Glass hot bending forming process and 3D glass

Abstract

The invention discloses a glass hot-bending forming process which comprises the following steps: performing primary hot-bending forming on a blank to obtain a semi-finished product with the height ofa primary bending part of the semi-finished product being H1; and the semi-finished product subjected to primary hot bending forming is subjected to secondary hot bending forming to obtain a finishedproduct, the inner radius of the finished product is smaller than that of the corresponding edge of the semi-finished product, the height of a secondary bent part of the finished product is H2, and the height of the secondary bent part and the height of the primary bent part of the corresponding edge of the semi-finished product meet the condition that H1 is larger than 1 / 2H2 and smaller than or equal to H2. By applying the glass hot bending forming process provided by the invention, the material transfer trend of a product bending area is reduced, and the relative deformation of a product subjected to hot bending for two times is reduced, so that the processing force required by secondary hot bending is reduced, the defects of edge collapse and corner collapse of the product are improved,and the product with the bending inner radius R of less than 3mm is formed. The invention further discloses the 3D glass processed by the glass hot bending forming process, and the 3D glass also hasthe technical effects.

Description

technical field [0001] The invention relates to the technical field of glass product processing, and more specifically, relates to a glass hot-bending forming process and 3D glass. Background technique [0002] At present, the bending inner radius R of mobile phone 3D glass products in the market is more than 3mm, and the products with bending inner radius R=0.5mm are still in the blank stage. 3D glass products generally include two-side bending products and four-side bending products. [0003] Among them, the traditional hot-pressing process forms a double-sided bending product with a small inner radius R. When the inner radius is less than 3mm, the materials at the bend will squeeze each other to form wrinkles, which will cause the large surface of the product to be unable to be flattened, resulting in collapsed edges and distortion of light and shadow. The smaller the radius R, the more obvious the phenomenon. [0004] The traditional hot pressing process forms a four-s...

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Problems solved by technology

[0006] In view of this, the first object of the present invention is to provide a kind of glass hot bending forming process, which can effectively solve the problem that the products with bending inner radius R less than 3mm are difficult to form. The present invention The second purpose is to provide a 3D glass

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