In the automobile manufacturing industry, the quality of oil filter, fuel filter and other core components directly affects the overall performance and service life of the engine. The welding process of threaded cover plate and mounting plate of automobile diesel engine filters is a key link to determine the reliability of the product. As a professional welding machine supplier and welding machine manufacturer, we focus on providing high-performance spot welding machines tailored to the production needs of auto filter. In this paper, how to optimize the welding process of auto filters by pneumatic spot welding machine will be discussed in depth, and its definitions, unique advantages, product specifications and application scenarios will be elaborated in detail, and the frequently asked questions will be answered, so as to provide authoritative and operable reference for industry.
A pneumatic spot welding machine is a kind of special welding equipment which relies on compressed air to provide stable welding pressure and realizes the connection of metal workpieces through resistance heating principle. Specifically, the workpiece is clamped at the predetermined welding point between two electrodes. When a strong current passes through the electrodes and the workpiece, the contact point generates heat due to resistance, melting the local metal to form a nugget, and finally forming a firm joint under the pressure. Different from manual welding equipment, pneumatic spot welding machine relies on automatic control systems to complete the welding process, which is more suitable for mass production scenes that require high accuracy and consistency.
The pneumatic spot welding machine discussed in this paper is specially designed for the welding application between the threaded cover plate and mounting plate of the automobile diesel engine filters, which is the target product developed by our welding machine manufacturer according to the special needs of auto filter industry.
[Source link for definition: Alibaba.com – Pneumatic Spot Welding Machine Definition]
The application value of pneumatic spot welding machine in auto filter industry has been supported by authoritative market data, which reflects the demand for high efficiency and high quality welding equipment in the industry.
Data: According to the Research Report on the Global Welding Filter Market in 2025, the global welding filter market in 2024 is estimated to be US$ 3,003.3 million, and the CAGR is expected to be 4.5% during the forecast. The growth of the market is closely related to the growing demand for high-precision welding in auto filter industry. High-quality welding equipment, such as pneumatic spot welding machines, is an important guarantee for producing high-performance welding filters.
[Source link:MarketPublishers.com – Global Welding Filter Market Report]
As a professional welder supplier, we have optimized the design of this pneumatic spot welder according to the welding characteristics in auto filter, and its unique advantages are mainly reflected in the following aspects.
Short welding cycle and high production efficiency: the machine is designed with high power of 100 KVA, which can quickly complete the welding of the threaded cover plate of the filter and mounting plate. The short welding cycle ensures that it can adapt to the mass production needs of automotive filters, helping manufacturers improve production capacity.
Stable quality and high welding precision: depending on the automatic welding sequence of stages, the controller carries out accurate welding stages, thus avoiding the quality instability caused by manual operation. The welding pressure is stable at 0.4 Mpa, ensuring that each weld nugget is uniform and firm, and the welding qualification rate is greatly improved.
Strong adaptability and targeted design: this machine is specially designed for oil filters and fuel filters, and its structural parameters perfectly match the welding requirements of these two types of filters. The problems of unmatched welding parameters and poor welding effect in general spot welding machines can be effectively avoided.
Reliable performance and easy maintenance: the product is made in Hebei, China and has strict quality control. It provides a 1-year warranty period, and the main components have good durability. The daily maintenance only needs to regularly check the air pressure and clean the electrodes, which reduces the maintenance cost for manufacturers.
The detailed specifications of this pneumatic spot welder are shown in the following table, which can help welder manufacturing partners and end users to fully understand the product parameters.
| Specification Items | Detailed Parameters |
| Capacity | 100KVA |
| Voltage | 380V |
| Working pressure | 0.4Mpa |
| Weighing | 700kg |
| Dimensions | 1070x520x1800mm |
| Place of origin | Hebei, China |
| Warranty | 1 year |
| Packaging details | Winding film |
This pneumatic spot welding machines is developed for auto filter industry, and its core application scenarios is the welding of oil filters and fuel filters, especially the welding between the threaded cover plate and mounting plate of automobile diesel filters. In these application scenarios, the machine can play the following roles.
