Come and learn about our raw material magnesium ingot
Today I want to talk to you about one of our raw materials:
magnesium ingots.
Magnesium ingots are one of the important raw materials
for the production of nodularizers.
The selection of high-quality magnesium ingots is
an important part of ensuring the quality of nodulizers.
Magnesium is a lighter metal among practical metals.
The specific gravity of magnesium is about
2/3 of that of aluminum and 1/4 of that of iron.
It has high strength and high rigidity.
We all use magnesium ingots of model 999,
which are purchased from...
Nodulizer plays a very important role in promoting ductile iron production
Nodulizer plays a very important role in promoting ductile iron production.
Therefore, casting also has important basic requirements for nodularizing agents!
1. Strong spheroidization ability
2. Abundant resources, low price, easy to melt
3. Strong adaptability to molten iron of
various components and temperatures
4. The kinetic conditions of the spheroidization reaction are good,
the reaction is relatively stable,
the reaction products are easy to be eliminated, the dosage is small,
the cooling is less,
and the spheroidization treatment process is...
What are the consequences of incorrect use of nodulizers?
Today we continue to talk about what will be the consequences
if the nodulizer is used incorrectly?
4. Graphite floating: In the thick-walled ductile iron parts with hypereutectic composition,
there is often a graphite-intensive area at the top of the pouring position,
that is, the phenomenon of "graphite floating".
This is because the density of graphite and molten iron is different,
and the hypereutectic molten iron is directly precipitated
The graphite is caused by the upward buoyancy.
5. Graphite ball dissimilation:
Graphite ball...
Attention, improper use of spheroidizer can lead to serious consequences!
This is the spheroidizing agent just produced by the masters.
The advantages of the nodulizer are undeniable,
but if used improperly,
it will not only fail to play the role of the nodulizer,
but also cause inevitable losses.
So what are the consequences if the nodulizer is used incorrectly?
1. Spheroidization decline:
This is because the spheroidized molten iron stays for a long time,
the residual magnesium gradually decreases,
the slag is not removed in time, and the sulfur will return to the molten iron,
which reduces or even...
How many process steps are required for the nodulizer to go from raw materials, production and processing to packaging and sending?
Hello everyone, I am the youngest girl in the factory.
I want to know: How many process steps are required for
the nodulizer from raw materials,
production and processing to packaging and dispatch?
The first is the selection of raw materials.
The raw materials such as ferrosilicon,
lanthanum cerium metal rare earth,
and magnesium ingots we use are all produced
by regular factories in the origin,
and the quality is absolutely guaranteed.
Secondly, we will transport the produced products to
the quality inspection department,
and...
Let you know that from raw materials to finished products in the hands of customers, several process steps are required.
The factory is my home, and epidemic prevention depends on everyone
I am the youngest girl in the factory.
do you know?
From the raw material to the finished product in the hands of the customer,
many process steps are required.
Taking the production of inoculum as an example,
we must first go through strict selection of raw materials.
We use 75 ferrosilicon produced by regular manufacturers
in Qinghai Huadian and other places of origin,
instead of general 72 ferrosilicon.
Rusted A3 steel, which can ensure the quality of
the...
Orders continue, overtime packing, delivery on time
Hello everyone, I am the youngest girl in the factory.
The factory is my home, and epidemic prevention depends on everyone.
Due to the epidemic prevention and control,
I have not been to the factory for some days,
but our workers are still fighting at the forefront of production.
They eat and live in the factory,
and have not gone home for a month in a row.
I just received a few videos of the current situation of the factory,
let's take a look
The factory is business as usual,
and we have also received orders from many old customers
and overseas...
It is necessary to distinguish the advantages and disadvantages of several spheroidizing methods in the production of ductile iron
Advantages and disadvantages of several spheroidizing methods
in the production of ductile iron.
Pressure plus magnesium method
The advantage is that when pure magnesium
is used for spheroidizing treatment,
the absorption rate of magnesium is high,
up to 70% to 80%,
and there is no smoke and dust during the treatment process,
and the working environment is good.
The disadvantage is that the processing equipment requirements
and costs are high;
the operation is complicated and strict;
the processing time is long, and the molten...
If you want to improve the performance of ductile iron, choosing a good spheroidizing treatment method is the key
If you want to improve the performance of ductile iron,
choosing a good spheroidizing treatment method is the key!
Ductile iron is obtained by spheroidization and
inoculation treatment to obtain spheroidal graphite,
which reduces the splitting effect of graphite on the matrix,
effectively improves the mechanical properties of cast iron,
and obtains higher plasticity, toughness and strength.
Today, ductile iron has rapidly developed into a widely used cast iron material,
second only to gray cast iron,
and people have higher and higher...
Popular Science: Characteristics of Inoculants with Different Compositions
Today, I will take you to understand the characteristics of
inoculants with different ingredients
1. 75 Ferrosilicon: This is the most commonly used inoculant,
and the content of aluminum and calcium plays
an important role in the inoculation effect.
2. Strontium-containing ferrosilicon:
This kind of inoculant has a strong ability to eliminate white mouth,
which is especially beneficial to improve the shape and
distribution of graphite in thin-walled castings.
3. Barium-containing ferrosilicon:
This type of inoculant has a strong ability to...
This time the order is a bit too much, overtime packing, delivery on time
Hello everyone, I am the youngest girl in the factory.
This is the inoculum produced by the masters of Difeng.
These inoculation blocks are about to be shipped to
the port and sent to foreign customers.
