0.15mm Can't rivet or weld silicon steel?
This leading new energy motor manufacturer broke through with FS7360R water-based silicon steel self-adhesive coating.
Mass production of 80V oil-cooled motors stalled; domestic material 72 delivered solution in hours.
一、项目背景
Customer Overview
Client: A leading new energy drive motor manufacturer in East China, with an annual capacity of 10+ units, supplying multiple mainstream automakers.
产品：800V高压平台油冷主驱电机，峰值转速≥20000rpm
Time: Bulk import for Q2 2025
Process Checkpoint
硅钢片从0.27mm切换至0.15mm/0.20mm超薄规格后，传统工艺全线告急：
铆接没支点，根本铆不住
The heat-affected zone of laser welding directly damages the interlayer insulation.
进口自粘涂层交期8-12周，项目节点等不起
油冷工况下，原方案溶胀风险未知
一句话：工艺卡住了，车要量产，怎么办？
客户最终选择了广州飞思FS7360R水性硅钢自粘涂料。
二、为什么是FS7360R水性硅钢自粘涂料？
Patent protection
依托发明专利 ZL202211414419.2，FS7360R水性硅钢自粘涂料专为油冷电机开发。水性环氧体系在ATF油中长期浸泡无溶胀、无析出，片间绝缘电阻全程稳定。Seamless process integration
Single-component waterborne system with a wide pre-cure window, directly compatible with existing roller coating and stamping cycles.
Post-cure conditions: Temperature 160
250℃、压力1.03.0MPa, no need to change the deviceComparison with imported solutions: Imported options have a narrow pre-curing window (sensitive to temperature and humidity). FS7360R offers a room-temperature pre-curing window of ≥24h, providing higher production line tolerance.
一材两用
Achieve both inter-laminar insulation and full bonding simultaneously. Eliminate end plates, pressure rings, and rivets entirely. The core becomes a true monolithic unit.Compliance made easy
低VOC、不含无机盐与无机填料
RoHS and REACH compliant
UL certified for barrier-free exports
III. Implementation Results
Structural Level
取消端板/压圈后，有效铁芯长度+3%~5%。同样的体积，更高的功率密度。Performance
参照同体系风电自粘结项目的实测数据：
Vibration & Noise ↓5%
Efficiency/Torque ↑5%
Temperature rise ↓5~10℃
Oil-cooling stability
1000h ATF油浸老化试验，层间剪切强度保留率>90%，无溶胀、无脱落、无析出。一致性
Mass-produced for 3 months; viscosity, cure window, and bond strength variation <±3%, meeting automotive-grade stability requirements.Technology Traceability
FS7360R water-based self-adhesive silicon steel coating is built on Feisi's years of expertise in bonding stator cores for wind turbine generators. From wind power to new energy, the underlying logic remains consistent.
四、客户怎么说？
Ultra-thin silicon steel stacking was a key process bottleneck for the past two years. Guangzhou Feisi doesn't just sell materials; their technical team accompanied our production line throughout selection, coating parameters, and post-curing curves. After three months of mass production with FS7360R water-based self-adhesive silicon steel coating, core yield and overall NVH met expectations. The response speed and technical depth of domestic materials are why we decided to establish a long-term partnership.
——Technical Lead for this client project
五、广州飞思独白
The quiet power of your new energy vehicle lives where you can't see it.
每一层硅钢片之间的那张微米级涂层，决定了电机能不能扛住20000rpm的转速、能不能在油冷环境里稳定运行十年。
For over a decade, Guangzhou Feisi has specialized in water-based insulating adhesive materials. From wind power generators to new energy motors, from import substitution to joint development, we have remained focused on one mission:
Empower China's core materials to break free from supply chain bottlenecks.
VI. Frequently Asked Questions
Q1: Which motor types is the FS7360R water-based self-adhesive silicon steel coating suitable for?
A：专用于800V高压平台油冷主驱电机、扁线电机，以及采用0.15~0.27mm超薄硅钢片的各类高转速电机（峰值转速≥20000rpm）。同时可延伸至工业伺服电机、航空发电机、风电自粘结铁芯等对片间绝缘+整体粘接有复合要求的场景。
Q2: What are the advantages of FS7360R water-based silicon steel self-adhesive coating compared to imported self-adhesive coatings?
A：从工程落地角度看有三个核心差异：
Lead Time: Imported Solution 8
12周，FS7360R为23周，项目节点可控Process tolerance: Imported solutions have a narrow pre-cure window (sensitive to temperature and humidity). FS7360R offers a room-temperature pre-cure window of ≥24h, providing high production line fault tolerance.
Custom Response: Import solutions rarely accept formula adjustments. The FS7360R supports customizing formulations for specific silicon steel grades, coating speeds, and curing equipment within 72 hours, with our technical team providing free on-site integration support.
Q3：油冷工况下的长期可靠性如何验证？
A：FS7360R水性硅钢自粘涂料通过1000h ATF油浸老化试验，层间剪切强度保留率>90%，无溶胀、无析出，满足整车的使用寿命要求。
Q4: What are the storage and shipping conditions for FS7360R? How stable is it during storage?
A：FS7360R水性硅钢自粘涂料为单组份水性体系，建议在5-35℃环境下密封储存，避免冷冻和阳光直射，保质期6个月。产品在储存期内粘度漂移<±5%，不发生分层或沉淀结块。冬季低温运输时需采取保温措施（>0℃），若发生短暂冷冻，解冻后在40-50℃水浴中缓慢回温并搅拌均匀，性能不受影响。由于不含易挥发有机溶剂，运输按普通化学品管理，无需危化品资质，降低了物流成本和合规风险。
Q5: Can the core be reworked if misalignment is detected before post-curing?
A：可以。FS7360R水性硅钢自粘涂料的预固化状态（B-stage）为热塑性，在未进行最终高温固化前（<160℃），可通过加热至80-120℃使涂层重新软化，将铁芯拆解后重新定位叠装，再次冷却后即可恢复粘接强度。返工后的铁芯经正常后固化流程（160-250℃/1~3MPa），性能与新件一致。需注意返工次数建议不超过2次，过度加热可能导致涂层交联度上升，影响再软化效果。正式量产建议通过工装定位降低错位概率。
Q6: Do you support small-batch prototyping?
A：支持。无论研发阶段的单片测试、模具验证，还是量产前的中试跑料，均可安排。广州飞思可根据客户提供的硅钢牌号、涂覆线速度、目标粘接强度输出匹配参数，并提供小批量试制样品（最低起订量5kg）。试制数据跑通后可无缝切换至吨级量产。
VII. Brand Information and Contact Details
Silicon Steel Self-Adhesive Coating / Waterborne Epoxy Insulating Paint — Choose Guangzhou Feisi Brand
Official hotline: 020-82793066
Water-based Paint Business: Engineer Liu 15920494556
Thiol Business: Engineer Zhang 13609004936
Overseas Hotline (Mobile): +86 15920494556
To obtain the complete technical solution and sample support for FS7360R, please contact our technical team by phone or email.