Condenser is a kind of equipment that can condense gaseous substances into liquid state, which is widely used in automobile air conditioner and household air conditioner, etc. It is composed of two parts: collector tube and fins. Controlling the leakage rate of aluminum alloy for condenser in line with high-frequency welded tubes to zero has been the goal of all parties, including aluminum strip suppliers, aluminum welded tube producers and condenser manufacturers. However, feedback about condenser manifold leakage continues to come back from the industry. We analyze the causes of condenser manifold leakage from the perspective of condenser manifold producers and propose solutions for your reference in anticipation of further reducing the condenser manifold leakage rate.
Condenser manifold weld leakage pattern.Statistics show that 99.8% of the leakage points of condenser manifolds are concentrated in the weld area, and there are three main manifestations of weld leakage: porosity leakage, micro-crack leakage and slag leakage.
Pore leakage refers to the leakage in the weld area when the test pressure has not yet reached the specified value.
Micro crack leakage. Observation of the microstructure of the condenser collector tube weld can be returned, the crack atmosphere through the two categories of cracks and local micro cracks.
Inclusion leakage refers to the presence of metal oxides or non-metal oxides, such as Al2O3, SiO2, etc., in the weld seam of the condenser manifold, which are not related to the aluminum alloy organization.
Condenser manifold weld leakage causes.
Longitudinal shearing of aluminum tube strips with irregular cut surfaces.
The guide ring for forming rolls is not designed for the characteristics of aluminum tube strips.
Improper control of welding process parameters.
Solutions to prevent condenser manifold weld leakage
Micro cracks in the weld through the tube wall
Micro crack in the middle of the weld
