Resin bonder diamond wheel
Resin bonders are used to bond loose abrasives, solidify into a
certain shape, and after heating and cementing, they have a certain
degree of hardness, strength and grinding performance. The resin
binders are composed of binders (resins) and various fillers.
The physical and mechanical properties of the binder are greatly
influenced by the type and amount of filler.
Therefore, the type and amount of filler must be chosen reasonably.
Resin bond should have the following properties: good bonding
performance, strength of the bond should be high, hardness should
Good heat resistance can improve the grinding efficiency and reduce
the surface roughness of the workpiece.
Good economy and environmental protection.
The resin that makes resin abrasive tool commonly is man-made
phenolic resin, epoxy resin, polysulfone resin, polyamide.
For the special requirement of quartz grinding tool, mainly
phenolic resin, some other resin is added.
Such as phenolic - epoxy resin, phenolic - polyamide.
If you need any products, do not hesitate to contact
Grinding wheel sizes
|Diameter(D)||Thickness(T)||Width of working layer (W)||Depth of working layer (X)|
|The grinding wheel thickness, diameter, arbor and diamond grit can
Grinding wheel usage
Grinding wheel operation
1. Before using, please check the resin grinding wheel whether it
has cracks and mute. If yes, cannot be used.
2. The line speed of resin diamond wheel shall not exceed the
provisions of safe working line speed.
3. Dressing the grinding wheel, we should use the special dressing
4. In the grinding process, we should be chose the correct coolant.
The reason and solution for the waste of resin bond grinding wheel
There is no doubt that the emergence of waste is not a kind of loss
for enterprises. There are two kinds of waste, one is repairable
and the other is irreparable.
In reality, any enterprise is trying to improve product quality, so
as to improve the market competitiveness of its products and make
it invincible in the fierce market competition.
Here are some reasons and solutions for waste of resin grinding
1. Raw material size and hardness of resin grinding wheel are
Method: strict according to ingredient list business accounting
ingredient, check is key procedure;
2. Body crack of forming blank
The hot pressing temperature is too high, the commodity is too cold
and hot, the temperature is too low when the core is removed, the
core should be removed in time, the raw material is subjected to
moisture transformation, or mixed material fault;
A. End crack
Molding material plasticity is poor, the method of unloading mold
and taking billet is improper.
Forming mold base is uneven or the backing plate is not too
B. peripheral cracks
Die wear is severe, when unloading die, too skew.
C. Aperture crack
The strength of blank part is low, the vibration during mold
unloading is too big, the core rod wear is too big or the taper is
too small, and the order of mold unloading is not in accordance
with the technical rules.
D. Diagonal cracks
The selected spring pad iron does not have the same spring force
and causes diagonal grain in the die.
Speed limit of fine abrasives too fast, insist on short pressure
time, too large space for mould cooperation.
E. Prevention of crack on resin grinding wheel
F. the plasticity of the mixture is well regulated, the molding
tool shall not exceed the regular wear standard, the template and
the pad iron shall adhere to excellent flatness, the thickness of
the pad iron shall be used together, and the spring force of the
spring pad iron shall be used together, and the mold shall be
unloaded according to the order of technical rules;
3. The mixed
Mix before and mixing process next to the side, with the finishing
Check all raw materials for impurities before adding ingredients.
4. Uneven mixture
Mix according to technical requirement.
Replace the parts of the mixer which wear too much at any time.
The powder resin material shall be screened according to the number
and times of the technical rules.
5. Forming hardness is inconsistent
The first part shall be checked as required, no less than 30% of
each batch of blank parts shall be checked, the weight of the
weight shall be checked frequently, and the survey pressure shall
The bridge is uneven.
Uniform cooling is required;
The appearance of the part "warping" without flat plane is called
This is caused by uneven cooling resulting in the shortening of the
Come from thin section grinding wheel and fine grain thin product
It is very easy to produce the bridge end waste when the grinding
wheel cools too fast.
7. Uneven arrangement and uneven hardness
Adjust the dry humidity of the mixture to make it have excellent
According to the technical requirements for the operation of
material and scraping.
Press the technical requirements first with the pad iron, adhere to
the accuracy of the press;
Uneven striping, wet mix, or aggregate, uneven feeding, wear of the
mold, severe leakage, need to replace the mold;
8. The two ends are not parallel
Stick to the precision of the pressure machine and operate
according to the technical rules.
The equipment is protected within the precision range required;
Control the temperature hardening according to the standard
hardening curve of commodity, and control the quality of blending
Molding temperature is too high or too low, demand adjustment
The curing temperature is too high and the curing furnace is out of
Mismatch of the linking agent;
Some of the superhard grinding tools have a convex surface
deformation or the whole surface of the swelling, and resin luster,
some show a turtle - like crack.
A. The heating rate is too fast or the temperature is shaken
greatly, which simply makes the fine particle size, high hardness
and tight arrangement of parts bubble and expand.
Because this kind of commodity contains connection dose much or
stoma is small, if the temperature control is not accurate to make
the heating rate is too fast, can cause connection agent to react
violently, volatiles quantity increases sharply, the air pressure
inside billet body is big and make the product bubble and expand.
B. The mixture of type materials is not uniform, and the materials
contain a combination of agents or solvents with relatively low
boiling point (such as ethanol and acetone).
C. Due to the negligence of mixing and molding process, the contact
dose of the parts increased, the single weight increased and the