Dalian selects a valve leak testing machine to ensure accuracy: from micro leakage to sealing, full dimensional control

Dalian selects a valve leak testing machine to ensure accuracy: from micro leakage to sealing, full dimensional control

As the "switch" of the engine's intake and exhaust system, the sealing accuracy of the valve directly determines the engine's power output and fuel efficiency. Even micrometer sized clearances may cause problems such as gas leakage and power reduction. In the selection of valve detection equipment, "precision" is the core criterion - high-quality Dalian valve leak testing machines have full dimensional precision control capabilities, achieving closed-loop control from micro leak detection to seal verification, becoming a key barrier to engine quality.

The core of precision lies in capturing micro leakage signals. The valve sealing surface is mostly a conical structure with narrow sealing lines and is easily affected by machining accuracy. Traditional detection methods are difficult to identify small leaks. The professional valve leak testing machine adopts differential pressure detection technology, which precisely adheres to the valve seat through customized conical sealing fixtures. After filling the detection chamber with clean air at a set pressure, high-precision differential pressure sensors are used to capture pressure changes. Its detection accuracy can reach 0.01Pa, and it can accurately identify micro leaks at the level of 0.001ml per minute, which is equivalent to capturing gaps with a hair diameter of 1/50 in real time, eliminating "hidden dangers" from the source.

Full dimensional control is more reflected in the adaptation accuracy of different valve characteristics. The cone angle and diameter of passenger and commercial vehicle valves differ significantly, and the sealing requirements for intake and exhaust valves are also different. The Dalian leak testing machine is equipped with multiple sets of detection parameter templates, which can automatically adjust the sealing pressure, detection time, and judgment threshold for valves of different specifications from φ 8 to φ 50mm; Equipped with quickly replaceable fixtures, it can adapt and switch between different cone angle sealing surfaces such as 45 ° and 60 ° within 30 seconds, avoiding over detection and damage to components, as well as preventing hidden dangers from insufficient detection, achieving precise coverage of all specifications of valves.

Accurate detection requires precise data tracing. The high-quality leak testing machine is equipped with an intelligent control system, which records real-time data such as pressure curves and leakage values for each test. It automatically generates a test report with a unique code, which is associated with valve batch information and uploaded to the MES system. After the introduction of this equipment by a certain engine factory, the valve sealing failure rate decreased from 0.8% to 0.1%. Through tracing and testing data, small deviations in three processing links were accurately identified, promoting production process optimization. In addition, the equipment also has an automatic calibration function, which automatically performs accuracy verification after every 200 tests to ensure the stability of long-term testing.

From precise identification of micro leakage signals, to adaptive detection of multi specification valves, and to precise traceability of detection data, valve leak testing machines take "precision" as their core competitiveness, achieving full dimensional coverage from detection to control. In the increasingly stringent requirements for engine quality, choosing the right Dalian valve leak testing machine is to grasp the power of the engine.