Sealing Fatigue Testing Machine Accessories Welding Mechanical Processing

1. Adapt to complex irregular structures and shorten manufacturing cycles.
The accessories of fatigue testing machines are mostly non-standard parts with irregular shapes and multiple spatial pipelines/installation supports. Using steel plates, profiles, and forgings for welding, no need to open molds, and faster delivery for small batch customization, suitable for non-standard research and development of testing machines and prototype trial production.

2. Flexible material selection and zoning selection.
High strength alloy steel can be selected in critical stress areas, while ordinary carbon steel can be welded in non stress areas for local strengthening, balancing strength and cost.

3. Self weight is controllable and stiffness is adjustable.
The welded panel structure can reasonably arrange reinforcement bars, reduce self weight while ensuring fatigue stiffness, decrease the inertia of the testing machine, reduce additional vibration during fatigue testing, and improve the stability of test data.

4. Facilitate the formation of internal flow channels and cavity structures.
The oil circuit support and oil chamber shell of the hydraulic type seal fatigue test piece are easier to weld to produce interlayers and oil passages, significantly reducing material removal compared to overall machining.

1. Ensure dimensional tolerances and assembly accuracy.
Welding can cause deformation. After welding, aging treatment and precision machining (milling, boring, grinding) are used to correct welding deformation, ensure installation reference, hole spacing, flatness, coaxiality, ensure the alignment between the fixture and the sealing specimen, avoid additional bending moments caused by eccentricity, and prevent distortion of test results.

2. The surface quality is controllable, reducing stress concentration.
Machining can perform precision machining on mating surfaces and sample clamping surfaces, remove welding spatter and weld scars, and reduce surface defects. Fatigue testing is most afraid of stress concentration, and a smooth machined surface can prevent premature fatigue fracture of the component itself.

3. Convenient to reserve installation interfaces.
Precision boring, threaded holes, and positioning pin holes are processed and formed in one go, compatible with sensors, displacement sensors, hydraulic joints, and sample fixtures for quick disassembly and assembly, facilitating seal replacement and improving testing efficiency.

1. Suitable for non-standard, multi variety, and small batch sealing fatigue testing machine components;

2. High degree of freedom in structural design, capable of reinforcing ribs, weight reduction slots, and integrated oil circuits;

3. Stress relief after welding+precision machining, good resistance to alternating fatigue performance, suitable for long-term reciprocating fatigue testing;

4. High material utilization rate, small machining allowance, and lower cost;

5. Less internal defects, better toughness, less prone to porosity and looseness, suitable for alternating load conditions;

6. Convenient maintenance and renovation: Local damaged parts can be cut and replaced, re welded and machined without the need for overall replacement.