Chip pi layer and passivation layer cross section position (chip passivation layer thickness)

• 1, Metal plating and spraying method
• 2, 254smo stainless steel welding preheating temperature and interlayer temperature should be maintained?
• 3, How to crack the arcade cassette chip of 2059454036

Metal plating and spraying method

1, the matrix material symbol: metal materials are represented by chemical element symbols, alloy materials are represented by chemical element symbols of their main components, non-metallic materials are represented by international common abbreviations, such as copper is represented by Cu, plastics are represented by PL. The symbols for the plating method and treatment method are shown in Table 1.

3, hello, do you want to ask what is the expression method of nickel plating? The expression method of nickel plating is EP·Ni. Electroplating nickel in electroplating is expressed by EP, nickel is a metal element, symbol Ni, metal element is a chemical symbol to express, electroplating nickel is separated by · in the middle, so electroplating nickel is expressed by EP·Ni.

4, spraying: The use of fusible powder electrostatic spraying to the surface of the parts, through high temperature remeltingThe method of producing a dense coating is also called powder spraying. Spray painting: The paint is evenly sprayed on the surface of the part through the nozzle, and the dense protective film can be obtained after the solvent is volatilized and cured.

254smo stainless steel welding preheating temperature and interlayer temperature should be maintained?

1, maintain the short arc, maintain the maximum interlayer temperature of 200℃. Long and thin bead welds are recommended to remove welding slag between welding layers. The thick wall section is beveled to form a 75 degree V groove. Preheating is generally not recommended.

2, pre-welding and post-heating is to reduce the cooling rate of the weld, to prevent the joint from forming hardened structure, resulting in cold cracks.

3, generally speaking, the ambient temperature below 5 degrees Celsius need to preheat welding. Ordinary mild steel according to the ambient temperature and thickness, the preheating temperature can be between 50-150, and the inter-layer temperature is generally controlled within 250 degrees Celsius. Austenitic stainless steel is generally not preheated, and the layer temperature is controlled within 150 ° C.

4, the temperature between the weld layers is controlled below 200-250. The interlayer temperature of the high nickel alloy is 60 degrees, and the austenitic stainless steel is generallyThe control is about 150 degrees, or even lower, which mainly depends on the mass fraction of the alloy steel. Interlayer temperature is another name for interchannel temperature.

How to crack the arcade's cassette chip 2059454036

1, rational use of resources and props: in the game, players can collect a variety of resources and props, such as weapons, equipment, etc. The proper use of these resources can improve the player's fighting ability and survival chances. Master combat skills: Combat is an important part of the game, and players need to learnHow to use different weapons and skills to win.

2, the steps of cracking the Zhongyitang game hall machine are as follows: The game is played with nine lines, each line as long as there are three of the same patterns connected together to win, according to the different patterns, the ratio is different.

3, a small number of players can not play. Look at what other people press next to the animal, try not to repeat with others, the pressure of small animals. It is recommended not to exceed 500 points. If you lose pressure more than five times, change the machine.

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