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ANSI B18.2.1 Bolt Processing Technology
Adaugat pe 13/01/2020 03:28:42

ANSI
B18.2.1
 bolt
blackening treatment has the following requirements for appearance:


1.
The appearance of blackening treatment is blue black or dark black.


2.
The crystal of the film is dense and uniform, the product has no exposed bottom,
no obvious color difference, no whitening and other abnormal
phenomena.


If
the blackening process is abnormal, the following will occur.


1.
White spots and flowers. This phenomenon is mainly manifested by the different
shades of the oxide film, white spots and flowering.


2.
The color is not correct. The product becomes blue or red after
blackening.


3.
The oxide film is not strong. Because the product was not thoroughly cleaned
before degreasing, the blackening treatment took too long, the blackened layer
was too thick, a blackened floating layer was formed, and the adhesion was poor.
The water after the product was acid washed was not cleaned and the residual
acid was brought to the In the blackening liquid, the local reaction is
excessive, and the surface of the workpiece has rust.


4.
Rust spots. The reason for changing the color of the product is the oxidation
reaction, so the blackened product needs to be dehydrated and sealed in time. If
the darkened product is not immersed in oil in time to seal, the activated
elements and air continue to react, and sometimes discoloration
occurs.

Tag-uri: ANSI B18.2.1


Advanced Manufacturing Technology Of Ansi B18.2.1 Bolts
Adaugat pe 06/01/2020 03:34:02

     1. Stable. Under relatively harsh environment, the performance remains
stable. General products can be stored at minus 40Co to 80Co and their
performance is stable. Special products can be stored at minus 54Co to 150Co and
their performance is stable.


      2.
Reliable. We have the most advanced anti-loosening technology, which meets NAS
(International Aviation Specifications) standards and MIL (US military
specifications) standards.


      3.
Efficient and efficient, because it is a pre-coating process, it is easy to use,
suitable for automated equipment, and readily available.


      4,
brand, we use imported raw materials, high quality assurance, the company has
strong technical force, can be customized according to the different needs of
customers, different products and professional equipment, to provide the best
solutions for enterprises.


      5,
environmental protection without pollution, non-toxic.


      6,
a wide range of applications, aerospace industry, defense industry, automobiles,
motorcycles, bicycles, electrical products, electronics, bathroom equipment,
furniture, tools, toys, sports equipment, glasses.


      If
you want to buy
ANSI
B18.2.1
 bolts,
then Haiyan Yihui Hardware Technology Co., Ltd. is a good choice for you. We can
bring you comprehensive support and service. Welcome customers'
comments.

Tag-uri: ANSI B18.2.1


Ansi B18.2.1 Bolt Anti-loosening Method
Adaugat pe 30/12/2019 03:44:06

1 Bolt joints commonly used in anti-loosing methods include friction
anti-loosening, mechanical anti-loosening and permanent anti-loosening. Among
them, the methods of using friction to prevent loosening include double nuts,
spring washers, and self-locking nuts; the methods of using mechanical to
prevent loosening include cotter pins and slot nuts, retaining washers, finned
washers for round nuts, and tandem steel wires. ; Permanent anti-loose methods
include end riveting, punching points and bonding.


  2
Bolted connections generally have self-locking performance.
ANSI
B18.2.1
 bolts,
but under impact, vibration or variable load, and when the working temperature
changes greatly, should consider the connection to prevent loosening. According
to the working principle, anti-loosening can be divided into frictional
anti-loosening. There are three types of mechanical methods: anti-loosening and
permanent locking. Friction prevention is achieved by pressing the bolt pair
horizontally or longitudinally to produce friction to achieve loosening;
mechanical method of loosening is to prevent the loosening of the connection by
restraining the bolt pair; permanent stop and loosening is welding , Punch
point, flanging and other methods to fix the screw and nut.


  3
In general, the connecting bolts have a certain self-locking property, and they
will not loose automatically under static load conditions. However, due to the
working conditions of the connection, shock, vibration and variable load will
inevitably exist. Under these working conditions, the friction between the bolt
pairs will disappear or decrease instantly; at the same time, in the case of
high temperature or large temperature changes, the material will creep and
stress relax, and the friction will be reduced. After multiple actions, the
connection will gradually loosen. The essence of anti-loosening is to prevent
the relative rotation of the bolt pair, that is, the relative rotation between
the bolt and the nut (between the inner bolt and the outer bolt). There are
three commonly used anti-loosening methods: frictional anti-loosening,
mechanical anti-loosening and permanent anti-loosening. Mechanical and
frictional locks are called removable locks, and permanent locks are called
non-removable locks. Common permanent locks are: spot welding, riveting,
bonding, etc. In this method, bolts and fasteners are mostly destroyed during
disassembly and cannot be reused. Common friction and anti-loosening are: the
use of gaskets, self-locking nuts and double nuts. Common mechanical
anti-loosening methods: the use of split pins, stop pads and steel wire ropes.
Mechanical anti-loosening methods are more reliable. For important connections,
mechanical anti-loosening methods should be used.

