Recently, 40 cartridge heaters we produced for an oil equipment maintenance enterprise in Moscow, Russia, have successfully passed customer acceptance and been shipped to the customer's factory. The enterprise is mainly responsible for the maintenance and repair of oil drilling equipment. Since some oil fields in Russia are located in Siberia, where the winter temperature drops to -40℃, the cartridge heaters of the original heating system cannot meet the heating needs in low-temperature environments, leading to difficult equipment startup and unstable operation.
After receiving the customer's demand, our sales team and technical personnel went to the customer's factory for on-site investigation. The customer's oil drilling equipment is a rotary drilling rig. The original heating system's cartridge heaters have a diameter of 18mm and length of 1000mm, but due to low power density, the heating speed is slow. In low-temperature environments, it cannot raise the temperature of the equipment's hydraulic oil to the normal working temperature (above 20℃), leading to equipment startup time exceeding 2 hours, or even unable to start. According to the customer's production needs, we recommended cartridge heaters with a diameter of 18mm and length of 1000mm, using 304 stainless steel sheath, with the surface power density set to 20W/cm² to ensure rapid heating and stable heating, while having good low-temperature resistance.
During production, we strictly produced in accordance with Russian electrical safety standards. All raw materials passed GOST certification. The wire winding process used fully automatic equipment to ensure that the resistance value deviation of the heating wire was controlled within ±2%, ensuring consistent power of each cartridge heater. The filled magnesium oxide powder underwent special low-temperature treatment, and its insulation performance remained stable in low-temperature environments. The pipe shrinking process used CNC equipment to uniformly shrink the pipe diameter, avoiding uneven local wall thickness.
In the inspection link, each cartridge heater underwent power-on testing in a -40℃ environment, taking only 30 minutes to rise to 20℃, meeting the customer's low-temperature startup requirements; the insulation resistance test results were all >=80MΩ, and the leakage current <=0.3mA, meeting Russian electrical safety standards. In addition, we simulated the customer's production environment, installed the cartridge heaters on a test oil drilling equipment, and conducted three low-temperature startup tests. The equipment startup time was shortened from 2 hours to 30 minutes, and the operation was stable, fully meeting the customer's needs.
In the packaging link, waterproof and cold-resistant wooden boxes were used, with each cartridge heater independently wrapped to avoid collision damage during transportation. The attached inspection report includes raw material testing report, low-temperature power-on testing report, insulation resistance testing report, etc., facilitating customer quality traceability.
The customer's technical director stated after acceptance that the performance of these cartridge heaters exceeded expectations. After installation and commissioning, the startup time of the oil drilling equipment in low-temperature environments was greatly shortened, and the operation stability was significantly improved. Our after-sales team will regularly visit the customer to understand the equipment operation and provide timely technical support and maintenance services.