Oil Filter Production: In the assembly process of oil filters, the connection between the threaded cover plate and the mounting plate needs to have good airtightness and structural strength to prevent oil leakage. This machine can realize precise welding of the two components, ensuring the sealing performance and service life of the oil filter.
Fuel Filter Production: Fuel filters need to withstand certain pressure during use, and the welding quality directly affects the safety and reliability of the filter. The machine has stable welding quality and high precision, which can meet the strict requirements of fuel filter production and ensure the filter to work stably in complex working environment.
In addition, as a professional welding machine supplier, we can also provide customized adjustments according to the specific models of filters of different automobile manufacturers, so as to expand the application scope of machines.
The machine adopts automatic welding sequence in stages, and the operation steps are simple and easy to master. The concrete steps are as follows.
Preparation: First, check whether the power supply (380 v) is stable, confirm that the working air pressure reaches 0.4 Mpa, and check the cleanliness of the electrodes to ensure that there are no sundries and oxide layer. At the same time, prepare the threaded cover plate and mounting plate of the filter to be welded, and ensure that the surface is clean and pollution-free.
Parameter Setting: According to the type and thickness of the filtered workpiece, the welding parameters are set through the controller. The parameters of engine oil filter and fuel oil filter are preset in the machine, which can be directly called and fine-tuned when needed.
Workpiece positioning: Put the threaded cover plate and mounting plate of the filter at the predetermined welding position to ensure accurate positioning and avoid welding deviation.
Automatic welding: Switch the machine to the automatic mode, press the start button, and the machine will execute the automatic welding procedure in stages according to the preset procedure. The controller will accurately control each welding stage, including electrode pressurization, current application, insulation and electrode retraction.
Workpiece inspection and removal: after the welding cycle is completed, the machine will be automatically reset. Take out the welding workpiece, check the welding quality (such as whether the weld nugget is complete or not, and whether there is virtual welding), and enter the next process after passing the inspection; If unqualified, adjust the parameters and re-weld.
A 1: this machine is specially designed for the welding the threaded cover plate and mounting plate of automobile diesel engine filters, and is mainly suitable for the production of oil filters and fuel filters.
A 2: the product is guaranteed for 1 year. The warranty covers the main parts of the machine under normal use conditions (such as the controller, cylinders, etc.). Man-made damage, improper operation and natural wear and tear are not covered by the warranty. As a responsible supplier of electric welding machines, we also provide lifelong maintenance guidance.
A 3: the machine requires a stable 380 v power supply, a working air pressure of 0.4 Mpa, and a dry and well-ventilated working environment. The ambient temperature should be between-10 degrees Celsius and 40 degrees Celsius, and there should be no corrosive gas or strong electromagnetic interference around.
A 4: Yes, it is. The machine is modular in design and equipped with standard interface protocols, which can be easily integrated into the automatic production line in auto filters. It can realize seamless connection with equipment such as feeding, positioning and inspection, and further improving the degree of automation and production efficiency.
A 5: First, the specific welding requirements (such as the type of filter, the thickness of the workpiece, etc.) should be defined. Second, the key parameters of the machine (such as capacity, working pressure, etc.) should be paid attention to to to ensure that it matches the production needs; Finally, select professional welding machine manufacturer and supplier to ensure product quality and after-sales service.
For the production industry in auto filter, it is very important to choose a suitable pneumatic spot welder for improving production efficiency and ensuring product quality. This targeted pneumatic spot welding machine, with its short welding cycle, high precision, stable performance and other advantages, perfectly matches the welding needs of oil filters and fuel filters. As a professional welder manufacturer and supplier, we are committed to providing high-quality and targeted welding solutions for the automotive industry.Whether you are expanding production capacity or upgrading production equipment, this pneumatic spot welder is a reliable choice. If you have more questions about product customization, technical parameters or after-sales service, please contact us at any time.
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