What effect does the creep on the creep treatment?
Q: What effect does the creeping agent have on creeping treatment?
A: The creeping agent has an important influence
on the success or failure of creeping treatment.
Adding an appropriate amount of related elements to
molten iron can obtain vermicular graphite cast iron.
For example, rare earth elements, especially cerium,
can be used to obtain vermicular graphite,
but the amount of rare earth elements
that need to be added is relatively high,
especially for sulfur-containing the higher amount of
molten iron needs to add a lot of rare...
You only have nodulating agent and inoculant. Do you have other products
Q: You only have spheroidizers and inoculants in your home,
do you have other products?
Nanjing Dysprosium is an enterprise integrating scientific research,
processing and production, import and export,
mainly engaged in nodularizing agent, inoculant,
creeping agent, steelmaking deoxidizer and alloy wire.
Today we will show you other products of the factory.
The vermicularizer is an additive added to
the molten iron to obtain a vermicular graphite structure,
and is a widely used composite alloy vermicularizer
containing a variety of...
Every link, Nanjing dysprosium peak strict control
Today is the Dragon Boat Festival,
I wish everyone a healthy Dragon Boat Festival~
Our factory has workers on duty to carry out daily production,
the masters are working hard~
This is the spheroidizer produced by Nanjing Difeng.
In order to ensure the production quality, we mainly do this:
First of all,
this is the raw material for the production of nodularizing agent,
which is a high-quality product produced
by a regular factory in the origin of this raw material.
It can be said that we are very strict in the selection of raw...
Do you really know what ballization is good?
What is good spheroidization?
The spheroidization rate reaches 1-2 grades steadily,
and the lower the residual content of Mg and RE, the better.
Residual Mg characterizes spheroidization recession,
and the purpose of maintaining a minimum residual Mg content
is to ensure that spheroidization recession
does not occur before solidification.
The requirements for spheroidization grade vary
with product performance requirements.
If the tensile strength and elongation are emphasized,
as long as the performance is qualified,
even...
Regarding excessive breeding, what process measures are not recommended to use?
What technological measures are not recommended to use?
1、the waste of raw and auxiliary materials
caused by the extensive inoculant addition method is very serious.
Simply adopt the method of flushing into the bag,
throw the inoculant to the bottom of the bag,
and the slag in the furnace is not cleaned up when the water is discharged,
and the loss of the inoculant is more than 20%.
2、 the temperature of molten iron is not well controlled,
and in the case of inoculant particle size mismatch,
the inoculant is not completely...
The order of spheroidizing agent sent to Japan will be shipped soon
Last week, I went to the workshop to help.
The batch of 8 tons of inoculated blocks that were processed in
a hurry has been successfully delivered with high quality,
and has also received high praise from customers~
Our products such as spheroidizers and inoculants produced by
Nanjing Dyfeng have a special responsible person to
strictly control every link from order signing to final product delivery,
and to control product quality in an all-round way.
Today, let's take a look at the newly produced spheroidizer,
which is a new batch of...
You get what you pay for. The price is worth it!
Production is fast, and we divide workers
into morning shifts and evening shifts.
There are 6 workers in one shift,
and they produce 6 furnaces of molten iron in one shift,
which will make about 300 kilograms of inoculant.
That is to say, with the furnace running 24 hours a day,
we can produce about 600 kilograms of inoculant,
and it will take two days to produce 1.2 tons.
We basically need more than 10 days to produce 8 tons,
so it is really time-consuming and laborious.
I have never tried to make inoculum in the workshop...
I was set up by my boss in order to benefit an old client!
After I made an offer, he asked if I could make it cheaper?
So I went to apply for a discount with the boss.
The boss said:
The labor cost of our inoculation block is really very high,
and the price cannot be reduced.
I guess you don't know much about the production process.
Just recently, we have an order for 8 tons of inoculated blocks.
You can go to the workshop with the workers to experience
how to produce inoculated blocks.
Wondering how labor-intensive an incubator is?
Come and see with me.
You see a lot of products on this...
This is the whole process of quality control of gestation block, be sure to see the last!
Q: Do you want to know how the inoculant guarantees
the quality control in the production?
Come and see the factory with me. go~
Hello everyone, I am the youngest girl in the factory.
Here is the product quality inspection process.
After I have put on the dust cap, dust mask and gloves,
I start the quality control work.
1、In the process of manual screening,
we need to screen the defective products
with holes and poor shape in the inoculation block.
We put these substandard inoculum products
into recycling bins for re-melting.
2、We...
Immersive experience of the production process of gestation block
Q: How is the inoculum produced and processed?
This is a newly produced inoculation block.
Now the factory is short of manpower,
so I also join the production.
The production of inoculum is a complex affair.
First of all: the masters prepare the raw materials,
put them into the intermediate frequency furnace for melting,
and pour the molten iron into the corresponding mold after melting.
Second: the masters push the mold to
when the mold is not completely cooled.
Then put on heat-resistant gloves and beat the mold in the heat.
Finally: the...
Once the product has a quality problem, whether it is necessary to push the responsibility to the quality supervision department?
Today, let's talk about the quality of the product.
Product quality problems are usually due to:
1、If the problems before product development are not dealt with properly,
and the mass production pass-through rate is too low,
we hope to rely on quality to fight fires to
reduce defective or substandard products;
2、when the customer pressed for the goods and put pressure on it, the boss spoke according to his so-called actual experience,
and implemented special release for products
that were not within the standard range,
resulting in product...
