KEY CUT WHEEL
One by one tooth design of side milling cutter is cutting lighter than staggered teeth, This cutter has teeth along its sides, so the key machine can widen cuts with a side to side cutting motion.
Material: Solid carbide, the hardness reaches HRA92.5 or above, quite high hardness. The cutting edge is sharp and no longer need to change the cutter when cut the iron key, greatly save your precious time.
Production process: After 9 grinding processes, CNC precision grinding process, the cutting edge is extremely sharp.In particular, the side edge is sharp, and the depth of the side edge ensures the sharpness of the processing on the side of the Mortice key.
In view of the characteristics of carbide brittleness, KEYCUT invented a unique grinding process, strengthen the design of the cutting edge and improve the rigidity of the tip of cutter. It`s very good to resolve the problem of broken teeth.
Key Cut Wheel,Single Angle Milling Wenxing Cutter,Hss Single Angle Milling Cutter,Key Cutting Blade For Xhorse ZHANGJIAGANG KEYCUT CO.,LTD , https://www.keycutblade.com
(1) Preparation of a kind of frog pond and hatching pond The breeding frog pond and hatching pond should be built in a dark, quiet and well-watered area, with an area of ​​2 - 3 square meters. The pool should be thoroughly disinfected and cleaned and put into clean water. The water depth should be kept at about 20 cm. It is best to put some stones and fresh water grass.
(2) Breeding and spawning Stone frogs usually begin mating and spawning in April at temperatures above 20 degrees Celsius. The proportion of male and female frogs is 1:1 and the density is 15 - 20 animals per square meter. The frogs were generally held at 21 o'clock in the night and the female frogs spawned at 4 - 7 o'clock in the morning. Eggs are usually attached to water grass, rocks, and pool walls. They cannot be agitated within 1 hour after spawning to avoid damage and reduce hatching rate.
(3) Artificial incubation Every morning, observe and inspect the frog pond. If there are frog eggs, remove them gently after 8 a.m. and place them on the hatching tray in the hatching pond. During the incubation process, there must be a small amount of clear water flowing to ensure a clean water temperature of 15 - 30 degrees Celsius; a pH of 6 - 8 , a pool of 1 (500 - 1000 eggs). - After half an hour of egg laying, the ovule dark spots of the fertilized eggs became larger, the embryos became strips on the 7th day, and the 9th day larvae basically formed. After 15 days, the worms broke and the hatching rate reached over 85%.
(4) The growth of a quail is generally divided into four stages. In the early stage (1 - 10 days of age), the first 3 days after the rupture of the membrane, the momentum in the ovum increased gradually and began to feed. The outer layer of eggs and unsperted eggs were the main foods.
In the pre-growth stage (10 - 20 days of age), 10 days after the birth of Oyster, the food intake increases, but the digestive function is weak, and high-protein juice feeds such as egg yolk, soybean milk, etc. should be put into use. Feeding once a day at regular intervals, generally feeding 1 egg yolk with 1500 cercariae and gradually increasing thereafter.
During the mid-growth period (20 - 55 days), as the digestive function of the cockroach continues to increase, in order to promote the development of the digestive organs as soon as possible, and to adapt to the biological characteristics of the herbivorous nature of the amphibians during the flood season, it should be gradually reduced after 20 days of age. Stop the high-protein juice feed and gradually convert cooked botanical and algal feeds, such as stems and leaves of potatoes, fruit leaves of melons, rice, and fresh aquatic plants, etc., and remove the feed residue from the pool every day to ensure pool water supply. Not contaminated.
Late growth (55 - 75 days of age), also known as metamorphosis. After entering the metamorphosis stage after 55 days of age, the hind limbs, forelimbs, and tails were grown. This period is particularly careful and thoughtful in management. Must be grading, fresh water, water and land in half, landing is convenient; light dim, quiet environment, in order to create suitable ecological environment for earthworm metamorphosis.
(5) Young frogs with newly metamorphosed larvae have small body size and weak resistance. To strengthen management, active larvae such as fly maggots, small yellow mealworms and small quail should be used. Feeding is done every evening and the amount of feed depends on the conditions of feeding. As the amount of feeding of frogs increases, the amount of feeding is gradually increased, leaving a slight surplus. The feeding station should be cleaned every morning and often sterilized to prevent the remaining food from deteriorating and polluting the pool. At a later time, depending on the size of the frog, grading and rearing, the density is generally 100-300/m2. The frog pool is covered with yarn cover to prevent escape and rat damage.
Stone frog breeding technology
Stone frogs are protected animals by the state and they are delicacies on the table of the people. The artificial breeding of stone frogs is of great significance in protecting the ecological environment and has high economic benefits. Artificial breeding is the key to successful breeding of stone frogs. The key technologies are now described below.