T/BYCA 001-2022 Appraisal of Yabao Raw Materials and Products

Scope

Main technical content: 1. Appearance requirements: There should be no through cracks, no insect damage, and no decayed materials on the surface. 2. Material requirements: The materials should come from the Taihang Mountains. For the current conditions of dead knots, holes, and cracks in the materials, artistic applications are allowed. 3. Stability requirements: The placement should be stable and safe. 4. Product shape and size: The identification of Yingbo raw materials and products should also meet the requirements of Table 1. The allowable deviation between the dimensions marked on the product drawings and the actual measured values should be ±5 mm. 5. Process and structure requirements: 1) The carving process should maintain the integrity and clarity of the graphics, with smooth transitions and distinct layers. Symmetrical parts should be symmetrical, and the base should be smooth and free from chipping, scratches, or unevenness. 2) The inlay process should maintain the integrity of the graphics, with a tight fit, strong adhesion, and smooth surfaces, free from over-cutting or scratches. 3) The line processing should be uniform, straight, symmetrical, and smooth, free from chipping, scratches, or unevenness. 4) The round corner processing should be symmetrical, smooth, and free from chipped or scratched corners. 5) The spacing between various Wangyi dividing lines should be uniform and straight, with a deviation in spacing no greater than 1 mm. The concave base should be smooth and clean. 6) The tenon-and-mortise joints should be tight and secure, with a maximum gap of ≤0.2 mm. There should be no looseness, broken tenons, or cracks. 7) The processing should be delicate and fine, with no obvious processing defects. All edges and corners that can be touched by people after assembly and that may cause human scratches should be beveled, rounded, or sanded before assembly.

Development Information

Related Standards