Production Introduction
The titanium pipe joint is a titanium pipe fitting part mainly used on large biopharmaceutical equipment or fluid mechanical processing equipment. The titanium pipe joint mainly serves as a connecting pipe for a special interface to connect two titanium equipment parts. The use of titanium materials for titanium pipe joint is for its good corrosion resistance.
The degree of the titanium pipe joint can be produced into 30°, 45°, 90°, 120°, 180°, or other degrees per the customer's requirements.
The nickel-titanium alloy is a kind of shape memory alloy, which can automatically restore its plastic deformation to its original shape at a certain temperature.
Its expansion rate is more than 20%, its fatigue life reaches the 7th power of 1*10, its damping characteristic is 10 times higher than that of ordinary springs, and its corrosion resistance is better than the best medical stainless steel at present.
Therefore, it can meet the application needs of various projects and medicine. It is a very excellent functional material.
In addition to its unique shape and memory function, memory alloy also has the excellent characteristics of wear resistance, corrosion resistance, high damping, and hyperelasticity.
Performance and Characteristics
Shape memory is that when the parent phase of a certain shape is cooled from above Af temperature to below MF temperature to form martensite, the martensite is deformed at the temperature below MF, heated to below Af temperature, and the material will automatically recover its shape in the parent phase with reverse transformation. In fact, the shape memory effect is a thermally induced phase transformation process in NiTi alloys.
Superelasticity the so-called superelasticity refers to the phenomenon that a specimen produces a strain far greater than its elastic limit strain under the action of an external force, and the strain can be recovered automatically during unloading. That is, in the parent phase state, due to the effect of external stress, stress-induced martensitic transformation occurs, so the alloy shows a mechanical behavior different from that of ordinary materials. Its elastic limit is much greater than that of ordinary materials, and it no longer complies with Hooke's law.
Compared with shape memory properties, hyperelasticity has no thermal participation. In a word, hyperelasticity means that the stress does not increase with the increase of strain within a certain deformation range. Hyperelasticity can be divided into linear hyperelasticity and nonlinear hyperelasticity.
The relationship between stress and strain in the stress-strain curve of the former is nearly linear. Nonlinear hyperelasticity is the result of stress-induced martensitic transformation and its inverse transformation during loading and unloading in a certain temperature range above AF.
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