Manufacturing method of high-outturn-percentage wood physical and mechanical test material
A technology of wood physical mechanics and production method, which is applied in the field of wood physical mechanics test material production with high yield rate, and can solve problems such as difficulty in obtaining test pieces, limitation of the quantity of sample wood collected, unfavorable wood performance testing or functional improvement research, etc. , to achieve the effect of protecting germplasm resources, convenient operation and high utilization rate
Active Publication Date: 2020-12-01
GUANGXI FORESTRY RES INST
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Problems solved by technology
However, some sample trees are related to the protection of germplasm resources. The number of sample trees collected is limited, and it is difficult to obtain test pieces, which is not conducive to wood performance testing or functional improvement research.
Method used
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Embodiment 1
[0044] Select 12 fast-growing plantation eucalyptus clones, 7 years old, with a diameter at breast height of more than 14 cm, an average diameter at breast height of about 18 cm, and a straight stem. Cut down the sample trees, cut 3 sections of logs from the root of the trunk along the trunk direction of 0-2.0m, 2.0-4.0m, and 4.0-6.0m for each sample tree, and the length of the timber is 2m. According to GB / T192098-2009 "General Rules for Wood Physical and Mechanical Test Methods", the most standard specimens are selected for sawing processing, that is, the specifications are: 20cm×20cm×20cm.
[0045] A method for manufacturing high-yield wood physical and mechanical test materials, mainly comprising the following steps:
[0046] Step (1), impurity removal and truncation: completely remove the bark and other sundries on the surface of the log, and cut the log horizontally into 1m long log segments;
[0047] Step (2), sawing along the first sawing road: select a section of log...
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Abstract
The invention discloses a manufacturing method of a high-outturn-rate wood physical and mechanical test material. The manufacturing method mainly comprises the following steps of (1) removing impurities and cutting off; (2) sawing along a first saw line to obtain two sections of semi-circular materials; (3) sawing along a second saw line to cut out a rough edge plate; (4) sawing along a third sawline to obtain fan-shaped log sections; (5) sawing along a fourth saw line to cut out a rough edge plate; (6) sawing along a fifth saw line to cut off a wedge-shaped part; (7) sawing along a sixth sawline to cut off a rough edge plate; (8) sawing along a seventh saw line to cut off a wedge-shaped part; (9) sawing along an eighth saw line to cut off a rough edge plate; (10), removing burrs; (11),drying; (12) planing; and (13) manufacturing a test piece. According to the manufacturing method, a plate is high in utilization rate and outturn percentage, waste of the plate is reduced, germplasm resources are protected, and meanwhile it is guaranteed that the number of samples meets the national standard requirement.
Description
technical field [0001] The invention belongs to the technical field of wood sawing, and relates to a method for preparing wood physical and mechanical test materials with high yield rate. Background technique [0002] In the process of wood performance testing or functional improvement, logs need to be sawn into boards, and after drying, the boards are processed into test pieces of various specifications according to national standards. Logs are usually sawed using the raw down-saw method or the symmetrical down-saw method. Wood physical and mechanical test specimens have strict requirements on wood texture, that is, the specimens are required to have standard cross section, radial section and chord section. When the boards sawed by the common sawing method are processed into physical and mechanical test pieces of various specifications, only a small part of the wood in the middle of a board meets the requirements, wasting most of the boards, and the yield rate is low, whic...
Claims
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Login to View More IPC IPC(8): B27M3/00G01N1/28
CPCB27M3/00G01N1/28
Inventor 卢翠香刘媛周维邓紫宇唐庆兰郭东强任世奇伍琪陈升侃陈健波李昌荣韦振道
Owner GUANGXI FORESTRY RES INST