Valve plates are core opening-closing and sealing components of air compressors, hydraulic valves, refrigeration compressors and precision pneumatic elements. Mostly made of stainless steel and hard alloy materials, they feature thin thickness, high precision and excellent wear resistance. The flatness, parallelism and end-face finish of valve plates directly determine the air tightness, pressure relief accuracy and overall operational stability of valves. Traditional single-side lapping and ordinary polishing processes suffer from uneven stress distribution and large single-side grinding deviations. Processed valve plates are prone to warping deformation, inconsistent thickness and rough end-face textures, which easily cause air leakage, pressure relief jamming and excessive wear during operation, failing to meet the assembly standards of precision fluid control equipment. The
Valve Plate Double-Side Lapping Machine has become the standard core equipment for precision finishing of valve plates.
Specially optimized for the processing difficulties of thin valve plates such as easy deformation and high precision requirements, the machine adopts a double-sided synchronous lapping process with upper and lower grinding discs. Both the front and back end faces of workpieces are ground evenly and simultaneously, with bidirectional forces balancing each other, fundamentally solving the industrial pain points of stress accumulation and warping deformation of thin parts caused by single-side processing. It can efficiently remove heat-treated oxide layers, stamping tool marks and microscopic unevenness on the surface of valve plates, accurately correct end-face flatness and overall thickness tolerance, and achieve uniform finishing effects on both sides.
Equipped with a high-rigidity shock-absorbing body and an intelligent closed-loop pressure regulation system, the machine operates without disc vibration and maintains long-term stable benchmark accuracy. It adaptively matches the lapping speed and feed rate according to valve plates of different materials and thicknesses. Adopting a micro progressive material removal process, it avoids over-lapping, edge chipping and dimensional out-of-tolerance, maximally retains the toughness and structural strength of the valve plate substrate, and ensures zero processing damage to workpieces.
Valve plates processed by the machine feature high double-sided flatness consistency, smooth end faces and zero residual stress. They fit tightly with excellent sealing performance after assembly, effectively reducing the air leakage failure rate and extending the service life of valves. Compatible with precision valve plates of various thickness specifications, the machine supports both sample trial production and large-scale standardized mass production with outstanding processing yield and stability. It is widely applied in pneumatic, hydraulic, refrigeration and precision machinery manufacturing industries, providing strong technical support for the high-quality production of precision valve components.
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