A metal structure test block for ultrasonic testing and its preparation process
A metal structure and ultrasonic testing technology, which is applied in the direction of material analysis, measuring devices, and instruments using sound waves/ultrasonic waves/infrasonic waves, can solve the shortage of high-skilled testing technical personnel, the lack of physical comparison materials for testing, and the weakness of testing technology links and other issues, to achieve internal compactness and good scalability and elasticity, to ensure stability and stress-sensing sensitivity, and to improve detection accuracy
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Embodiment 1
[0024] A metal structure test block for ultrasonic testing, including an inner sand core block, a transition composite layer, and an outer metal layer cast sequentially. The surface of the inner sand core block is criss-crossed with a number of interconnected channels, and the inner diameter of the channel opening is Larger than the inner diameter of the widest part, the inner sand core consists of the following raw materials: sandstone, soft refractory clay, water glass, the transition composite layer is composite molten iron containing silicon carbide, and the outer metal layer is composite molten iron without silicon carbide.
[0025] Wherein, the depth of the channel is 1-10mm, the pouring thickness of the outer metal layer is 5-20mm, and the longitudinal section of the channel is "U" shaped.
[0026] The inner sand core also includes rare earth phosphate, wherein the rare earth is selected from any one of lanthanum, cerium, and cerium. The mass percentage content of each r...
Embodiment 2
[0037] A metal structure test block for ultrasonic testing, including an inner sand core block, a transition composite layer, and an outer metal layer cast sequentially. The surface of the inner sand core block is criss-crossed with a number of interconnected channels, and the inner diameter of the channel opening is Larger than the inner diameter of the widest part, the inner sand core consists of the following raw materials: sandstone, soft refractory clay, water glass, the transition composite layer is composite molten iron containing silicon carbide, and the outer metal layer is composite molten iron without silicon carbide.
[0038] Wherein, the depth of the channel is 1-10mm, the pouring thickness of the outer metal layer is 5-20mm, and the longitudinal section of the channel is "U" shaped.
[0039]The inner sand core also includes rare earth phosphate, wherein the rare earth is selected from any one of lanthanum, cerium, and cerium. The mass percentage content of each ra...
Embodiment 3
[0050] A metal structure test block for ultrasonic testing, including an inner sand core block, a transition composite layer, and an outer metal layer cast sequentially. The surface of the inner sand core block is criss-crossed with a number of interconnected channels, and the inner diameter of the channel opening is Larger than the inner diameter of the widest part, the inner sand core consists of the following raw materials: sandstone, soft refractory clay, water glass, the transition composite layer is composite molten iron containing silicon carbide, and the outer metal layer is composite molten iron without silicon carbide.
[0051] Among them, the depth of the channel is 1-10mm, the thickness of the outer metal layer is 5-20mm, and the longitudinal section of the channel is gourd-shaped (the upper part is a semicircle, the lower part is a complete circle, and the inner diameter of the upper part is larger than that of the lower part. half the internal diameter).
[0052]...
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