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How to avoid tearing or collapsing of the copper pipe wall during hot melt drilling when the wall of the air conditioning copper pipe is thin and prone to deformation, while ensuring the quality of the convex ring forming?

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The hot melt drilling process softens the metal at high temperatures and extrudes it into shape, rather than cutting to remove the material, so it will not cause tearing or collapse. In the HVAC refrigeration scheme, convex rings are formed synchronously during the processing of copper pipe components, and there are no copper chips or burrs. One processing meets the requirements of convex ring forming, no burrs, and no copper chips. The processing parameters need to be adjusted according to the wall thickness and diameter of the copper tube. It is recommended to provide specific specifications, and the technical team can assist in providing selection and parameter suggestions.

How to ensure the accuracy of the fit between the sealing gasket and the protruding platform after the battery pack frame beam is integrated with a hot melt drill to form the protruding platform? Can it meet the IP67 waterproof rating?

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In the new energy battery solution, a hot-melt drill is integrated into the frame beam wall to form a through-hole protrusion. The protrusion is integrated with the substrate, and the positional accuracy is better than the cumulative tolerance formed by the installation of multiple rivet nuts. The sealing gasket is placed on the convex platform, and the bolt is tightened to form a sealed connection. The solution meets the sealing requirements of the battery pack. The IP67 rating requires comprehensive verification based on gasket selection, tightening torque, and overall structural design. Huayi Tools can provide sample support in conjunction. Suggest contacting the technical team to provide targeted solutions based on specific sealing level requirements.

Is it necessary to add subsequent electrolytic polishing or passivation treatment to the hot-melt drilling process for medical device stainless steel thin-walled pipe fittings that require no burrs or oxide layers after processing?

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The hot melt drilling process does not produce chips, the hole wall is smooth without burrs, and there is no welding heat affected zone, so there will be no oxidation layer. In the medical device solution, stainless steel thin-walled pipe fittings can directly meet the surface quality requirements after processing, which can reduce or eliminate the subsequent deburring process. If the product has special requirements for cleanliness or corrosion resistance, passivation treatment can be evaluated based on specific standards. Suggest providing acceptance standards for workpiece material and surface quality, and the technical team can assist in confirming process compatibility.

The connection of rail transit vehicles has strict requirements for fatigue life. Compared with welded nuts, how reliable is the lining thread formed by hot melt drilling under alternating loads?

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The lining metal fibers formed by hot melt drilling extrusion are continuous and not broken, and a cold hard layer is formed on the thread surface. The tensile strength and torque are higher than those of traditional welded threads. In the rail transit scheme, the connection strength is verified through industry standard fatigue testing methods to meet the requirements for connecting body structural components. Welding nuts have a heat affected zone, which can easily become a source of fatigue cracks under alternating loads; Hot melt drills have no welding heat input, avoiding this problem. The specific testing standards can be determined according to project requirements, and Huayi Tools can provide samples and testing support in cooperation.

The wall thickness of construction machinery structural components is generally between 6-12mm. Can the existing CNC equipment spindle power and speed meet the requirements of hot melt drilling?

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The equipment requirements for hot melt drills are a power of 1.5-3.5kW and a speed of 1000-4000RPM, which can be met by most construction machinery companies' existing CNC machining centers. When the wall thickness increases, it is necessary to use a large-sized hot melt drill and adjust the speed and feed parameters appropriately. For every 1mm increase in wall thickness, the processing time increases by about 1 second. In the construction machinery scheme, structural components with a wall thickness of 4-8mm are processed based on the customer's existing CNC equipment. Suggest providing specific equipment models and workpiece specifications, and the technical team can assist in evaluating compatibility.