is adopted by most countries.
2.The second is the crucible method, in which the molten lead is oxidized while being blown away by ajet of air.
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Product Description
name | lead powder |
size | 200 300 400 500 |
Structure | Scale petals and masses |
Quality Index | Oxidation degree, apparent density, water absorption, etc. |
The influence of the production process of lead powder on the quality of lead powder is as follows
Title goes here.
1.one is to use a lead powder machine similar to a ball mill. The lead is oxidized in the machine and ground at the same time, which
is adopted by most countries.
is adopted by most countries.
(1) The influence of the amount of shots. If the amount of shots is reduced, the rotation speed of the lead powder machine will increase, the friction between the shots will decrease, the lead powder particles will be larger, the apparent density will be higher, the temperature will be too low, and the degree of oxidation will also decrease. . The lead powder machine is not efficient. Otherwise, the situation is the opposite. Therefore, the amount of balls added should be strictly controlled.
(2) The influence of the temperature of the cylinder. If the temperature of the cylinder is too high and reaches the melting point of lead, the lead ball will melt into a mass, and lead powder cannot be made. If the temperature in the cylinder is too low, the oxidation effect is reduced. The temperature of the outer wall of the cylinder is generally controlled at 160~180℃, and adjusted by 10℃ up and down according to the season.
(3) The influence of the blower, the air can oxidize and regulate the temperature in the cylinder. Large quantity and high output,but the temperature of the cylinder is not easy to maintain. The volume is small, and the temperature of the cylinder is easy to rise. The humidity of the air also has a certain influence on the oxidation of lead powder. The humidity of the air blown in is high, and the oxidation degree of the lead powder is high due to the effect of water as a medium.
(4) The influence of climatic conditions, the production of lead powder has a strong seasonality, and the quality of lead powder fluctuates greatly with changes in climatic conditions. In order to maintain a stable quality of lead powder, it is necessary to control the temperature and
humidity of the airflow and the temperature of the working environment of the lead powder machine. Generally, the control air temperature is 15~25℃, and the relative humidity is 70%~80%. In winter, the temperature in the workplace cannot be lower than 15℃.
humidity of the airflow and the temperature of the working environment of the lead powder machine. Generally, the control air temperature is 15~25℃, and the relative humidity is 70%~80%. In winter, the temperature in the workplace cannot be lower than 15℃.
Company Profile
Tianjin longford Meatal Products.,Ltd is a manufacturer of steel pipe , Steel plate, copper tube, copper sheet, Stainless Steel tube, Stainless Steel Sheet, steel bar, aluminum tube, aluminum sheet, steel beam with well-equipped testing facilities and strong technical force. With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in mechanical manufacturing , metallurgical minerals , building materials, shipping, aircraft, automobile and other industries. Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
FAQ
1. who are we?
We are based in Tianjin, China, start from 2017,sell to Domestic Market(00.00%),North America(00.00%),Southeast Asia(00.00%),Africa(00.00%),South Asia(00.00%),Oceania(00.00%),Western Europe(00.00%),Mid East(00.00%). There are total about 51-100 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Steel,Stainless Steel,Alloy Steel,Nonferrous Metal,Metal Processing
4. why should you buy from us not from other suppliers?
Our company is located in the steel industry belt, close to Tianjin Port, many years of experience in steel industry sales, can represent customs declaration packaging and other services
5. what services can we provide?
Accepted Delivery Terms: FOB,CIF；
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,MoneyGram,Credit Card,PayPal,Western Union;
Language Spoken:English,Chinese
We are based in Tianjin, China, start from 2017,sell to Domestic Market(00.00%),North America(00.00%),Southeast Asia(00.00%),Africa(00.00%),South Asia(00.00%),Oceania(00.00%),Western Europe(00.00%),Mid East(00.00%). There are total about 51-100 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Steel,Stainless Steel,Alloy Steel,Nonferrous Metal,Metal Processing
4. why should you buy from us not from other suppliers?
Our company is located in the steel industry belt, close to Tianjin Port, many years of experience in steel industry sales, can represent customs declaration packaging and other services
5. what services can we provide?
Accepted Delivery Terms: FOB,CIF；
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,MoneyGram,Credit Card,PayPal,Western Union;
Language Spoken:English,Chinese
Product Categories : Nonferrous Metal > Lead Products
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