The other 3 principles in the Golden principle of choosing ductile iron
Today, Let's talk about the other 3 principles of
the 6 golden principles for selecting ductile iron castings.
Remember to like and favorite~
4. The principle of selection of phosphorus
Phosphorus is a harmful element.
The phosphorus content in ductile iron should be as low as possible,
generally less than 0.08%.
For more important castings,
the phosphorus content should be less than 0.05%.
5. The principle of selection of sulfur
Sulfur is an anti-spheroidizing element.
It has a strong affinity with spheroidizing...
The 6 Golden principles of ductile iron, you must remember!
These 6 golden principles for selecting ductile iron castings
that will be mentioned in today's Dyfeng science class
1. Principles for the selection of carbon and carbon equivalents
Carbon is the basic element of ductile iron,
high carbon is helpful for graphitization,
and the upper limit of carbon equivalent in ductile iron
is based on the principle that no graphite floats.
2. The selection principle of silicon
Silicon is a strongly graphitizing element.
In ductile iron, silicon can not only effectively reduce
the tendency of white mouth and...
Nanjing Difeng peak spheroidizing treatment special coverslip
Hello everyone, I am the youngest girl in the factory.
Today, I will bring you to the factory to see our
special covering agent for spheroidization from Nanjing Dyfeng.
Due to its pure composition,
reasonable and moderate specific gravity,
and strict particle size range,
our covering agent can greatly stabilize
the spheroidization process when used,
and can significantly improve the recovery rate of magnesium.
In addition, the covering agent is also conducive to
the floating of gas and inclusions in the casting,
which achieves the...
Today, share the daily life of our factory, refueling people!
The factory is my home, and epidemic prevention depends on everyone
Hello everyone, I am the youngest girl in the factory.
This is the spheroidizer that will be sent to Anhui soon.
Our factory masters added a few night shifts to produce it,
and all tests have been completed and passed.
Although the epidemic situation is repeated now,
our orders continue to be made.
The masters use their professional, dedicated,
serious and careful spirit in every process link.
Look! This is the product that is being produced.
After the production of these...
The company has entered a batch of raw materials to see that we are all accepting the entire process
Today the company has imported a batch of raw materials,
and our engineer is checking it.
Come with me to see the scene and learn by the way.
Calcium silicon as our raw material.
Mainly used as an inoculant for cast iron.
Silicon calcium has strong reducing ability
and is also used as a deoxidizer for high-quality steel.
Since calcium is very active at the steelmaking temperature,
the effect is not easy to stabilize,
so it is advisable to add some kind of slowing agent.
At the same time, in the production of cast iron,
calcium...
What are the serious consequences of adding too much inoculant?
Inoculant is a substance that can promote graphitization,
reduce the tendency of white mouth,
improve the morphology and distribution of graphite,
increase the number of eutectic groups,
and refine the matrix structure.
Let's take a look at the consequences of excess inoculant addition.
1. Excessive inoculation, excessive silicon content,
silicon brittleness will occur if the silicon content exceeds a certain value,
and the final silicon content will lead to
the thickening of A-type graphite;
it is also easy to produce shrinkage...
Nanjing Difeng's raw material - ferrosilicon
Hello everyone, I am the youngest girl in the factory.
Today I want to talk to you about one of our raw materials: ferrosilicon.
Ferrosilicon is an iron alloy composed of iron and silicon.
It is often used as a deoxidizer in steelmaking.
At the same time, because SiO2 generates a lot of heat,
it is also beneficial to increase the temperature of
molten steel while deoxidizing.
Ferrosilicon is often used as a reducing agent in
ferroalloy production and chemical industry.
The ferrosilicon used in our factory is above 75 ferrosilicon.
The source is...
Do you want to know the difference and connection between spheroidizing agent and inoculant ？
Most of the inoculants and nodulizers are used in casting.
What are the differences and connections between
inoculants and nodulizers?
The inoculant can promote graphitization,
reduce the tendency of white mouth,
improve the morphology and distribution of graphite,
increase the number of eutectic groups,
and refine the matrix structure.
It has a good effect in a short time (about 5-8 minutes)
after inoculation treatment. .
Nodulizer is an additive that can promote
the crystallization of graphite into spherical shape in ductile...
Two points to teach you how to use the inoculant
Today we will talk about a few points that need to be mastered
when using inoculants.
Before using the inoculant,
it is necessary to select the appropriate inoculant treatment method
and add the appropriate inoculant according to
the cast iron castings produced.
The foundry should select a method that is more suitable for
the characteristics of the enterprise through experiments
according to specific conditions.
Once the cold treatment method is determined,
it is necessary to strictly control the process to ensure
the...
Take you to Get the "best" spheroidizer
How to evaluate the quality of the nodulizer?
There are several common judgment criteria,
remember to click the love on the right side of the screen to collect it:
(1) The affinity of spheroidizing elements with elements such as
sulfur and oxygen in molten iron.
(2) The ability of spheroidizing elements to change
the shape of graphite from flake to spherical.
(3) The density and boiling point of the nodulizer are lower than
those of the molten iron.
The low density can automatically float in the molten iron,
and the boiling point is lower...
