四个人同房交换着做刺激_欧美亚洲另类制服卡通动漫_免费无码真人祼交视频网站_日本熟妇中文字幕一级_2023国产精品视频网站_最新精品国偷自产在线观看网站_不卡视频在线免费_欧美高清一区二区三_中文字幕在线看成电影_国产日韩欧美三级片

    Interpretation of belt buckle manufacturing process. The harmful structure of high-strength belt buckle is not realized by a special folding and stamping system. Special imported unknown steel material is used. The strength, elasticity and toughness of the belt buckle are tested.

Let's take a look

    1、 Electroplating. Electroplating is one of the five categories. Such as buckle products are essential important components.

    1. From the characteristics of electroplating, it can be divided into understanding electricity and controlling electricity. Low division LONGNING machine city Tielian rolling power is used for products with low appearance requirements for five button products. It electroplates five complete products, its surface will not be very bright. There will be flower marks.

    Of course, the plating or plating cost is also low. Corns. Push nail, five claw button, the bottom of the button three general for the German electricity. Power control is used in products with higher requirements for appearance of five button products. Such as he Quan Da Zu Mian, Xiao Wu Quan pin buckle, Wu Quan chain, all in one for the control of electricity.

    2. From the aspect of ring depth, it can be divided into: Limited electrical appliances without electroplating. Electroplating is to change the color into thin by chemical treatment. Attached to the surface of the product. If "some" is added in the electroplating process. It will lead to the failure to comply with the national environmental protection standards for organic electric inlay: for example, in the electroplating process + there is no "to be added". That is, electroplating without chopsticks. Of course, no chopsticks electroplating of Wuquan products also requires raw materials. If the raw material itself contains "Lue", it can't be used for electroplating without chopsticks.

    3. The commonly used electroplating colors are: green bronze, black ancient steel, red bronze, fanlan, Yafan, heifan, qianguoli, keguochopsticks, etc.

    2、 Spray paint. Spray oil in addition to the hole with any food color. And the difference in brightness is caused by light. Semi gloss oil. Yayou. Injection of open oil is commonly known as spray oil. It is mainly for acid proof treatment or surface protection. Smearing refers to checking the surface projection after oil injection.

    3、 Make sure to use the matching die to button. The production of thick button is made to measure the mold, so when you make buttons, you should also use the custom-made button mold. It is not recommended to use the button mold of other manufacturers, because the buttons produced by many manufacturers may be similar in appearance. But the result is different. The buttons produced by different manufacturers are different: when making button products. No other buttons.