CN202468904U

CN202468904U - Wear resistant gear

Info

Publication number: CN202468904U
Application number: CN2011204270196U
Authority: CN
Inventors: 汪鸿涛; 李明辉; 汪洋红帆
Original assignee: Bill Anda Pinghu New Material Science And Technology Ltd
Current assignee: Bill Anda Pinghu New Material Science And Technology Ltd
Priority date: 2011-11-01
Filing date: 2011-11-01
Publication date: 2012-10-03
Anticipated expiration: 2021-11-01

Abstract

Provided is a wear resistant gear. The gear is hollow inside, gear teeth are arranged on the external side of the gear, and a surface coating composited by Ni-P molybdenum disulfide is arranged on the external side of the gear teeth. The thickness of the surface coating is in the range of 5-7 [mu]m. The gear adopts chemical composite plating technology, and the surface coating has excellent wear resistance and antifriction properties, therefore, the antifriction and wear resistance properties of slide blocks are greatly improved, and the gear is good in use effects after being used by clients; in addition, the gear is free of harmful ingredients, and is safe and environmentally friendly.

Description

A kind of wear-resistant gear

Technical field

The utility model relates to a kind of wear-resistant gear, is specifically related to a kind of gear that adds thick coating that has, and belongs to the technical field of component of machine.

Background technique

Gearbox mainly is made up of axle and gear; So the life-span of gear has determined the working life of gearbox; The car speed changer has several like this functions: change velocity ratio; Enlarge driving wheel torque and change in rotational speed scope,, motor is worked under the operating mode of favourable (power is higher and oil consumption is lower) to adapt to the driving conditions of frequent variation; Under the constant situation of hand engine rotation, automobile can be fallen back go; Utilize neutral, interrupt transmission of power, with motor can start, idling, and be convenient to shift of transmission or carry out power output.

In recent years, molybdenum disulfide MoS ₂Coating is at component of machine, auto parts and components, the research in the mould and use very active.This is because MoS ₂Coating has high corrosion resistance and excellent characteristics such as lubricity.But, MoS ₂Abrasion property is relatively poor, when it is applied in the mould of making plastic article and during other position that friction is bigger relatively, is easy to generate wearing and tearing and comes off, thereby produce harmful effect to producing.Therefore, the researcher begins to use process for modifying surface such as boronising, high temperature oxidation, thermal spraying or ion to inject or the like both at home and abroad recently, makes die surface produce the compound of ultrahigh hardness, to improve its wear resistance.These methods have played good effect to the wear resistance of improving mould; But crisp hard formation in die surface formation; Because hardness is too high, increased the degree that do not match with the hardness of relative friction pair, add the wear extent of having shown relative friction pair; Thereby might form a large amount of abrasive dusts and sneak into surface of plastic products, cause goods to scrap.

MoS ₂Have excellent chemical stability and good self lubricity, it is outstanding solid antifriction material, and friction factor is merely 0.05, therefore, applies MoS in shoe surface ₂, with the sliding friction property that improves slide block greatly.But, MoS ₂Intensity own is low, and surface energy compatibility extremely low and metal is poor, directly with MoS ₂It is low to be coated in its adhesive strength of shoe surface, is prone to peel off.

The model utility content

The purpose of the utility model is, a kind of wear-resistant gear is provided, to overcome the above-mentioned shortcoming and defect of existing in prior technology.

The technical problem of the required solution of the utility model, can realize by the following technical programs:

A kind of wear-resistant gear, said gear set inside hollow, said gear outer installment teeth is characterized in that, the cover coat of said teeth outer installment nickel phosphorus molybdenum disulfide composite plating layer.

Wherein, the thickness of said cover coat is 5～7 μ m.

Further, the preferred thickness of said cover coat is 5 μ m.

The beneficial effect of the utility model:

Adopt Technology of Chemical Composite Plating, can obtain cover coat (Ni-P-MoS in shoe surface ₂Compound), MoS wherein ₂Content at 5-12vol%, the smooth densification of cover coat.

Cover coat has excellent abrasive and antifriction quality, has improved the friction and wear behavior of slide block greatly, and is good through client's using effect.

There is not any oxious component, safety and environmental protection.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Reference character:

Gear 100, mesopore 200, teeth 300 and cover coat 400.

Embodiment

Below in conjunction with specific embodiment, the utility model is described further.Should be understood that following examples only are used to the utility model is described but not the scope that is used to limit the utility model.

The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition that manufacturer provides is carried out.

Embodiment 1

A kind of wear-resistant gear, as shown in Figure 1, gear 100 set inside mesopores 200, gear 100 outer installment teeth 300.

The cover coat 400 of teeth 300 outer installment nickel phosphorus molybdenum disulfide composite plating layers.

Wherein, the thickness of said cover coat is 5～7 μ m.

Further, the preferred thickness of said cover coat is 5 μ m.

The preparation process and method of the utility model:

Gear 100 is through oil removing, and the deoxidation film after the pretreatments such as activation, can carry out chemical Ni-P plating-MoS ₂Chemical Ni-P plating-MoS ₂Require MoS ₂Particle can be evenly dispersed in the solution.

It is the MoS about 0.3～0.5 μ m that the utility model adopts particle diameter ₂Particle.In acid chemical plating nickel solution, add an amount of MoS ₂Particulate, and carry out mechanical agitation.Chemical Ni-P plating-MoS ₂Process conditions following:

NiSO ₄·6H ₂O：25g/L；

NaH ₂PO ₂·H ₂O：27g/L

Citric acid: 20g/L;

Sodium acetate: 20g/L;

Accelerant: 2g/L;

Stabilizer: 5 * 10 ^-2G/L;

Surface active agent: 10ml/L;

PH value 4.6～5.0;

85 ℃ of temperature.

The surface active agent that is added is mixed by non-ionic surfactant agent and cationic surfactant, has both made MoS in the plating bath ₂Particulate has well suspended property, makes MoS again ₂Particulate is positively charged, has promoted MoS ₂Codeposition takes place in shoe surface absorption with Ni-P in particle.The Ni-P-MoS that is obtained ₂MoS in the composite bed ₂Volume content reaches 5%～12%, and cover coat 400 has grey black metallic lustre.The utilization magnifying glass is observed coating and is found MoS ₂Particle distributes comparatively even in cover coat 400, the smooth and imporosity of coating.

(1) adopts Technology of Chemical Composite Plating, can obtain cover coat 400 (Ni-P-MoS in shoe surface ₂Composite deposite), MoS wherein ₂Content at 5-12vol%, cover coat 400 smooth densifications.

(2) cover coat 400 (Ni-P-MoS ₂Composite deposite) have excellent abrasive and antifriction quality, improved the friction and wear behavior of slide block greatly, good through client's using effect.

Claims

1. wear-resistant gear, said gear set inside hollow, said gear outer installment teeth is characterized in that, the compound cover coat of said teeth outer installment nickel phosphorus molybdenum disulfide.

2. gear according to claim 1 is characterized in that, the thickness of said cover coat is 5～7 μ m.

3. gear according to claim 2 is characterized in that, the thickness of said cover coat is 5 μ m.