Trigger of tool switch and production technique of trigger.

Abstract

The invention discloses a trigger of a tool switch and a production technique of the trigger. The trigger is prepared from, by weight, 20-35 parts of zinc borate, 0.5-4 parts of nano lanthanum oxide, 2-15 parts of magnesium oxide, 0.5-4 parts of nano cerium oxide, 1-5 parts of graphite fibers, 5-15 parts of chromium, 3-8 parts of nickel powder, 5-10 parts of attapulgite, 8-13 parts of manganese, 15-35 parts of aluminum powder, 20-40 parts of iron oxide and 1200-1600 parts of iron powder. The production technique of the trigger comprises the steps that when the temperature of a blast furnace reaches 200-350 DEG C, the raw materials are added, and a fluxing agent is added into the blast furnace at the same time; when the temperature of the blast furnace reaches 700-800 DEG C, a refining agent is added; when the temperature of the blast furnace reaches 700-800 DEG C again, a modificator is added for modification; and when the temperature of the blast furnace reaches 720-770 DEG C, slagging-off and discharging out of the furnace are conducted, and pouring is conducted rapidly, so that the trigger is obtained. The production technique is simple and environmentally friendly; the machined trigger has good performance in the aspects of tensile strength, bending strength, percentage elongation after fracture and the like, and market requirements are met completely.

Description

Technical field [0001] The invention relates to the field of mechanical material processing, in particular to a trigger of a tool switch and its production process. Background technique [0002] Mechanical equipment usually uses metal materials as the main body of various parts and tools. In order to achieve high-strength, high-speed industrial applications. The mechanical properties of metal materials such as strength, hardness (wear resistance), plasticity and toughness are usually manifested as mutual restriction and mutual influence, which together form a contradictory unity. For example, when the hardness (surface hardness) of the material is high, its toughness is also difficult to guarantee; and if you want to obtain a metal material with good workability (low hardness, low toughness) and obtain good use characteristics (high hardness, There are also constraints and contradictions between high-strength practical tools. According to the actual use requirements of differe...

AI Technical Summary

Problems solved by technology

[0003] The trigger switches currently on the market are widely used in machine tool electrical appliances, hardware tools and other fields, many of which are relatively high-power electrical appliances, such as cutting machines, etc. The operating environment of such machines is generally poor, with heavy loads and long working hours. Therefore, the requirements for the switch are relatively high

However, most of the tool switches currently on the market cannot meet the life requirements. The main problems are as follows: the alloy material of the trigger or push rod is made of general alloy steel, which is prone to deformation after long-term use, and the mechanical strength is not enough, resulting in inflexible switch action. , or even failure; when the push rod and the trigger move, they touch the wall back and forth, the friction is large, and the parts are severely worn