Drying method for grinding steel ball grinding wheel
A technology of grinding steel ball grinding wheel and drying method, which is applied in the direction of drying gas arrangement, drying, drying machine, etc., can solve the problems affecting the progress of kiln installation, labor productivity, and high energy, so as to improve the yield and save production costs , the effect of improving production efficiency
Active Publication Date: 2015-01-28
江苏邦富莱苏蒙新材料有限公司
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Problems solved by technology
However, there will be cracks along the thickness direction on the side where the grinding wheel is in contact with the backing plate, and the reject rate is about 2%; and the cracks are very small, and it takes a lot of energy to check when installing the kiln, which affects the progress of kiln installation and labor productivity.
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[0008] Put 100 pieces of formed 1-800*100*360-A / GC steel ball and grinding wheel wet blanks on the special blank drying car and push them into the drying furnace for drying, and the gas car kiln is cooled through the pipeline. The generated hot air is sent into the drying furnace, and the air intake is controlled by the valve on the pipeline, thereby controlling the temperature rise, fall and heat preservation in the drying furnace. The whole process is carried out according to the following drying process parameters.
[0009]
[0010] The dried steel ball and grinding wheel blank has no cracks and no waste products, no need to use other heat sources, and has good economic benefits.
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The invention discloses a drying method for grinding steel ball grinding wheel, the method is realized in a conventional drying furnace, the drying process parameter is as follows: keeping the room temperature for 48h; heating to 30 degrees centigrade in the speed of 2-5 degrees centigrade for each hour, keeping the temperature for 24h; heating to 50 degrees centigrade in the speed of 1-2 degrees centigrade for each hour, keeping the temperature for 24h; heating to 80 degrees centigrade in the speed of 2-3 degrees centigrade for each hour, keeping the temperature for 48h; cooling to 60 degrees centigrade in the speed of -3 to -4 degrees centigrade for each hour, cooling to 40 degrees centigrade in the speed of -4 to -5 degrees centigrade for each hour, naturally cooling to room temperature. The hot source is transmitted to the drying furnace through the hot air generated in the fuel vehicle type kiln cooling process via pipeline and the air inflow is controlled by the valve. The drying method for grinding steel ball grinding wheel effectively controls the heating and cooling speed, avoids the crack between the grinding wheel and the mat plate contact surface along the thickness direction caused by the fast drying speed of the wet blank piece for drying the surface of the blank body. The yield is raised to more than 99.99%, the production efficiency is raised. And the surplus heat can be used in favour of raising the economic benefit.
Description
technical field [0001] The invention relates to a drying method for grinding steel balls and grinding wheels with a vitrified bond, which is mainly used in making grinding wheels for grinding spherical steel balls. Background technique [0002] Steel ball grinding wheel is a special grinding wheel for grinding spherical steel balls with a diameter below 76.20mm. It has the characteristics of large size, fine particle size, high hardness, and high density. It is widely used in machinery and bearing industries. Generally speaking, the outer diameter of the steel ball grinding wheel is 800mm, and some are 900mm and 720mm; its thickness is 100mm, so it is a large-sized grinding wheel. At the same time, in order to ensure the high durability of the grinding wheel, the amount of bond used is very large, generally the sand ratio is 1:1; in order to ensure the smoothness of the grinding steel balls, the particle size of the abrasive is F180 and finer, so the grinding wheel blank ...
Claims
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IPC IPC(8): F26B21/00F26B21/06
Inventor 严光华乔卫东王训扬孙韵孙桂林王梅
Owner 江苏邦富莱苏蒙新材料有限公司