Tag-uri: Ansi B18.2.1


ANSI B18.2.1 Bolts Are Properly Cleaned
Adaugat pe 16/12/2019 03:50:36

    In
our daily life and industry, the materials used to fix objects are mainly
ANSI
B18.2.1
 bolts.
Then after a long time of use, it will inevitably adsorb some dust or oil on the
ANSI
B18.2.1
 bolts.
If it is left untreated for a long time, it will easily cause corrosion. The
daily cleaning work is particularly important, but the
ANSI
B18.2.1
 bolts
are properly cleaned Do you really know the method?


    1.Contamination
during rinsing


    After
quenching, it was washed with a silicate cleaning agent and then rinsed. A solid
substance appeared on the surface. This substance was analyzed with an infrared
spectrometer and it was confirmed that it was an inorganic silicate and iron
oxide. This is caused by silicate remaining on the surface due to incomplete
rinsing.


     2.
Unreasonable stacking


    After
tempering, there are signs of discoloration. After soaking, oily residues are
found after volatilization. Such substances are high content of lipids. This
shows that during the rinsing period, it was contaminated by cleaning agents and
quenching oils, and melted at the heat treatment temperature, leaving chemical
burn scars. Such substances confirmed that the surface was not clean. Analysis
by infrared spectrometer is a mixture of base oil and ether in quenching oil.
Ethers may come from the addition of quenching oil. The analysis results of the
quenching oil in the mesh belt furnace confirmed that there was slight oxidation
in the quenching oil due to irrational stacking during heating, but it was
almost negligible. This phenomenon was related to the cleaning process and not a
problem with the quenching oil.


     The
above two situations are the impact of failure to adopt the correct
ANSI
B18.2.1
 bolt
cleaning method, because the purpose of our cleaning work is to ensure the
surface of the product is clean and does not affect its use. However, if the
cleaning method used is not correct, it will not only do nothing beneficial to
ANSI
B18.2.1
 bolts,
but will also damage the product itself, which is worth the loss.

Tag-uri: ANSI B18.2.1


How Ansi B18.2.1 Bolt Manufacturers Face Pressure
Adaugat pe 09/12/2019 03:42:37

Many
foreign high-strength standard parts companies have continuously entered this
emerging market in China, and have taken root in China. They use our cheap labor
to produce high-strength standard parts and sell them in China.

As
an
ANSI
B18.2.1
 bolt
manufacturer, in the face of this pressure, how can we keep our products from
being suppressed, and their development is getting better and better, it has
become a problem for many enterprises to think about, and it is also a direction
for the future development of enterprises.

And
in the face of the lack of this situation of Chinese
ANSI
B18.2.1
 bolt
brands, companies must also consider it.

The
influx of so many companies from foreign countries into the Chinese fastener
market also means that many
ANSI
B18.2.1
 bolt
companies need to constantly break through and make their own companies
gradually become a company that can integrate with the international market. The
development of our high-strength standard parts has been of great
help.

We
can see that compared with many foreign companies, many
ANSI
B18.2.1
 bolts
in China are mainly big brands. This makes us less competitive in the
high-strength standard parts market. Therefore, China has adopted a familiar
price war. However, because it is in the fastener market in China, the price war
does not have many advantages for Chinese enterprises now, so the best way in
China is to create a large
ANSI
B18.2.1
 bolt
brand, a well-known brand, and have its own creativity , Can be in line with
international high-strength standard parts, so that competition in the market
will be more powerful.

After
China's high-strength standard parts have developed to a certain degree, we can
use our technological advantages to confront foreign-funded enterprises. Only in
this way, can China's high-strength standard parts maintain high-intensity
competition High intensity development.

Tag-uri: Ansi B18.2.1


Yihui ANSI B18.2.1 Bolt Quality Improvement
Adaugat pe 02/12/2019 03:48:40

   In
recent years, manufacturers have continuously improved the quality of
ANSI
B18.2.1
 bolts,
and they have also standardized the accuracy and precision of
ANSI
B18.2.1
 bolts.
Therefore, Haiyan Yihui Hardware Technology Co., Ltd. in order to meet the
strict and precise requirements of bolts
ANSI
B18.2.1
 bolt
specifications, at the expense of local purchase of several metal disc image
screening machine (also known as standard indexing For the special requirements
of customers, in the later stage of mass production, accurate screening and
acceptance of bolt specifications are performed, and 100% of the bolts that meet
the specifications are delivered to customers.


