Processing technology and equipment for steel integral heterotype oil control ring wire rod moulding
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An oil control ring and wire forming technology is applied in the manufacturing field of steel integral special-shaped oil control ring wire forming. problems, to achieve the effect of good product quality, convenient daily maintenance and small deformation
Active Publication Date: 2014-09-10
福建东亚机械有限公司
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[0002] The wire used for the steel overall special-shaped oil control ring of the internal combustion engine piston ring has a complex cross-sectional shape and requires high dimensional accuracy. At present, only a few foreign manufacturers can produce such products, and the price is expensive. Although domestic manufacturers have trial-produced such products, but Due to various technical difficulties, not only the shape accuracy and dimensional accuracy cannot meet the requirements, but also the inherent quality and performance are unstable, making it difficult to meet the production needs of piston ring manufacturers
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Embodiment 1
[0039] Processing a kind of (2.03±0.015)×(2.03±0.020) specifications, 6Cr13Mo high chromium stainless steel as the base material piston ring special-shaped integral oil control ring wire, the processing method is as follows:
[0040] (1) Selection of steel wire: Select a wire diameter of φ2.7 mm, and the material is 6Cr13Mo high-chromium stainless steel round steel wire.
[0041](2) Rolling process: the original wire rod is linearly routed through two narrow strip rolling mills and three four-roller drawing die forming wire rod rolling equipment, drawn by the wire drawing machine, and continuously rolled on the upper, lower, left, and right sides of the wire rod at the same time into a rectangular wire;
[0042] (3) Annealing process: After rolling, the wire rod passes through a special annealing long furnace for continuous annealing at an annealing temperature of 930°C to 680°C. After annealing, it is rolled and annealed to obtain a shaped wire rod with a rectangular cross-se...
Embodiment 2
[0051] Processing a kind of (4.12±0.015)×(2.5±0.020) specifications, 54SiCrV6 high-quality alloy spring steel as the base material of the piston ring integral special-shaped oil control ring wire, the processing method is as follows:
[0052] (1) Steel wire selection: choose a round steel wire with a diameter of φ4.2 mm and a material of 54SiCrV6 high-quality alloy spring steel.
[0053] (2) Rolling process: The raw material wire rod is linearly routed through two narrow strip rolling mills and three four-roller drawing die forming wire rod rolling equipment, drawn by a wire drawing machine, and continuously rolled on the upper, lower, left, and right sides of the wire rod at the same time Made into rectangular wire;
[0054] (3) Annealing process: After rolling, the wire rod is annealed through a special annealing long furnace, the annealing temperature is 930 ° C ~ 680 ° C, after annealing, rolling and annealing are performed, and this is repeated twice to obtain a shaped wi...
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Abstract
The invention relates to a manufacturing method of a steel integral heterotype oil control ring wire rod. The method includes: (1) selecting a round steel wire raw material; (2) rolling, namely, rolling a steel wire rod into a rectangular cross-section shape; (3) annealing, namely, subjecting the rolled wire rod to annealing, rolling and annealing again; (4) rolling a heterotype wire rod, namely, subjecting the wire rod to steps of pre-moulding, primary-moulding and refined moulding, and rolling to obtain a needed heterotype cross-section shape; (5) annealing, namely, subjecting the pre-moulded and primarily-moulded heterotype wire rod to annealing and rolling respectively; (6) quenching and tempering, namely, subjecting the heterotype wire rod after refined moulding to quenching and tempering treatment; and (7) performing laser drilling, namely, subjecting the wire rod after quenching tempering and moulding to oil return hole laser cutting so as to obtain the steel integral heterotype oil control ring wire rod. The method has characteristics of high machining precision, low cost, high yield of finished products, good product shape, high dimension precision and good quality, and can be used for manufacturing oil control rings of piston rings of internal combustion engines, thus meeting the technical requirements of the piston rings of the internal combustion engines.
Description
technical field [0001] The invention relates to a manufacturing method for forming a steel integral special-shaped oil control ring wire. The steel integral special-shaped oil control ring wire is suitable for manufacturing internal combustion engine piston ring oil control rings and belongs to the technical field of internal combustion engine piston rings. Background technique [0002] The wire used for the steel overall special-shaped oil control ring of the internal combustion engine piston ring has a complex cross-sectional shape and requires high dimensional accuracy. At present, only a few foreign manufacturers can produce such products, and the price is expensive. Although domestic manufacturers have trial-produced such products, they are still Due to various technical difficulties, not only the shape accuracy and dimensional accuracy cannot meet the requirements, but also the inherent quality and performance are unstable, making it difficult to meet the production nee...
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