Bathroom Sink faucet is heavily used every day between brushing your teeth and washing your hands multiple times. Choose a tub faucet that is not only reliable and water efficient, but also fits your style and budget. We have the latest styles of sink faucets to choose from. Stainless steel bathroom faucets are spot-proof. In addition to resisting spots and fingerprints, the matte black bathroom sink faucet enhances durability.
Analysis of the Causes of Common Fractures of Stainless Steel Seamless Pipes by Rongweida Company
1 Analysis of the common fracture of stainless steel seamless pipe The common process of stainless steel seamless pipe production in China is: blanking_peeling_hot perforation-reaming-+solution treatment, folic acid washing, cold drawing (or cold rolling)_solution treatment A pickling _ whitening test. Reaming and cold drawing can be carried out multiple times, but each solution must be solution treated after cold deformation. A large amount of statistical data is displayed. The main processes for breaking during the processing of stainless steel tubes are hot perforation, reaming and cold drawing. However, there are fewer cases where the steel pipe breaks during the cold rolling process.
In addition, because the acid wash concentration is too high or the pickling time is too long. It can also cause surface cracks in the steel pipe or hydrogen-hard brittle lag cracks. 1.1 Billet quality The rolled or forged material of stainless steel seamless pipe is usually stripped after being cut. That is, the round steel surface is peeled off by 1.3 mm by a machining method to eliminate surface defects remaining in the rolling (or forging) process. When there are still defects on the surface of the blank, it is also repaired because the defects such as cracks on the surface of the blank are an important cause of cracks in the tube blank in the thermal perforation.
In addition. Since the shrinkage hole of the steel ingot is not completely removed, local chemical composition and unevenness of the structure are caused, which is also an enrichment area of ​​inclusions, which is an important cause of fracture of the steel pipe. The fracture morphology of the pipe end caused by the uncutting of the steel ingot shrinkage hole is shown in Fig. 1. If the content of inclusions in the blank is high, especially when there is a large brittle inclusion in the steel, the tube blank will also form a spiral crack during thermal perforation. Figure 2 shows the crack caused by inclusions after pickling of the tube blank. 1.2 Billet heating temperature Generally speaking, during the perforation process, the temperature rise of 40 to 60 °C is caused by the strong deformation of the billet and the friction with the tool. The temperature rise of multi-alloyed stainless steel can reach 100 ° C or even higher. When the heating temperature of the billet is too high, and then superimposed with the temperature rise of the deformation, the billet is locally overheated, so that a spiral fold is easily formed on the inner and outer surfaces of the capillary tube, and a deep crack is often accompanied at a serious fold. Its typical shape is shown in Figure 3.
The reason for the fracture during the processing of stainless steel seamless pipeFig.1 The pipe end fracture caused by the uncut L of the steel ingot L (06Crl9Nil0 steel, 130mmxl4mm, when reaming)Fig.2 The crack caused by inclusions after pickling of the blank 06Crl8NillTi steel, 120mmxIlmm, after hot perforation) Figure 3 Folded topography formed on the hot perforated capillary tube (06Crl9Nil0 steel, 130mmxl4mm. After hot perforation) If the heating temperature of the blank is higher, it will form over-burning. Partial grain boundary melting may occur in the capillary during the L process. There will be delamination inside, and in severe cases, corrugated protrusions and cracks will appear on the surface. Figure 4 shows the appearance of protrusions and cracks on the layered capillary. 1.3 Thermal perforation process due to the direct relationship between the quality of the capillary
Xinghua Rongweida Stainless Steel Pipe Fitting Co., Ltd.
Bathroom Faucet,Shower Fixtures,Black Bathroom Faucets,Single Hole Bathroom Faucet
JIANGMEN MEIAO KITCHEN AND BATH CO.,LTD , https://www.jmmeiaogroups.com