   According
to Haiyan Yihui's research and analysis, this metal disc image screening machine
is based on the CCD image washing system (German original lens computer and
software system), and the computer program developed by China to make the
machine operate normally. The screening accuracy can reach plus or minus 0.03mm,
and the screening speed is 500-1200 / PPM. However, after purchasing this
screening machine, Yihui, after technical training and machine control
operations, successfully carried out an orderly screening of PA round head
self-tapping bolts. From the screening machine, there are two exits after
screening: qualified products that meet specifications and unqualified products.
In terms of screening speed, the amount of screening in a day can reach nearly
200,000. With the application of this metal disc screening machine, Haiyan
Yihui's product quality is once again improved, and the product pays more
attention to diversity and controllability. Haiyan Yihui believes that no matter
whether it is a customer or a product, there are strict requirements that will
allow us to grow. We will climb to a higher level and dare to try and use the
power of technology to create value and enhance the brand.

Tag-uri: ANSI B18.2.1


The Role Of ANSI B18.2.1 Bolt Coating
Adaugat pe 25/11/2019 03:40:43

Gray
phosphate

Gray
phosphate is another popular coating designed to protect
ANSI
B18.2.1
 bolts
from corrosion. However, it is believed to provide a low level of protection.
This means that it is not suitable for situations where the risk of corrosion is
high. An example is in marine applications. In fact, this type of coating is
well suited for use in dry environments, rather than where
ANSI
B18.2.1
 bolts
may be in contact with large amounts of water. In order to achieve optimum
performance, this type of coating needs to be applied correctly. This means that
when you want to use
ANSI
B18.2.1
 bolts
with a grey phosphate coating, it is wise to ensure that it is purchased from a
manufacturer that works with a well-known coating company.


Yellow
zinc

This
is a coating that is applied electrically to
ANSI
B18.2.1
 bolts
to provide a low level of corrosion protection. It can be used in
ANSI
B18.2.1
 bolts
that may be in contact with water or in a humid environment. As with gray
phosphate, it must be applied correctly to provide the desired level of
corrosion protection.


When
purchasing stainless steel
ANSI
B18.2.1
 bolts,
be sure to provide them with the coating that best suits your application.
Understanding generic products and how they work will help you solve this
problem, reducing the risk of buying less than ideal products.

Tag-uri: ANSI B18.2.1


Packaging And Transportation Of ANSI B18.2.1 Bolts
Adaugat pe 18/11/2019 03:39:12

       Maintenance
ANSI
B18.2.1
 bolt
requirements pay attention to roughly three aspects, three major aspects are as
follows:


       The
first one is that
ANSI
B18.2.1
 bolting
joints should be supplied by the manufacturer according to the batch, and each
of the boxes must be matched and equipped with
ANSI
B18.2.1
 bolts
and nuts. The packing box must be able to satisfy the needs of storage and
transportation, and also have the function of waterproofing and sealing. The
certificate of conformity and quality assurance of the product should be
included in the box of the
ANSI
B18.2.1
 bolt.
Also indicate the lot number and standard and write the number of bolts on the
outside of the package.


       The
second is to carry out light transportation and unloading during transportation
and storage, and to prevent the thread from being damaged. If it is found that
the thread damage is serious or because it is raining, ANSI B18. 2.1 bolts can
not be used.


       The
third point to note is that
ANSI
B18.2.1
 bolted
joints should be stored in an indoor warehouse. The ground must have certain
moisture-proof items. It is also required to be sorted and stored according to
the batch number and standard. Can not be mixed batch storage. If it is the
high-strength bolt used in the movable room, the sub-package box code should be
placed on the bottom layer, and it should be overhead and cannot be attached to
the ground. One requirement here is that the height of the
ANSI
B18.2.1
 bolt
is greater than three hundred millimeters from the ground, and the code height
is generally no more than five to six layers.

Tag-uri: ANSI B18.2.1


ANSI B18.2.1 Bolt Breakage Phenomenon
Adaugat pe 11/11/2019 03:53:44

ANSI
B18.2.1
 bolts
are an inconspicuous thing in our daily lives. Although it is inconspicuous, it
plays a very important role. However, some
ANSI
B18.2.1
 bolts
are broken when they are used. Why is this?


1.
ANSI
B18.2.1
 The
head of the bolt is too large and there is no R angle below the head. When the
ANSI
B18.2.1
 bolt
is screwed, there is nothing to hold the head and it is easy to be broken.
Adding an R angle below the head is to add a protective head underneath to
support the head. Let us protect the head of the
ANSI
B18.2.1
 bolt
when tightening the
ANSI
B18.2.1
 bolt.


2.
If
ANSI
B18.2.1
 bolts
are
ANSI
B18.2.1
 bolt
material made of carbon steel and the strength of
ANSI
B18.2.1
 bolts
is high or high, mainly because
ANSI
B18.2.1
 bolts
do not remove hydrogen, resulting in ANSI B18 .2.1 The bolt has broken
brittle.


3.
ANSI
B18.2.1
 The
head of the bolt is too large or too deep to cause the head of the
ANSI
B18.2.1
 bolt
to break.


4.
Use the torque of this
ANSI
B18.2.1
 bolt
itself to tighten the
ANSI
B18.2.1
 bolt.

Tag-uri: ANSI B18.2.1




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