment. According to general mechanical manufacturing standards, transmission shafts that do not undergo proper heat treatment tend to have lower fatigue resistance and impact strength, which increases the possibility of deformation during long-term operation. 2. Main Causes of Auger Shaft Bending In practical brick production, the bending of the extruder auger shaft is mainly caused by the following factors. 2.1 Variation in Raw Material Properties Raw material conditions vary significantly among different brick factories, such as: Differences in plasticity index Fluctuations in moisture content Unstable particle size distribution These factors cause significant fluctuations in the operating load of the extruder, resulting in periodic alternating torque on the auger shaft. 2.2 Poor Raw Material Processing If the raw material is not properly processed, it may contain: Stones Metal fragments Hard impurities When these foreign objects enter the extruder, they generate instantaneous impact loads, which may cause bending or even twisting of the auger shaft. 2.3 Changes in Product Specifications When producing different types of bricks, such as: Perforated bricks Insulated hollow blocks Standard clay bricks the extrusion pressure varies significantly, which imposes different levels of mechanical load on the auger shaft. 2.4 Long-Term High Load Operation Extruders are typically continuous production equipment. Long-term operation under high load conditions accelerates the fatigue deformation of the auger shaft. 3. Typical Symptoms of Auger Shaft Bending When the auger shaft becomes bent, the following phenomena usually occur: Significant increase in die head oscillation Fluctuation in extrusion pressure Local friction between the auger and the barrel liner Increased vibration and noise of the equipment In severe cases, the auger blades may directly collide with the barrel lining, posing a serious threat to equipment safety. It should be noted that: Bending of the auger shaft can be corrected, but torsional deformation cannot be repaired without disassembly and replacement. 4. Non-Disassembly Correction Method for Extruder Auger Shaft For brick factories with limited financial resources or maintenance capability, on-site flame straightening can be used to repair the shaft. The specific procedure is as follows. Step 1: Remove the Auger Blades All auger blades mounted on the shaft must be removed so that the shaft body is completely exposed. Step 2: Determine the Bending Position Manually rotate the auger shaft and use a scriber or dial indicator to determine: The highest bending point The lowest bending point The center of the bending position These locations should be clearly marked. In most cases, bending occurs near the root of the front bearing. Step 3: Bearing Protection To prevent damage to the bearings during heating, protective measures should be taken: Wrap asbestos rope around the shaft at the bottom of the feed box Apply wet clay material outside the asbestos layer This insulation prevents heat from transferring to the bearing and avoids bearing annealing. Step 4: Shaft Support Place the following support tools under the bending position: Steel shims V-shaped support blocks This ensures that the bearings will not be damaged during the correction process. Step 5: Flame Heating and Straightening Use an oxy-acetylene flame to heat the bent section of the shaft evenly. Once the shaft surface reaches a uniform red-hot state, strike the far end of the shaft using an approximately 18-pound hammer to gradually correct the shaft alignment. During the process, continuously check the shaft alignment with a measuring tool to prevent overcorrection. After correction, the acceptable tolerance is: Auger shaft bending ≤ 1 mm which is sufficient for normal extruder operation. 5. Heat Treatment Reinforcement After Correction Flame straightening may reduce the fatigue strength of the heated area. Therefore, local surface hardening treatment is recommended. Procedure Heat the shaft surface using an oxy-acetylene flame Heating temperature: 830–850°C Rapidly cool the heated area with water Utilize the internal heat of the shaft for tempering Tempering Color Changes During tempering, the surface color typically changes as follows: White → Yellow → Blue When the surface turns blue, immediately cool the shaft with water to stabilize the hardness. Final Requirement The final hardness of the shaft surface should be: ≤ HRC 30 This level ensures sufficient wear resistance while maintaining material toughness. 6. Economic Benefits of On-Site Repair For many small and medium-sized brick factories, replacing an auger shaft is costly. For example: Additional costs include transportation, labor, and downtime losses In many cases, the total economic loss may reach several times the cost of the shaft itself. Using the on-site correction method can: Avoid long production shutdowns Reduce maintenance costs Improve equipment utilization 7. Conclusion Practical experience has proven that on-site flame straightening of a bent extruder auger shaft is an economical, practical, and effective maintenance method. The technique has several advantages: No need to dismantle the equipment Short maintenance time Low repair cost Simple operation For small and medium-sized brick factories with limited maintenance facilities, this method has high practical value and strong potential for industry promotion. Through proper equipment maintenance and scientific repair methods, the service life of key extruder components can be significantly extended, ensuring the stable operation of the brick production line.

