北京塞车pk10计划视频

Consulting Hotline: 15169463938

Qingzhou Qiannuo Machinery Co., Ltd.

Contact: Manager Zhang

Fax: 0536-3579821

Phone: 151-6946-3938

Postcode: 262515

Address: Shandong Qingzhou Economic Development Zone


Prevents undercuts on spiral blades

Spiral blades are used to convey relatively viscous and compressible materials. Due to some external factors or our mistakes in use, products will have different degrees of defects. Of these, the parity often occurs. The following is to share some product bites. Prevention of edge flaws:
First, continuous undercut
1. Selecting a welding machine with good performance requires good current and voltage adjustment characteristics, strong anti-interference ability and environmental tolerance ability, suitable for continuous production operations. The parameters, stable performance and durability of each component in the welding machine operation box. The matching between the host and the operation box is better.
2. Regularly check and replace the contact tip
The wire guide groove must be as large as the diameter of the wire. At the same time, the slider screws must be tightened so that the inner surface of the slider wire guide groove is close to the outer surface of the blade wire to maintain its conductive performance. The slider should be checked regularly, and it must be replaced in time when the guide groove is found to be seriously worn.
Second, a single undercut
1. No regularity occurs occasionally. Excessive changes in the forming seam, small burrs or small gaps on the edge of the steel, and the wrong side of the molding may form a single-sided bite.
2. Welding wire joint:
Due to the change in diameter and smoothness of the welding wire joint, the wire feeding speed will change suddenly when the joint passes through the wire feeding wheel and the bend, which will cause the instantaneous change of welding voltage and melting speed, the sudden widening of the welding pool and Caused by insufficient molten metal replenishment.
3. Irregular welding:
Welding specifications will not change greatly during continuous production, so no undercuts will occur during normal production. However, under the influence of an external power source, the welding current and voltage may also change abruptly, and the sudden change results in the occurrence of undercuts.
4. Preventive measures:
① Strictly control the welding specifications of spiral blades. Pay attention to the changes in current and voltage during welding. If the changes are too large, look for the cause of the power supply and the power supply outside the system, so that the change of the specification is controlled within the allowable range.
② Due to the uncertainty caused by defects, it is not necessary to make large adjustments because of this. The strip edges can be treated as smooth as possible and the forming can be kept stable when the conditions allow.
③The problem of smooth processing of edges can be solved by using a milling machine instead of disc shearing. For the problem of forming stability, methods to improve the quality of adjustment can be adopted.
Spiral blades will cause undercuts due to changes in ambient temperature and equipment conditions. This problem will greatly reduce its bearing capacity, so we cannot allow this to happen. Manufacturers pay attention to quality during production. We use Pay attention to maintenance when you are done.
Editor: mxy