A metal structure test block for ultrasonic testing and its preparation process

Abstract

The invention provides a metal structure test block for ultrasonic testing. The metal structure test block comprises an inner sand core block, a transition composite layer and an outer metal layer which are sequentially cast. The surface of the inner sand core block is crossedly provided with a plurality of communicated channels. The inner diameter of the channel opening is larger than the widestinner diameter of the channel. The inner sand core block comprises sandstone, soft refractory clay and water glass. The transition composite layer comprises composite molten iron containing silicon carbide. The outer metal layer comprises composite molten iron without silicon carbide. Through the reasonable structure design and material matching, the test block for ultrasonic testing has stable structural quality. The metal structure test block has good internal compactness and retractable elasticity and low transverse wave and longitudinal wave dampening effects, can be used for an ultrasonictest on the diagonal welding joint and has high detection sensitivity.

Description

technical field

[0001] The invention relates to the technical field of metal test blocks, in particular to a metal structure test block for ultrasonic testing and a preparation process thereof. Background technique

[0002] my country's steel structure industry has developed rapidly in the past 10 years, and has become the world's largest steel structure country with the largest steel structure consumption, the strongest manufacturing and construction capabilities, the largest industrial scale, and the largest enterprise scale. The successful construction of major steel structure projects in various places shows that my country's steel structure comprehensive technology level has reached the international advanced level. However, there is still a big gap between my country's steel structure industry and developed countries in terms of informatization, automation, standardization, and scientific research and innovation. Whether it can make my country's steel structure indust...

Examples

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]...

technical field

[0001] The invention relates to the technical field of metal test blocks, in particular to a metal structure test block for ultrasonic testing and a preparation process thereof. Background technique

[0002] my country's steel structure industry has developed rapidly in the past 10 years, and has become the world's largest steel structure country with the largest steel structure consumption, the strongest manufacturing and construction capabilities, the largest industrial scale, and the largest enterprise scale. The successful construction of major steel structure projects in various places shows that my country's steel structure comprehensive technology level has reached the international advanced level. However, there is still a big gap between my country's steel structure industry and developed countries in terms of informatization, automation, standardization, and scientific research and innovation. Whether it can make my country's steel structure indust...

Examples

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]...