Lubricating Oil Selection for Circular Knitting Machine
Dec 30, 2023
The selection of lubricating oils for circular knitting machines is significantly influenced by various factors such as viscosity, oxidation resistance, compatibility with digitalized needle selecting machines, and their performance with different fibers under varying temperatures.
Wearing Resistance:
Circular knitting machines operate under complex conditions, necessitating the use of lubricating oils with diverse rolling frictions. While laboratory tests like the 4-ball machine test may not always align with on-site requirements, the SRX test offers a more scientific simulation of real-world conditions. The SRX test particularly emphasizes friction coefficients under different loads and periods. Additionally, the mobility and corrosion resistance of lubricating oils should be considered.
Washing:
The presence of different solvents in various yarn types, such as paraffin and spindle oils, can impact the elimination of oil needles. Knitting oil can form oil needles on knitted fabric surfaces, and proper washing is crucial. Laboratory classification into five washing levels lacks unified quantized data for precise definition. With the emergence of new gray fabrics using cotton yarn, terylene, or cotton Dacron, there are new requirements for the washing performance of lubrication oils.
Compatibility of Elastic Fibers:
Often overlooked in the market, the compatibility of elastic fibers is vital. Over time, stored knitted fabrics may lead to the oxidation of oil spots on grey fabrics. Oil spots, especially under high temperatures, can cause elastic fibers to lose elasticity or experience uneven breakage. The resulting fabrics, after being set, may only reveal these issues under specific light conditions.
In conclusion, understanding and addressing factors like wearing resistance, washing efficacy, and compatibility with elastic fibers are essential in the selection of lubricating oils for circular knitting machines, ensuring optimal performance and fabric quality.
Wearing Resistance:
Circular knitting machines operate under complex conditions, necessitating the use of lubricating oils with diverse rolling frictions. While laboratory tests like the 4-ball machine test may not always align with on-site requirements, the SRX test offers a more scientific simulation of real-world conditions. The SRX test particularly emphasizes friction coefficients under different loads and periods. Additionally, the mobility and corrosion resistance of lubricating oils should be considered.
Washing:
The presence of different solvents in various yarn types, such as paraffin and spindle oils, can impact the elimination of oil needles. Knitting oil can form oil needles on knitted fabric surfaces, and proper washing is crucial. Laboratory classification into five washing levels lacks unified quantized data for precise definition. With the emergence of new gray fabrics using cotton yarn, terylene, or cotton Dacron, there are new requirements for the washing performance of lubrication oils.
Compatibility of Elastic Fibers:
Often overlooked in the market, the compatibility of elastic fibers is vital. Over time, stored knitted fabrics may lead to the oxidation of oil spots on grey fabrics. Oil spots, especially under high temperatures, can cause elastic fibers to lose elasticity or experience uneven breakage. The resulting fabrics, after being set, may only reveal these issues under specific light conditions.
In conclusion, understanding and addressing factors like wearing resistance, washing efficacy, and compatibility with elastic fibers are essential in the selection of lubricating oils for circular knitting machines, ensuring optimal performance and fabric quality.
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