How to open the teeth of 304 stainless steel pipe to make the effect better?

[guidebook] : 304 stainless steel tube can open the teeth, open teeth tools available manual and automatic open teeth apparatus, due to the stainless steel...

304 stainless steel tube can open the teeth, open teeth tools available manual and automatic open teeth apparatus, due to the stainless steel material is relatively sticky, open teeth can be added to the stainless steel open teeth oil, to assist in the completion of the open teeth, if the workload is not too large, it is best to choose the manual method of open teeth. 304 stainless steel tube how to open the teeth in order to make the effect better?

304 Stainless Steel Pipe

1. Use a reasonable hole size. Tapping stainless steel threads, "expansion" phenomenon is more serious, the tap is easy to "bite" in the hole, so the threaded hole should be appropriately increased. Generally speaking, the pitch is less than 1mm thread hole diameter is equal to the nominal diameter minus pitch; pitch greater than 1mm, thread hole diameter is equal to the nominal diameter minus double pitch. However, if the bottom hole is too large, it can cause tooth decay and roughness, thus affecting the integrity of the thread. In short, the bottom hole diameter does not match the tap, and as a result, the tap breaks easily.

2. Extrusion taps can be used to tap 304 stainless steel pipe. Extrusion tapping is the application of plastic molding, in the bottom hole with a tap extrusion to make the cut material bulge and form threads. Because it does not produce chips, there is no chip removal groove, so it is also called non-groove (chip) tap. This tap will not damage the thread or tap due to problems such as chip clogging. Extrusion tapping is suitable for stainless steel pipes and materials with good plasticity.

3. Matching stainless steel special cutting fluid. Reasonable design and selection of stainless steel tapping oil can be an effective way to reduce the friction of 304 stainless steel tube and tap, reduce wear, lubrication and anti-wear extreme pressure effect, improve heat dissipation technical conditions, improve the durability of the working tool and cutting productivity, to ensure that the surface of the processed material to carry out the quality and reduce the cost of processing time of the enterprise products.

4. Adjust the mechanical speed, synchronized feeding. Stainless steel tapping is difficult to cut materials, processing production process is more likely to lead to the production of hardened layer. If in the processing of threaded bottom hole, speed requirements are too high, it is easy to develop and cause the phenomenon of hardening of the enterprise processing, and further improve the processing will be more likely to break the tap; reduce the calculation of the cutting speed and reduce the amount of feed, so that the tap of the advancement of the management can be lowered, and its production of the thread precision is therefore greatly reduced, will continue to increase the roughness of the surface of the thread, the thread aperture and the accuracy of the thread are no way to achieve control, burrs and other problems. Control is not realized, and problems such as burrs begin to appear. The rotational speed is related to the service life and production cost, so the calculation of mechanical speed is very important.

5. Choosing the right tap and reasonable cutting parameters is the key to tapping quality. Tapping material, should be cobalt or super-hard high-speed steel. For straight groove tap, you can tap the front end of the tap to change the grinding into a spiral; tap front angle is generally γp = 15 ° ~ 20 °, back angle of 8 ° ~ 12 °.

304 stainless steel pipe open teeth to use a reasonable size of the bottom hole, adjust the mechanical speed, synchronous feeding tap, select the appropriate tap and reasonable cutting dosage with special cutting fluid for open teeth, in order to make the thread effect better.

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