Pipe bending machines are mainly used for pipeline laying and repair in power construction, public and railway construction, boilers, bridges, ships, furniture, decoration, and other aspects. They have the advantages of multiple functions, reasonable structure, simple operation, convenient movement, and fast installation.
The pipe bending machine produced by Taihe Machinery not only has the function of bending pipes, but also can use the oil cylinder as a hydraulic jack, which has the characteristics of low price and easy use, and occupies the leading product position in the domestic pipe bending machine market.
Factors Affecting the Bending Quality of a Pipe Bending Machine
During pure bending with a pipe bending machine, the outer wall of the pipe experiences tensile stress, causing it to thin, while the inner wall is subjected to compressive stress, leading to thickening. The resultant forces N1and N2 cause changes in the cross-sectional shape of the pipe. Due to this factor, the primary reasons for the decline in bending quality are related to the values of R/X and S/X. Therefore, in GBJ235-82, clear specifications are provided for the values of R/X and the thinning amount of the outer wall under different pressure levels. The purpose of these regulations is to control the values of R/X and S/Xto ensure quality.
During bending, the outer side of the material is stretched, and the inner side is compressed. The position of the neutral axis varies depending on the bending method. In compression bending (press bending), the neutral axis is located approximately one-third of the way from the outer wall, whereas in rotary bending (draw bending), it is positioned about two-thirds from the outer wall. Therefore, for thin-walled pipes, rotary bending is beneficial.
The accuracy of the bending die is another crucial factor affecting bending quality. During the manufacturing of bending dies, not only must the dimensional tolerances be controlled within a specified range, but users must also select the appropriate die based on the pipe diameter being bent.
Additionally, the bendability of the pipe material and surface corrosion conditions can impact the bending quality. During on-site operations, operators must understand the material properties of the pipe, its ability, and assess its surface corrosion condition.
The Impact of Lubrication on Product Quality During Pipe Bending
Lubrication plays a critical role in the forming process, directly affecting product quality. Proper lubrication reduces friction, prevents surface defects, and enhances the uniformity of material deformation, thereby improving bending precision and extending the service life of the bending dies.
In the traditional production process of pipe bending machines, enterprises will adopt many methods to obtain better surface quality of pipes, including using more advanced and high-end pipe bending machines, using stronger molds, or using lubricating products. By using high-end pipe bending machines and high-strength molds, enterprises often need to invest a significant amount of capital to complete the task. Only by using pipe bending lubrication products can the quality requirements of enterprise products be achieved relatively inexpensively and quickly. However, in traditional production processes, oil-based elbow lubrication products can meet the quality requirements of enterprises in elbow production.
However, the difficulty of cleaning and environmental pollution of oil-based elbow lubrication products are very prominent. Therefore, enterprises must adopt more means to eliminate the impact of using oil-based elbow lubrication products on the final product quality, and invest more energy and funds in this regard.
How IRMCO Water-based Grease Improve Pipe Bending
The arrival of IRMCO water-based grease for bent pipes not only meets the quality requirements of enterprises for bent pipe products, but also avoids and reduces the increased investment of enterprises due to the use of oil-based bent pipe lubrication products, completely optimizing the production process of enterprises.
In the application process of traditional oil-based lubrication products, the production efficiency of enterprises is constrained because the fluidity and difficulty in cleaning of oil-based lubrication products cause pollution to the production environment and workers’ working conditions. Enterprises often need to spend a lot of money, manpower and resources to clean up these pollutants.
By adopting the feature of direct welding without washing, which can reduce or even avoid the manpower and material resources required for cleaning up pollution for enterprises, the production efficiency and product quality of enterprises can be greatly improved. The amount of IRMCO water-based bending grease can usually be reduced by 50% -80% compared to traditional lubricants, which can save more costs for enterprises.