Xi’an Brictec GCS Tunnel Kiln Burners Shipped to Fujian I. Supporting Green Roasting Production for New Energy Lithium Battery Materials On March 6, 2026, the GCS tunnel kiln burners and fully automatic tubular chain conveyor system, independently developed and manufactured by Xi’an Brictec Machinery Equipment Manufacturing Co., Ltd., were officially dispatched to Fujian. This equipment will be applied to the new energy materials roasting project of Fujian Yongjiu Lithium New Materials Co., Ltd. The shipment will serve the "graphite and carbon materials roasting process" within the new energy new materials sector, providing core thermal equipment that is efficient, stable, and energy-saving for lithium battery material production.   Serving Critical Processes in New Energy Material Roasting With the rapid development of the global new energy industry, the demand for efficient and stable roasting processes for lithium battery materials is constantly increasing. The production line currently being constructed by Fujian Yongjiu Lithium New Materials Co., Ltd. is primarily used for the roasting and processing of new energy battery materials, involving a variety of critical materials, including: • Artificial graphite anode materials • Silicon-carbon anode materials • Hard carbon materials • Ternary cathode materials • Lithium manganese oxide • Lithium cobalt oxide, and other lithium battery cathode materials   The production of these materials requires high-temperature roasting processes in tunnel kilns to achieve structural stabilization and performance enhancement. This places stringent demands on the combustion system's stability, temperature control precision, and energy utilization efficiency. GCS Burner System Facilitates Green Manufacturing Addressing the specific requirements of new energy material roasting processes, the GCS series burner, independently developed by Xi’an Brictec Machinery Equipment Manufacturing Co., Ltd., demonstrates significant advantages in combustion efficiency, stability, and energy utilization. II. This Project Utilizes the Following Supporting Equipment: • 8 GCS tunnel kiln burners • 1 fully automatic tubular chain conveyor system   III. The System Features the Following Technical Characteristics: 1. High Energy Utilization Efficiency: The GCS burner achieves complete fuel combustion and improves thermal efficiency through an optimized combustion structure design, effectively reducing natural gas consumption. 2. Resource Utilization of Waste Materials: The system enables the resourceful reuse of certain production waste materials, reducing energy costs and improving overall economic benefits while ensuring stable combustion. 3. Strong Combustion Stability: The combustion system possesses stable flame control capabilities, meeting the stringent requirements for temperature uniformity and stability during the roasting of new energy materials. 4. High Level of Automation: The supporting fully automatic tubular chain conveyor system enables automated material conveying and continuous feeding, enhancing production efficiency, reducing labor costs, and promoting Green Production of New Energy Materials   The successful shipment of this equipment marks a new breakthrough for Xi’an Brictec in the application of thermal equipment technology within the new energy lithium battery material sector. The GCS burner system not only meets the high standards required for new energy material roasting processes but also, through energy optimization and resource recycling, provides reliable support for new energy material manufacturers to achieve energy savings, consumption reduction, green manufacturing, and intelligent production.   IV. Continuously Supporting the Development of the New Energy Industry Moving forward, Xi’an Brictec Machinery Equipment Manufacturing Co., Ltd. will continue to increase its R&D investment in industrial combustion technology and thermal equipment, actively serving strategic industries such as new energy and new materials. The company is committed to providing customers with more efficient, energy-saving, and environmentally friendly combustion system solutions, contributing to the high-quality development of the new energy industry. Editors: JF & LW 2026.03.06

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The tunnel drying chamber consists of 15 sections and uses one W9-57-101N16B centrifugal fan for centralized heat supply and another fan of the same model for centralized moisture exhaust. This air supply and exhaust arrangement has the following drawbacks: Inconsistent moisture exhaust conditions, resulting in uneven drying of the green bricks. Drying proceeds faster near the exhaust fan and slower farther away. Rapid corrosion of the exhaust fan impeller and casing; one impeller requires replacement in less than one year. Replacement of a new impeller requires at least two days of intensive work, forcing shutdown of the brick machines and drying chambers, while the Hoffman kiln remains in a dormant, fire-stopped production state. To address this issue, the factory drew on experience with axial-flow fans for sectional moisture exhaust. The motor was positioned outside the fan to prevent damage. Accordingly, a 45° cast-iron casing and cast-aluminum blades were designed, with the motor mounted externally on the moisture exhaust fan. After adopting this fan, drying conditions in each tunnel section became uniform, significantly improving drying uniformity and efficiency, reducing power consumption and scrap losses, and eliminating production stoppages for fan maintenance. As shown in Table 6-2, sectional moisture exhaust using this fan offers clear advantages over centralized moisture exhaust.Table 6-2 Comparison Item Unit Centralized Exhaust Sectional Exhaust Comparison between the Two Total Air Volume m³/h 85,000~92,000 106,300~112,200 Increase 18~25% Total Motor Power kW 55 45 Reduction 18% Brick Entry Time min 22 22 Equal Output pcs/double shift 178,200 178,200 Equal Drying Degree % Average 60 Average 85 Increase 25% Scrap Loss % Average 10 Average 3 Reduction 7% In summary, the results of sectional moisture exhaust are highly significant. However, the first-generation moisture exhaust fan still had the following shortcomings: The fan body was relatively bulky; Because the blades were located at the bottom, disassembly and replacement during maintenance were extremely inconvenient; operators had to squat inside the tunnel, where flue gas caused severe choking; Due to the motor being directly sleeved, after prolonged operation the lubricating oil in the bearings leaked out. When oil starvation occurred, the motor was prone to damage. In response to the above issues, a horizontal 90° moisture exhaust fan was subsequently designed (Figure 6-10). After commissioning and trial operation, the results were excellent. Figure 6-10 Schematic Diagram of Moisture Exhaust Fan 1—Electric Motor; 2—Belt Drive; 3—Impeller; 4—Air Outlet; 5—Flange; 6—Air Duct