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Shijiazhuang jinhengtai Grinding Wheel Co., Ltd

Telephone: 0311-83095198

Mobile phone: 18632169562

Mail box: 1356296910@qq.com

Website: en.jhtwheels.com

Address: No. 2, Area F, No. 8, Qingyuan Street, Shijiazhuang Economic and Technological Development Zone


Knowledge of saw blade dressing

2021-03-18 10:18:16
a

In the process of saw blade use, grinding is an essential process. However, in the process of grinding, many practitioners do not know how to repair the grinding, or by experience or by random grinding, which results in the manufacturer of saw blade using to reflect that the saw blade is not durable after grinding, and generally, it will reflect the bad grinding wheel. Because the equipment and practitioners are unchanged, it is considered that only the quality of grinding wheel is changed, and the grinding wheel is the only one to change Generally, the manufacturer does not know the customer's use methods and requirements, and generally, it will replace the grinding wheel for free, which will cause the user the bad influence of unstable grinding wheel quality. For customers, there is no way to improve their own grinding quality. Only do articles on price. You lower me and lower prices, killing each other, which makes everyone's life difficult (I heard that the grinding price of a saw blade is 0.8 yuan).

In the process of saw blade dressing, the following aspects should be paid attention to:

1. the removal of the saw blade: during the use of saw blade, some glue in the board will adhere to the saw blade. Before grinding, these adherents shall be removed. Generally, ultrasonic cleaning is recommended, and it is not recommended to remove the adhesive by hand electric drill and wire brush.

2. stress and leveling of saw blade: during the use of saw blade, the pre added stress on the saw blade matrix will be lost; in addition, during friction with wood, the base plate will also deform, which is also the aspect to be paid attention to in the grinding of saw blade.

3. angle of saw blade: generally, the saw blade manufacturers have different angles and customers for different application fields. In the process of blade repair and grinding, do not change the original angle of saw blade easily.

4. grinding amount of saw blade: during the use of saw blade, the blade wear is divided into three stages: 1. initial wear stage, 2. normal wear stage, 3. sharp wear stage, it is necessary to repair and grind before sharp wear stage of saw blade. This requires more communication and more economic accounting for users.

5. grinding: the purpose is to let the saw blade re expose the new edge, with the same sharpness and durability as the new saw blade.

The following figure shows a enlarged picture of the rear corner and side of the blade to be repaired:

200 times larger picture of rear cutter surface after wear

10 times larger picture of rear cutter surface after wear

Wear rear side knife face enlarged 200 times picture

Wear back side knife face enlarged 100 times picture

The wear of the saw blade to be repaired is relatively large in the above figure. It needs to be polished for the front and rear corners. About 0.2-0.3 is removed from the front corner and 0.2-0.3 for the rear corner. The worn part can be cut off completely to make the saw blade sharp as before. If the grinding quantity is less than the above value, even if the grinding is repaired, it can not achieve the good performance of the saw blade.

5. quality of grinding edge:

In the process of grinding repair, the general low-end customers buy a piece of grinding wheel, and they scratch it randomly, which is faster than that of non repair. Little attention is paid to the quality of the blade. In recent years, in the manufacturers of saw blade, the quality of the blade is more and more concerned. The focus is the micro collapse of the blade. Generally, it is observed by enlarging 30-200 times. This is very well understood. The blade is incomplete, and there is no one Good sharpness; if the broken metal accounts for 10% of the worn metal, the blade durability will be reduced by 10%.

The above figure shows the inspection standard of 180 times the magnification of the side knife surface of a saw blade manufacturer:

For the auxiliary cutting edge, the cutting edge and the back cutting edge, there is no obvious gap and breakage.

The requirements for grinding wheel are high when the above-mentioned edge without broken edge is met. The grinding wheel is required to be sharp, the equipment spindle is free of gap, the grinding wheel size should be appropriate and the grinding quantity should be appropriate.

Our company's high-quality products can meet the above requirements.

The new saw blade on the top has collapsed during production (grinding by the front and rear angle is even with the powerful machine, and the wheel selection is not suitable). The intersection line between the side and the front and rear corners has no edge collapse.

There is a broken edge at the intersection of the rear blade surface and the side blade surface of the upper saw blade. The tip of the knife fell.

6. diameter jump of saw blade after grinding:

The radial precision of saw blade after grinding is the same as that of new saw blade. Generally, the range of diameter jump of saw blade is within 0.03. This requires grinding wheel consumption, equipment accuracy and positioning spindle. Hebei TOS Machinery Co., Ltd. has small accessories for measuring the end diameter jump of saw blade.

If the saw blade repairer pays attention to these aspects in the aspect of blade grinding, it will grind a qualified saw blade.

Above is original document, if need reprint please note, deficiency please correct!



Experimental date: December 1st, 2012



Date of data rearrangement: March 18th, 2021



Finishing person: dongyinglei, Shijiazhuang jinhengtai Grinding Wheel Co., Ltd


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