FAQ
Phenomenon cause measure
Friction and wear lead to reduced tool durability (scratch wear increases sharply). Mechanical wear due to insufficient lubricity at the tip. Oily cutting oil with a high fat content
Replace active cutting oil with inactive oil based cutting oil
If the cutting fluid is significantly degraded, it should be replaced with a new liquid
Increase the liquid supply and supply pressure, and supply liquid directly to the flank.
When using an aqueous cutting fluid, use an emulsified cutting fluid containing an extreme pressure additive with excellent lubricity and use it at a high concentration.
The tip of the knife is stuck, and the built-up edge is broken. The anti-adhesive property is not good, so that the built-up edge is abnormally enlarged. The blade edge is damaged and peeled off due to the broken of the built-up edge, thereby generating friction and wear. Switching to the active cutting fluid
Check the activity, if it is reduced, add additives (oily cutting oil)
Replace water-based cutting fluid with oil-based cutting oil
Excessive heat generation leads to reduced tool durability (knife tip softening, melting, chip discoloration). Insufficient cooling for the heat storage of the tip portion. Oil-removing cutting oil is an aqueous cutting fluid
Increase oil supply and supply pressure
Keep the temperature of the cutting oil (not rising)
Poor processing accuracy, uneven cooling or insufficient
Excessive depth of cut due to adhesion of built-up edge, sufficient oil supply
Keep the cutting temperature constant
Switch to oily cutting oil with excellent anti-adhesive properties
Supplemental extreme pressure additive (oily cutting oil)
When changing from oily cutting oil to water-based cutting fluid, tool durability is reduced. Insufficient lubricity due to inherent performance differences in the type of cutting fluid. Emulsified cutting fluid containing extreme pressure agent is used at high concentrations.
Supplying the stock solution of the aqueous cutting fluid to the tool spray
Tool durability becomes shorter during use due to the intrusion of the hole causing a decrease in additive concentration
Reduced concentration due to replenishment only. Replace with new liquid
Supplementary additive
Take measures to prevent oil spills
Check the use solution and try to replenish the stock solution
Due to damage, the durability of the tool is reduced. The thermal shock of the intermittent cooling is broken. The liquid supply method is improved, and the liquid supply range is expanded.
Switch to a poorly cooled cutting fluid
Carbide tools do not use cutting fluid for interrupted cutting
Processed surface deterioration (roughness, tear, strain) due to insufficient lubrication and adhesion of built-up edge
Chip adhesion causes strain (dead processing) Replace with cutting fluid with good adhesion
Improve the filtration method to remove fine chips
Improve the liquid supply method so as not to "oil off" phenomenon
Drilling, reaming, tapping bonding and breakage The oil cutting phenomenon occurs in the blade edge, and the lubrication is insufficient to increase the liquid supply amount
Switch to a cutting fluid with good lubricity and adhesion resistance
In the case of an aqueous cutting fluid, the dilution ratio is checked and used at a high concentration.