The masters produce products according to
the order requirements of these foreign customers,
This is the 20g inoculant produced by our master.
According to the requirements of the customer,
they are packaged in batches, and they will be sent away.
This batch of goods will be sent to South Korea.
Now what everyone sees is the manual screening...
How good is the inoculant for our Duwang fried products?
Hello everyone, I am the youngest girl in the factory.
Today, let's talk about it: the inoculant for
our king fried products from Nanjing Difeng.
At present, there are about 200 kinds of inoculants,
and there are more than 30 kinds of commonly used inoculants.
It is necessary to choose suitable inoculants for castings of different materials.
The wrong choice will cause some casting defects.
The types of inoculants are as follows:
1. Classification according to ingredients: silicon-based inoculants,
carbon-based inoculants, rare earth inoculants, etc.;
2....
Under the epidemic, is the factory operating normally?
Hello everyone, I am the youngest girl in the factory.
It is 9:00 in the morning and our master has already started production.
Many people are curious about what the factory looks like under the epidemic.
As you can see, our factory is still producing products.
This is the spheroidizing agent that has just been produced.
This batch of goods is going to be sent abroad.
Recently, foreign orders have surged,
and we are arranging the newly signed orders in an orderly manner.
The masters are also producing order products in an orderly manner.
Now the domestic...
How to increase the number of graphite balls in thin-walled ductile iron, how many do you know?
Hello everyone, I am the youngest girl in the factory.
Today we will talk about how to increase the number of
graphite balls in thin-walled ductile iron.
1. Increase the carbon and silicon content, that is, the CE value.
2. Ensure the necessary S content in the original molten iron.
Various sulfides are the original bases of spheroidal graphite cores.
Too low S content affects the formation of various sulfides
and reduces graphite nucleation cores.
3. Strengthen the breeding.
Improve the inoculation method and shorten the time from
spheroidization...
Quietly tell you: what are the measures to reduce or eliminate carbides?
Hello everyone, I am the youngest girl in the factory.
What are the specific measures to reduce or eliminate carbides
in thin-walled ductile iron?
Today I will teach you six methods,
remember to follow, like, and favorite~
First, strictly select pure charge to reduce the introduction of carbide elements;
Secondly, strictly control the melting temperature and overheating temperature;
Third, improve CE; use pretreatment processes such as silicon carbide;
Fourth, select low magnesium and low rare earth nodularizers
to reduce residual magnesium and residual rare...
What problems will be encountered in the manufacture of thin-walled ductile iron castings
Hello everyone, I am the youngest girl in the factory.
Today we will talk about:
what problems will be encountered in the manufacture of
thin-walled ductile iron castings?
First of all, let's take a look at thin-walled ductile iron castings.
We usually refer to castings with a wall thickness of
3-6mm as thin-walled ductile iron.
With the advancement of technology,
today's thin-walled ductile iron has been reduced to
2.5mm in defined wall thickness.
When manufacturing thin-walled ductile iron castings,
it is often...
Let's take a look at what work is like under the epidemic
Hello everyone, I am the youngest girl in the factory.
Many people are curious about what the factory
looks like under the epidemic.
As you can see, our factory is still producing products,
which are the spheroidizers and inoculants that have just been produced.
This is our screening and crushing workshop.
Our masters are working here.
The masters strictly control the quality of the products.
This year, many new apprentices have also been brought out,
who are dedicated to the company and dedicated to their work enthusiasm.
The epidemic has...
Cold knowledge: the particle size of the inoculant should not be too fine or too coarse
Hello everyone, I am the youngest girl in the factory.
It's science class time again!
The particle size of the inoculant should not be too fine or too coarse.
If the particle size is too coarse,
it cannot be dissolved and absorbed by the molten iron more quickly,
and the residual undissolved inoculant particles mixed into
the casting will deteriorate performance or lead to scrap.
The particle size should not be too fine.
The powdered inoculant is easy to be oxidized and burned,
lose the inoculum effect,
and will cause slag inclusions in...
Today, let's talk about our nodularizer
Hello everyone, I am the youngest girl in the factory.
Now all departments are working in an orderly manner,
and the masters produce products according to customer requirements.
This is that we send the finished products to
the laboratory for sample preparation and testing,
and they fully meet the standards~
Nodularizing agent acts on ductile iron,
which can promote the crystallization of graphite into spheroidization,
which is beneficial to obtain spheroidal graphite.
The strength of spheroidized ductile iron
is much higher than that of gray...
Quietly tell you: the most economical way to correctly master the use of nodularizing agent
Hello everyone, I am the youngest girl in the factory.
This is the product of the spheroidizer that has just been produced,
and they are about to be shipped to customers.
In the casting process,
the amount of nodulizer used will directly affect various properties of molten iron,
as well as the size, grade, thickness and other issues of the casting.
It can be seen that it is very important to master the correct use of nodulizer. .
For the situation that requires the size,
shape of the ladle, and the height of the dam in the ladle,
if the molten iron...
What is the role of ferrosilicon in steelmaking?
Hello everyone, I am the youngest girl in the factory.
Some netizens sent me a private message:
What is the role of ferrosilicon in steelmaking?
In order to obtain steel with qualified chemical composition
and ensure the quality of steel,
deoxidation must be carried out in the later stage of steelmaking.
The chemical affinity between silicon and oxygen is very large,
so ferrosilicon is a strong deoxidizer in steelmaking
for precipitation and diffusion.
Adding a certain amount of silicon to steel can improve the strength,
hardness and...
